[issue #12081] module api upgrade junit4 to junit5 (#12082)

* refact(api): remove junit4 to junit5

* format with code style

api/src/test/java/com/alibaba/nacos/api/ability/ClientAbilitiesTest.java

@@ -20,25 +20,25 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ClientAbilitiesTest {
+class ClientAbilitiesTest {
     
     private static ObjectMapper mapper;
     
-    @BeforeClass
-    public static void setUp() throws Exception {
+    @BeforeAll
+    static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         ClientAbilities abilities = new ClientAbilities();
         String json = mapper.writeValueAsString(abilities);
         assertTrue(json.contains("\"remoteAbility\":{"));
@@ -47,7 +47,7 @@ public class ClientAbilitiesTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"remoteAbility\":{\"supportRemoteConnection\":false},"
                 + "\"configAbility\":{\"supportRemoteMetrics\":false},\"namingAbility\":{\"supportDeltaPush\":false,"
                 + "\"supportRemoteMetric\":false}}";

api/src/test/java/com/alibaba/nacos/api/ability/ServerAbilitiesTest.java

@@ -20,35 +20,35 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ServerAbilitiesTest {
+class ServerAbilitiesTest {
     
     private static ObjectMapper mapper;
     
     private ServerAbilities serverAbilities;
     
-    @BeforeClass
-    public static void setUpBeforeClass() throws Exception {
+    @BeforeAll
+    static void setUpBeforeClass() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         serverAbilities = new ServerAbilities();
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         serverAbilities = new ServerAbilities();
         String json = mapper.writeValueAsString(serverAbilities);
         assertTrue(json.contains("\"remoteAbility\":{"));
@@ -57,7 +57,7 @@ public class ServerAbilitiesTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"remoteAbility\":{\"supportRemoteConnection\":false},"
                 + "\"configAbility\":{\"supportRemoteMetrics\":false},\"namingAbility\":{\"supportDeltaPush\":false,"
                 + "\"supportRemoteMetric\":false}}";
@@ -68,10 +68,10 @@ public class ServerAbilitiesTest {
     }
     
     @Test
-    public void testEqualsAndHashCode() {
+    void testEqualsAndHashCode() {
         assertEquals(serverAbilities, serverAbilities);
         assertEquals(serverAbilities.hashCode(), serverAbilities.hashCode());
-        assertNotEquals(serverAbilities, null);
+        assertNotEquals(null, serverAbilities);
         assertNotEquals(serverAbilities, new ClientAbilities());
         ServerAbilities test = new ServerAbilities();
         assertEquals(serverAbilities, test);

api/src/test/java/com/alibaba/nacos/api/ability/register/impl/ClusterClientAbilitiesTest.java

@@ -16,14 +16,14 @@
 
 package com.alibaba.nacos.api.ability.register.impl;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ClusterClientAbilitiesTest {
+class ClusterClientAbilitiesTest {
     
     @Test
-    public void testGetStaticAbilities() {
+    void testGetStaticAbilities() {
         // TODO add the cluster client abilities.
         assertTrue(ClusterClientAbilities.getStaticAbilities().isEmpty());
     }

api/src/test/java/com/alibaba/nacos/api/ability/register/impl/SdkClientAbilitiesTest.java

@@ -16,14 +16,14 @@
 
 package com.alibaba.nacos.api.ability.register.impl;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class SdkClientAbilitiesTest {
+class SdkClientAbilitiesTest {
     
     @Test
-    public void testGetStaticAbilities() {
+    void testGetStaticAbilities() {
         // TODO add the sdk client abilities.
         assertTrue(SdkClientAbilities.getStaticAbilities().isEmpty());
     }

api/src/test/java/com/alibaba/nacos/api/ability/register/impl/ServerAbilitiesTest.java

@@ -17,20 +17,20 @@
 package com.alibaba.nacos.api.ability.register.impl;
 
 import com.alibaba.nacos.api.ability.constant.AbilityKey;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ServerAbilitiesTest {
+class ServerAbilitiesTest {
     
     @Test
-    public void testGetStaticAbilities() {
+    void testGetStaticAbilities() {
         assertFalse(ServerAbilities.getStaticAbilities().isEmpty());
     }
-
+    
     @Test
-    public void testSupportPersistentInstanceByGrpcAbilities() {
+    void testSupportPersistentInstanceByGrpcAbilities() {
         assertTrue(ServerAbilities.getStaticAbilities().get(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC));
     }
 }

api/src/test/java/com/alibaba/nacos/api/annotation/NacosPropertiesTest.java

@@ -16,8 +16,7 @@
 
 package com.alibaba.nacos.api.annotation;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 import org.springframework.mock.env.MockEnvironment;
 
 import static com.alibaba.nacos.api.annotation.NacosProperties.ACCESS_KEY_PLACEHOLDER;
@@ -28,23 +27,24 @@ import static com.alibaba.nacos.api.annotation.NacosProperties.ENDPOINT_PLACEHOL
 import static com.alibaba.nacos.api.annotation.NacosProperties.NAMESPACE_PLACEHOLDER;
 import static com.alibaba.nacos.api.annotation.NacosProperties.SECRET_KEY_PLACEHOLDER;
 import static com.alibaba.nacos.api.annotation.NacosProperties.SERVER_ADDR_PLACEHOLDER;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class NacosPropertiesTest {
+class NacosPropertiesTest {
     
     @Test
-    public void testPlaceholders() {
-        Assert.assertEquals("${nacos.endpoint:}", ENDPOINT_PLACEHOLDER);
-        Assert.assertEquals("${nacos.namespace:}", NAMESPACE_PLACEHOLDER);
-        Assert.assertEquals("${nacos.access-key:}", ACCESS_KEY_PLACEHOLDER);
-        Assert.assertEquals("${nacos.secret-key:}", SECRET_KEY_PLACEHOLDER);
-        Assert.assertEquals("${nacos.server-addr:}", SERVER_ADDR_PLACEHOLDER);
-        Assert.assertEquals("${nacos.context-path:}", CONTEXT_PATH_PLACEHOLDER);
-        Assert.assertEquals("${nacos.cluster-name:}", CLUSTER_NAME_PLACEHOLDER);
-        Assert.assertEquals("${nacos.encode:UTF-8}", ENCODE_PLACEHOLDER);
+    void testPlaceholders() {
+        assertEquals("${nacos.endpoint:}", ENDPOINT_PLACEHOLDER);
+        assertEquals("${nacos.namespace:}", NAMESPACE_PLACEHOLDER);
+        assertEquals("${nacos.access-key:}", ACCESS_KEY_PLACEHOLDER);
+        assertEquals("${nacos.secret-key:}", SECRET_KEY_PLACEHOLDER);
+        assertEquals("${nacos.server-addr:}", SERVER_ADDR_PLACEHOLDER);
+        assertEquals("${nacos.context-path:}", CONTEXT_PATH_PLACEHOLDER);
+        assertEquals("${nacos.cluster-name:}", CLUSTER_NAME_PLACEHOLDER);
+        assertEquals("${nacos.encode:UTF-8}", ENCODE_PLACEHOLDER);
     }
     
     @Test
-    public void testResolvePlaceholders() {
+    void testResolvePlaceholders() {
         testResolvePlaceholder(ENDPOINT_PLACEHOLDER, "nacos.endpoint", "test-value", "test-value");
         testResolvePlaceholder(ENDPOINT_PLACEHOLDER, "", "test-value", "");
         
@@ -75,11 +75,11 @@ public class NacosPropertiesTest {
         MockEnvironment environment = new MockEnvironment();
         environment.setProperty(propertyName, propertyValue);
         String resolvedValue = environment.resolvePlaceholders(placeholder);
-        Assert.assertEquals(expectValue, resolvedValue);
+        assertEquals(expectValue, resolvedValue);
     }
     
     @Test
-    public void testSort() {
+    void testSort() {
     
     }
 }

api/src/test/java/com/alibaba/nacos/api/cmdb/pojo/EntityEventTest.java

@@ -20,24 +20,24 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class EntityEventTest {
+class EntityEventTest {
     
     ObjectMapper mapper = new ObjectMapper();
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerialization() throws JsonProcessingException {
+    void testSerialization() throws JsonProcessingException {
         EntityEvent entity = new EntityEvent();
         entity.setEntityName("test-entity");
         entity.setEntityType("CMDB");
@@ -50,7 +50,7 @@ public class EntityEventTest {
     }
     
     @Test
-    public void testDeserialization() throws JsonProcessingException {
+    void testDeserialization() throws JsonProcessingException {
         String json = "{\"type\":\"ENTITY_REMOVE\",\"entityName\":\"test-entity\",\"entityType\":\"CMDB\"}";
         EntityEvent entity = mapper.readValue(json, EntityEvent.class);
         assertEquals("test-entity", entity.getEntityName());

api/src/test/java/com/alibaba/nacos/api/cmdb/pojo/EntityTest.java

@@ -20,26 +20,26 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class EntityTest {
+class EntityTest {
     
     ObjectMapper mapper = new ObjectMapper();
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerialization() throws JsonProcessingException {
+    void testSerialization() throws JsonProcessingException {
         Entity entity = new Entity();
         entity.setName("test-entity");
         entity.setType(PreservedEntityTypes.ip.name());
@@ -51,7 +51,7 @@ public class EntityTest {
     }
     
     @Test
-    public void testDeserialization() throws JsonProcessingException {
+    void testDeserialization() throws JsonProcessingException {
         String json = "{\"type\":\"service\",\"name\":\"test-entity\",\"labels\":{\"test-label-key\":\"test-label-value\"}}";
         Entity entity = mapper.readValue(json, Entity.class);
         assertEquals("test-entity", entity.getName());

api/src/test/java/com/alibaba/nacos/api/cmdb/pojo/LabelTest.java

@@ -20,26 +20,26 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class LabelTest {
+class LabelTest {
     
     ObjectMapper mapper = new ObjectMapper();
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerialization() throws JsonProcessingException {
+    void testSerialization() throws JsonProcessingException {
         Label label = new Label();
         label.setName("test-label");
         label.setDescription("CMDB description");
@@ -52,7 +52,7 @@ public class LabelTest {
     }
     
     @Test
-    public void testDeserialization() throws JsonProcessingException {
+    void testDeserialization() throws JsonProcessingException {
         String json = "{\"values\":[\"test-value\"],\"name\":\"test-label\",\"description\":\"CMDB description\"}";
         Label label = mapper.readValue(json, Label.class);
         assertEquals("test-label", label.getName());

api/src/test/java/com/alibaba/nacos/api/config/ConfigChangeEventTest.java

@@ -16,18 +16,18 @@
 
 package com.alibaba.nacos.api.config;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.HashMap;
 import java.util.Map;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
-public class ConfigChangeEventTest {
+class ConfigChangeEventTest {
     
     @Test
-    public void testConstructor() {
+    void testConstructor() {
         Map<String, ConfigChangeItem> mockData = new HashMap<>();
         mockData.put("test", new ConfigChangeItem("testKey", null, "testValue"));
         ConfigChangeEvent event = new ConfigChangeEvent(mockData);

api/src/test/java/com/alibaba/nacos/api/config/ConfigChangeItemTest.java

@@ -16,15 +16,15 @@
 
 package com.alibaba.nacos.api.config;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
-public class ConfigChangeItemTest {
+class ConfigChangeItemTest {
     
     @Test
-    public void testSetNewValue() {
+    void testSetNewValue() {
         ConfigChangeItem item = new ConfigChangeItem("testKey", null, "testValue");
         item.setType(PropertyChangeType.ADDED);
         assertEquals("testKey", item.getKey());
@@ -46,7 +46,7 @@ public class ConfigChangeItemTest {
     }
     
     @Test
-    public void testToString() {
+    void testToString() {
         ConfigChangeItem item = new ConfigChangeItem("testKey", null, "testValue");
         item.setType(PropertyChangeType.ADDED);
         assertEquals("ConfigChangeItem{key='testKey', oldValue='null', newValue='testValue', type=ADDED}",

api/src/test/java/com/alibaba/nacos/api/config/ConfigTypeTest.java

@@ -16,16 +16,16 @@
 
 package com.alibaba.nacos.api.config;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ConfigTypeTest {
+class ConfigTypeTest {
     
     @Test
-    public void isValidType() {
+    void isValidType() {
         assertTrue(ConfigType.isValidType("xml"));
         assertTrue(ConfigType.isValidType("properties"));
         assertTrue(ConfigType.isValidType("json"));
@@ -38,7 +38,7 @@ public class ConfigTypeTest {
     }
     
     @Test
-    public void testGetDefaultType() {
+    void testGetDefaultType() {
         assertEquals("text", ConfigType.getDefaultType().getType());
     }
 }

api/src/test/java/com/alibaba/nacos/api/config/ability/ClientRemoteAbilityTest.java

@@ -21,32 +21,32 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ClientRemoteAbilityTest {
+class ClientRemoteAbilityTest {
     
     private static ObjectMapper mapper;
     
-    @BeforeClass
-    public static void setUp() throws Exception {
+    @BeforeAll
+    static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         ClientRemoteAbility abilities = new ClientRemoteAbility();
         String json = mapper.writeValueAsString(abilities);
         assertEquals("{\"supportRemoteConnection\":false}", json);
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"supportRemoteConnection\":true}";
         ClientRemoteAbility abilities = mapper.readValue(json, ClientRemoteAbility.class);
         assertTrue(abilities.isSupportRemoteConnection());

api/src/test/java/com/alibaba/nacos/api/config/ability/ServerConfigAbilityTest.java

@@ -16,21 +16,20 @@
 
 package com.alibaba.nacos.api.config.ability;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
 
-public class ServerConfigAbilityTest {
+class ServerConfigAbilityTest {
     
     @Test
-    public void testEquals() {
+    void testEquals() {
         ServerConfigAbility ability = new ServerConfigAbility();
         ability.setSupportRemoteMetrics(true);
         assertEquals(ability, ability);
-        assertFalse(ability.equals(null));
-        assertFalse(ability.equals(new ClientConfigAbility()));
+        assertNotEquals(null, ability);
+        assertNotEquals(ability, new ClientConfigAbility());
         ServerConfigAbility newOne = new ServerConfigAbility();
         assertNotEquals(ability, newOne);
         newOne.setSupportRemoteMetrics(true);

api/src/test/java/com/alibaba/nacos/api/config/ability/ServerRemoteAbilityTest.java

@@ -23,35 +23,35 @@ import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.MapperFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ServerRemoteAbilityTest {
+class ServerRemoteAbilityTest {
     
     private static ObjectMapper mapper;
     
     private ServerRemoteAbility serverAbilities;
     
-    @BeforeClass
-    public static void setUpBeforeClass() throws Exception {
+    @BeforeAll
+    static void setUpBeforeClass() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
         mapper.enable(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY);
     }
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         serverAbilities = new ServerRemoteAbility();
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         serverAbilities = new ServerRemoteAbility();
         String json = mapper.writeValueAsString(serverAbilities);
         assertTrue(json.contains("\"supportRemoteConnection\":false"));
@@ -59,7 +59,7 @@ public class ServerRemoteAbilityTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"supportRemoteConnection\":true,\"grpcReportEnabled\":true}";
         ServerRemoteAbility abilities = mapper.readValue(json, ServerRemoteAbility.class);
         assertTrue(abilities.isSupportRemoteConnection());
@@ -67,10 +67,10 @@ public class ServerRemoteAbilityTest {
     }
     
     @Test
-    public void testEqualsAndHashCode() {
+    void testEqualsAndHashCode() {
         assertEquals(serverAbilities, serverAbilities);
         assertEquals(serverAbilities.hashCode(), serverAbilities.hashCode());
-        assertNotEquals(serverAbilities, null);
+        assertNotEquals(null, serverAbilities);
         assertNotEquals(serverAbilities, new ClientAbilities());
         ServerRemoteAbility test = new ServerRemoteAbility();
         assertEquals(serverAbilities, test);

api/src/test/java/com/alibaba/nacos/api/config/listener/AbstractListenerTest.java

@@ -16,14 +16,14 @@
 
 package com.alibaba.nacos.api.config.listener;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
-public class AbstractListenerTest {
+class AbstractListenerTest {
     
     @Test
-    public void testGetExecutor() {
+    void testGetExecutor() {
         // Default listener executor is null.
         assertNull(new AbstractListener() {
             @Override

api/src/test/java/com/alibaba/nacos/api/config/listener/AbstractSharedListenerTest.java

@@ -16,28 +16,28 @@
 
 package com.alibaba.nacos.api.config.listener;
 
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.util.HashMap;
 import java.util.Map;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
-public class AbstractSharedListenerTest {
+class AbstractSharedListenerTest {
     
     private static final String CONFIG_CONTENT = "test";
     
     private static Map<String, String> receivedMap;
     
-    @Before
-    public void setUp() {
+    @BeforeEach
+    void setUp() {
         receivedMap = new HashMap<>();
     }
     
     @Test
-    public void testFillContext() {
+    void testFillContext() {
         assertEquals(0, receivedMap.size());
         MockShardListener listener = new MockShardListener();
         listener.receiveConfigInfo(CONFIG_CONTENT);
@@ -52,7 +52,7 @@ public class AbstractSharedListenerTest {
     }
     
     @Test
-    public void getExecutor() {
+    void getExecutor() {
         // Default listener executor is null.
         assertNull(new MockShardListener().getExecutor());
     }

api/src/test/java/com/alibaba/nacos/api/config/remote/request/BasedConfigRequestTest.java

@@ -22,7 +22,7 @@ import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.MapperFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
+import org.junit.jupiter.api.BeforeAll;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -30,8 +30,6 @@ import java.util.UUID;
 
 public abstract class BasedConfigRequestTest {
     
-    protected static ObjectMapper mapper;
-    
     protected static final String DATA_ID = "test_data";
     
     protected static final String GROUP = "group";
@@ -52,11 +50,13 @@ public abstract class BasedConfigRequestTest {
     
     protected static final String CONTENT = "content";
     
+    protected static ObjectMapper mapper;
+    
     static {
         HEADERS.put(HEADER_KEY, HEADER_VALUE);
     }
     
-    @BeforeClass
+    @BeforeAll
     public static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);

api/src/test/java/com/alibaba/nacos/api/config/remote/request/ClientConfigMetricRequestTest.java

@@ -18,18 +18,17 @@ package com.alibaba.nacos.api.config.remote.request;
 
 import com.alibaba.nacos.api.common.Constants;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.Objects;
 
 import static com.alibaba.nacos.api.config.remote.request.ClientConfigMetricRequest.MetricsKey.CACHE_DATA;
 import static com.alibaba.nacos.api.config.remote.request.ClientConfigMetricRequest.MetricsKey.SNAPSHOT_DATA;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ClientConfigMetricRequestTest extends BasedConfigRequestTest {
+class ClientConfigMetricRequestTest extends BasedConfigRequestTest {
     
     @Override
     @Test
@@ -57,35 +56,36 @@ public class ClientConfigMetricRequestTest extends BasedConfigRequestTest {
                         + "\"test_data+group+test_tenant\"},{\"type\":\"snapshotData\","
                         + "\"key\":\"test_data+group+test_tenant\"}],\"module\":\"config\"}";
         ClientConfigMetricRequest actual = mapper.readValue(json, ClientConfigMetricRequest.class);
-        assertEquals(actual.getMetricsKeys().size(), 2);
-        assertEquals(actual.getModule(), Constants.Config.CONFIG_MODULE);
-        assertEquals(actual.getHeader(HEADER_KEY), HEADER_VALUE);
+        assertEquals(2, actual.getMetricsKeys().size());
+        assertEquals(Constants.Config.CONFIG_MODULE, actual.getModule());
+        assertEquals(HEADER_VALUE, actual.getHeader(HEADER_KEY));
     }
     
     @Test
-    public void testMetricsKeysEquals() {
+    void testMetricsKeysEquals() {
         String dataKey = String.join("+", KEY);
         ClientConfigMetricRequest.MetricsKey key = ClientConfigMetricRequest.MetricsKey.build(CACHE_DATA, dataKey);
         assertEquals(key, key);
-        assertFalse(key.equals(null));
-        assertFalse(key.equals(new ClientConfigMetricRequest()));
-        ClientConfigMetricRequest.MetricsKey newOne = ClientConfigMetricRequest.MetricsKey
-                .build(SNAPSHOT_DATA, dataKey);
+        assertNotEquals(null, key);
+        assertNotEquals(key, new ClientConfigMetricRequest());
+        ClientConfigMetricRequest.MetricsKey newOne = ClientConfigMetricRequest.MetricsKey.build(SNAPSHOT_DATA,
+                dataKey);
         assertNotEquals(key, newOne);
         newOne.setType(CACHE_DATA);
         assertEquals(key, newOne);
     }
     
     @Test
-    public void testMetricsHashCode() {
+    void testMetricsHashCode() {
         String dataKey = String.join("+", KEY);
         ClientConfigMetricRequest.MetricsKey key = ClientConfigMetricRequest.MetricsKey.build(CACHE_DATA, dataKey);
         assertEquals(Objects.hash(CACHE_DATA, dataKey), key.hashCode());
     }
     
     @Test
-    public void testMetricsToString() {
-        ClientConfigMetricRequest.MetricsKey key = ClientConfigMetricRequest.MetricsKey.build(CACHE_DATA,  String.join("+", KEY));
+    void testMetricsToString() {
+        ClientConfigMetricRequest.MetricsKey key = ClientConfigMetricRequest.MetricsKey.build(CACHE_DATA,
+                String.join("+", KEY));
         assertEquals("MetricsKey{type='cacheData', key='test_data+group+test_tenant'}", key.toString());
     }
 }

api/src/test/java/com/alibaba/nacos/api/config/remote/request/ConfigBatchListenRequestTest.java

@@ -18,12 +18,12 @@ package com.alibaba.nacos.api.config.remote.request;
 
 import com.alibaba.nacos.api.common.Constants;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ConfigBatchListenRequestTest extends BasedConfigRequestTest {
+class ConfigBatchListenRequestTest extends BasedConfigRequestTest {
     
     @Override
     @Test
@@ -47,14 +47,14 @@ public class ConfigBatchListenRequestTest extends BasedConfigRequestTest {
                 + "\"configListenContexts\":[{\"group\":\"group\",\"md5\":\"test_MD5\","
                 + "\"dataId\":\"test_data\",\"tenant\":\"test_tenant\"}],\"module\":\"config\"}";
         ConfigBatchListenRequest actual = mapper.readValue(json, ConfigBatchListenRequest.class);
-        assertEquals(actual.isListen(), true);
-        assertEquals(actual.getModule(), Constants.Config.CONFIG_MODULE);
-        assertEquals(actual.getHeader(HEADER_KEY), HEADER_VALUE);
-        assertEquals(actual.getConfigListenContexts().size(), 1);
+        assertEquals(true, actual.isListen());
+        assertEquals(Constants.Config.CONFIG_MODULE, actual.getModule());
+        assertEquals(HEADER_VALUE, actual.getHeader(HEADER_KEY));
+        assertEquals(1, actual.getConfigListenContexts().size());
     }
     
     @Test
-    public void testConfigListenContextToString() {
+    void testConfigListenContextToString() {
         ConfigBatchListenRequest configBatchListenRequest = new ConfigBatchListenRequest();
         configBatchListenRequest.addConfigListenContext(GROUP, DATA_ID, TENANT, MD5);
         assertEquals("ConfigListenContext{group='group', md5='test_MD5', dataId='test_data', tenant='test_tenant'}",

api/src/test/java/com/alibaba/nacos/api/config/remote/request/ConfigChangeNotifyRequestTest.java

@@ -18,20 +18,20 @@ package com.alibaba.nacos.api.config.remote.request;
 
 import com.alibaba.nacos.api.common.Constants;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ConfigChangeNotifyRequestTest extends BasedConfigRequestTest {
+class ConfigChangeNotifyRequestTest extends BasedConfigRequestTest {
     
     ConfigChangeNotifyRequest configChangeNotifyRequest;
     
     String requestId;
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         configChangeNotifyRequest = ConfigChangeNotifyRequest.build(DATA_ID, GROUP, TENANT);
         configChangeNotifyRequest.putAllHeader(HEADERS);
         requestId = injectRequestUuId(configChangeNotifyRequest);
@@ -54,10 +54,10 @@ public class ConfigChangeNotifyRequestTest extends BasedConfigRequestTest {
         String json = "{\"headers\":{\"header1\":\"test_header1\"},\"dataId\":\"test_data\",\"group\":"
                 + "\"group\",\"tenant\":\"test_tenant\",\"module\":\"config\"}";
         ConfigChangeNotifyRequest actual = mapper.readValue(json, ConfigChangeNotifyRequest.class);
-        assertEquals(actual.getDataId(), DATA_ID);
-        assertEquals(actual.getGroup(), GROUP);
-        assertEquals(actual.getTenant(), TENANT);
-        assertEquals(actual.getModule(), Constants.Config.CONFIG_MODULE);
-        assertEquals(actual.getHeader(HEADER_KEY), HEADER_VALUE);
+        assertEquals(DATA_ID, actual.getDataId());
+        assertEquals(GROUP, actual.getGroup());
+        assertEquals(TENANT, actual.getTenant());
+        assertEquals(Constants.Config.CONFIG_MODULE, actual.getModule());
+        assertEquals(HEADER_VALUE, actual.getHeader(HEADER_KEY));
     }
 }

api/src/test/java/com/alibaba/nacos/api/config/remote/request/ConfigPublishRequestTest.java

@@ -18,24 +18,24 @@ package com.alibaba.nacos.api.config.remote.request;
 
 import com.alibaba.nacos.api.common.Constants;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ConfigPublishRequestTest extends BasedConfigRequestTest {
-    
-    ConfigPublishRequest configPublishRequest;
+class ConfigPublishRequestTest extends BasedConfigRequestTest {
     
     private static final String TAG_PARAM = "tag";
     
     private static final String APP_NAME_PARAM = "appName";
     
+    ConfigPublishRequest configPublishRequest;
+    
     String requestId;
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         configPublishRequest = new ConfigPublishRequest(DATA_ID, GROUP, TENANT, CONTENT);
         configPublishRequest.putAdditionalParam(TAG_PARAM, TAG_PARAM);
         configPublishRequest.putAdditionalParam(APP_NAME_PARAM, APP_NAME_PARAM);
@@ -64,13 +64,13 @@ public class ConfigPublishRequestTest extends BasedConfigRequestTest {
                 + "\"tenant\":\"test_tenant\",\"content\":\"content\",\"casMd5\":\"test_MD5\","
                 + "\"additionMap\":{\"appName\":\"appName\",\"tag\":\"tag\"},\"module\":\"config\"}";
         ConfigPublishRequest actual = mapper.readValue(json, ConfigPublishRequest.class);
-        assertEquals(actual.getDataId(), DATA_ID);
-        assertEquals(actual.getGroup(), GROUP);
-        assertEquals(actual.getTenant(), TENANT);
-        assertEquals(actual.getModule(), Constants.Config.CONFIG_MODULE);
-        assertEquals(actual.getContent(), CONTENT);
-        assertEquals(actual.getCasMd5(), MD5);
-        assertEquals(actual.getAdditionParam(TAG_PARAM), TAG_PARAM);
-        assertEquals(actual.getAdditionParam(APP_NAME_PARAM), APP_NAME_PARAM);
+        assertEquals(DATA_ID, actual.getDataId());
+        assertEquals(GROUP, actual.getGroup());
+        assertEquals(TENANT, actual.getTenant());
+        assertEquals(Constants.Config.CONFIG_MODULE, actual.getModule());
+        assertEquals(CONTENT, actual.getContent());
+        assertEquals(MD5, actual.getCasMd5());
+        assertEquals(TAG_PARAM, actual.getAdditionParam(TAG_PARAM));
+        assertEquals(APP_NAME_PARAM, actual.getAdditionParam(APP_NAME_PARAM));
     }
 }

api/src/test/java/com/alibaba/nacos/api/config/remote/request/ConfigQueryRequestTest.java

@@ -18,16 +18,16 @@ package com.alibaba.nacos.api.config.remote.request;
 
 import com.alibaba.nacos.api.common.Constants;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.util.HashMap;
 import java.util.Map;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ConfigQueryRequestTest extends BasedConfigRequestTest {
+class ConfigQueryRequestTest extends BasedConfigRequestTest {
     
     ConfigQueryRequest configQueryRequest;
     
@@ -35,8 +35,8 @@ public class ConfigQueryRequestTest extends BasedConfigRequestTest {
     
     String requestId;
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         headers.put(Constants.Config.NOTIFY_HEADER, Boolean.TRUE.toString());
         configQueryRequest = ConfigQueryRequest.build(DATA_ID, GROUP, TENANT);
         configQueryRequest.putAllHeader(headers);
@@ -45,7 +45,7 @@ public class ConfigQueryRequestTest extends BasedConfigRequestTest {
     }
     
     @Test
-    public void testIsNotify() {
+    void testIsNotify() {
         assertTrue(configQueryRequest.isNotify());
     }
     
@@ -67,10 +67,10 @@ public class ConfigQueryRequestTest extends BasedConfigRequestTest {
         String json = "{\"headers\":{\"notify\":\"true\"},\"dataId\":\"test_data\",\"group\":\"group\","
                 + "\"tenant\":\"test_tenant\",\"notify\":true,\"module\":\"config\",\"tag\":\"tag\"}";
         ConfigQueryRequest actual = mapper.readValue(json, ConfigQueryRequest.class);
-        assertEquals(actual.getDataId(), DATA_ID);
-        assertEquals(actual.getGroup(), GROUP);
-        assertEquals(actual.getTenant(), TENANT);
-        assertEquals(actual.getTag(), TAG);
-        assertEquals(actual.getModule(), Constants.Config.CONFIG_MODULE);
+        assertEquals(DATA_ID, actual.getDataId());
+        assertEquals(GROUP, actual.getGroup());
+        assertEquals(TENANT, actual.getTenant());
+        assertEquals(TAG, actual.getTag());
+        assertEquals(Constants.Config.CONFIG_MODULE, actual.getModule());
     }
 }

api/src/test/java/com/alibaba/nacos/api/config/remote/request/ConfigRemoveRequestTest.java

@@ -18,20 +18,20 @@ package com.alibaba.nacos.api.config.remote.request;
 
 import com.alibaba.nacos.api.common.Constants;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ConfigRemoveRequestTest extends BasedConfigRequestTest {
+class ConfigRemoveRequestTest extends BasedConfigRequestTest {
     
     ConfigRemoveRequest configRemoveRequest;
     
     String requestId;
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         configRemoveRequest = new ConfigRemoveRequest(DATA_ID, GROUP, TENANT, TAG);
         requestId = injectRequestUuId(configRemoveRequest);
         
@@ -56,10 +56,10 @@ public class ConfigRemoveRequestTest extends BasedConfigRequestTest {
         String json = "{\"headers\":{},\"dataId\":\"test_data\",\"group\":\"group\",\"tenant\":\"test_tenant\""
                 + ",\"tag\":\"tag\",\"module\":\"config\"}";
         ConfigRemoveRequest actual = mapper.readValue(json, ConfigRemoveRequest.class);
-        assertEquals(actual.getDataId(), DATA_ID);
-        assertEquals(actual.getGroup(), GROUP);
-        assertEquals(actual.getTenant(), TENANT);
-        assertEquals(actual.getModule(), Constants.Config.CONFIG_MODULE);
-        assertEquals(actual.getTag(), TAG);
+        assertEquals(DATA_ID, actual.getDataId());
+        assertEquals(GROUP, actual.getGroup());
+        assertEquals(TENANT, actual.getTenant());
+        assertEquals(Constants.Config.CONFIG_MODULE, actual.getModule());
+        assertEquals(TAG, actual.getTag());
     }
 }

api/src/test/java/com/alibaba/nacos/api/config/remote/request/cluster/ConfigChangeClusterSyncRequestTest.java

@@ -19,20 +19,20 @@ package com.alibaba.nacos.api.config.remote.request.cluster;
 import com.alibaba.nacos.api.common.Constants;
 import com.alibaba.nacos.api.config.remote.request.BasedConfigRequestTest;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ConfigChangeClusterSyncRequestTest extends BasedConfigRequestTest {
+class ConfigChangeClusterSyncRequestTest extends BasedConfigRequestTest {
     
     ConfigChangeClusterSyncRequest configChangeClusterSyncRequest;
     
     String requestId;
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         configChangeClusterSyncRequest = new ConfigChangeClusterSyncRequest();
         configChangeClusterSyncRequest.setDataId(DATA_ID);
         configChangeClusterSyncRequest.setGroup(GROUP);
@@ -64,15 +64,16 @@ public class ConfigChangeClusterSyncRequestTest extends BasedConfigRequestTest {
     @Override
     @Test
     public void testDeserialize() throws JsonProcessingException {
-        String json = "{\"headers\":{\"header1\":\"test_header1\"},\"requestId\":\"ece89111-3c42-4055-aca4-c95e16ec564b\",\"dataId\":\"test_data\","
-                + "\"group\":\"group\",\"tenant\":\"test_tenant\","
-                + "\"tag\":\"tag\",\"lastModified\":0,\"beta\":true,\"module\":\"config\"}";
+        String json =
+                "{\"headers\":{\"header1\":\"test_header1\"},\"requestId\":\"ece89111-3c42-4055-aca4-c95e16ec564b\",\"dataId\":\"test_data\","
+                        + "\"group\":\"group\",\"tenant\":\"test_tenant\","
+                        + "\"tag\":\"tag\",\"lastModified\":0,\"beta\":true,\"module\":\"config\"}";
         ConfigChangeClusterSyncRequest actual = mapper.readValue(json, ConfigChangeClusterSyncRequest.class);
-        assertEquals(actual.getDataId(), DATA_ID);
-        assertEquals(actual.getGroup(), GROUP);
-        assertEquals(actual.getTenant(), TENANT);
-        assertEquals(actual.getModule(), Constants.Config.CONFIG_MODULE);
-        assertEquals(actual.getLastModified(), 0L);
+        assertEquals(DATA_ID, actual.getDataId());
+        assertEquals(GROUP, actual.getGroup());
+        assertEquals(TENANT, actual.getTenant());
+        assertEquals(Constants.Config.CONFIG_MODULE, actual.getModule());
+        assertEquals(0L, actual.getLastModified());
         assertTrue(actual.isBeta());
     }
 }

api/src/test/java/com/alibaba/nacos/api/config/remote/response/ClientConfigMetricResponseTest.java

@@ -18,14 +18,14 @@ package com.alibaba.nacos.api.config.remote.response;
 
 import com.alibaba.nacos.api.remote.response.ResponseCode;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.util.HashMap;
 import java.util.Map;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class ClientConfigMetricResponseTest extends BasedConfigResponseTest {
     
@@ -33,8 +33,8 @@ public class ClientConfigMetricResponseTest extends BasedConfigResponseTest {
     
     Map<String, Object> metric = new HashMap<>(16);
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         metric.put("m1", "v1");
         clientConfigMetricResponse = new ClientConfigMetricResponse();
         clientConfigMetricResponse.setMetrics(metric);

api/src/test/java/com/alibaba/nacos/api/config/remote/response/ConfigChangeBatchListenResponseTest.java

@@ -18,18 +18,18 @@ package com.alibaba.nacos.api.config.remote.response;
 
 import com.alibaba.nacos.api.remote.response.ResponseCode;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ConfigChangeBatchListenResponseTest extends BasedConfigResponseTest {
+class ConfigChangeBatchListenResponseTest extends BasedConfigResponseTest {
     
     ConfigChangeBatchListenResponse configChangeBatchListenResponse;
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         configChangeBatchListenResponse = new ConfigChangeBatchListenResponse();
         requestId = injectResponseUuId(configChangeBatchListenResponse);
         configChangeBatchListenResponse.addChangeConfig(DATA_ID, GROUP, TENANT);
@@ -50,8 +50,8 @@ public class ConfigChangeBatchListenResponseTest extends BasedConfigResponseTest
     @Override
     @Test
     public void testSerializeFailResponse() throws JsonProcessingException {
-        ConfigChangeBatchListenResponse configChangeBatchListenResponse = ConfigChangeBatchListenResponse
-                .buildFailResponse("Fail");
+        ConfigChangeBatchListenResponse configChangeBatchListenResponse = ConfigChangeBatchListenResponse.buildFailResponse(
+                "Fail");
         String json = mapper.writeValueAsString(configChangeBatchListenResponse);
         assertTrue(json.contains("\"resultCode\":" + ResponseCode.FAIL.getCode()));
         assertTrue(json.contains("\"errorCode\":0"));

api/src/test/java/com/alibaba/nacos/api/config/remote/response/ConfigChangeNotifyResponseTest.java

@@ -18,17 +18,17 @@ package com.alibaba.nacos.api.config.remote.response;
 
 import com.alibaba.nacos.api.remote.response.ResponseCode;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class ConfigChangeNotifyResponseTest extends BasedConfigResponseTest {
     
     ConfigChangeNotifyResponse configChangeNotifyResponse;
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         configChangeNotifyResponse = new ConfigChangeNotifyResponse();
         requestId = injectResponseUuId(configChangeNotifyResponse);
     }
@@ -41,7 +41,7 @@ public class ConfigChangeNotifyResponseTest extends BasedConfigResponseTest {
         assertTrue(json.contains("\"requestId\":\"" + requestId));
         assertTrue(json.contains("\"resultCode\":" + ResponseCode.SUCCESS.getCode()));
         assertTrue(json.contains("\"errorCode\":0"));
-    
+        
     }
     
     @Override

api/src/test/java/com/alibaba/nacos/api/config/remote/response/ConfigPublishResponseTest.java

@@ -18,17 +18,17 @@ package com.alibaba.nacos.api.config.remote.response;
 
 import com.alibaba.nacos.api.remote.response.ResponseCode;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ConfigPublishResponseTest extends BasedConfigResponseTest {
+class ConfigPublishResponseTest extends BasedConfigResponseTest {
     
     ConfigPublishResponse configPublishResponse;
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         configPublishResponse = ConfigPublishResponse.buildSuccessResponse();
         requestId = injectResponseUuId(configPublishResponse);
     }

api/src/test/java/com/alibaba/nacos/api/config/remote/response/ConfigQueryResponseTest.java

@@ -18,18 +18,18 @@ package com.alibaba.nacos.api.config.remote.response;
 
 import com.alibaba.nacos.api.remote.response.ResponseCode;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ConfigQueryResponseTest extends BasedConfigResponseTest {
+class ConfigQueryResponseTest extends BasedConfigResponseTest {
     
     ConfigQueryResponse configQueryResponse;
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         configQueryResponse = ConfigQueryResponse.buildSuccessResponse("success");
         configQueryResponse.setContentType("text");
         configQueryResponse.setEncryptedDataKey("encryptedKey");

api/src/test/java/com/alibaba/nacos/api/config/remote/response/ConfigRemoveResponseTest.java

@@ -18,17 +18,17 @@ package com.alibaba.nacos.api.config.remote.response;
 
 import com.alibaba.nacos.api.remote.response.ResponseCode;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ConfigRemoveResponseTest extends BasedConfigResponseTest {
+class ConfigRemoveResponseTest extends BasedConfigResponseTest {
     
     ConfigRemoveResponse configRemoveResponse;
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         configRemoveResponse = ConfigRemoveResponse.buildSuccessResponse();
         requestId = injectResponseUuId(configRemoveResponse);
     }

api/src/test/java/com/alibaba/nacos/api/config/remote/response/cluster/ConfigChangeClusterSyncResponseTest.java

@@ -19,17 +19,17 @@ package com.alibaba.nacos.api.config.remote.response.cluster;
 import com.alibaba.nacos.api.config.remote.response.BasedConfigResponseTest;
 import com.alibaba.nacos.api.remote.response.ResponseCode;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class ConfigChangeClusterSyncResponseTest extends BasedConfigResponseTest {
     
     ConfigChangeClusterSyncResponse configChangeClusterSyncResponse;
     
-    @Before
-    public void before() {
+    @BeforeEach
+    void before() {
         configChangeClusterSyncResponse = new ConfigChangeClusterSyncResponse();
         requestId = injectResponseUuId(configChangeClusterSyncResponse);
     }

api/src/test/java/com/alibaba/nacos/api/exception/NacosExceptionTest.java

@@ -17,14 +17,14 @@
 package com.alibaba.nacos.api.exception;
 
 import com.alibaba.nacos.api.common.Constants;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class NacosExceptionTest {
+class NacosExceptionTest {
     
     @Test
-    public void testEmptyConstructor() {
+    void testEmptyConstructor() {
         NacosException exception = new NacosException();
         assertEquals(0, exception.getErrCode());
         assertEquals(Constants.NULL, exception.getErrMsg());
@@ -35,7 +35,7 @@ public class NacosExceptionTest {
     }
     
     @Test
-    public void testConstructorWithErrMsg() {
+    void testConstructorWithErrMsg() {
         NacosException exception = new NacosException(NacosException.SERVER_ERROR, "test");
         assertEquals(NacosException.SERVER_ERROR, exception.getErrCode());
         assertEquals("test", exception.getErrMsg());
@@ -43,7 +43,7 @@ public class NacosExceptionTest {
     }
     
     @Test
-    public void testConstructorWithCause() {
+    void testConstructorWithCause() {
         NacosException exception = new NacosException(NacosException.SERVER_ERROR, new RuntimeException("cause test"));
         assertEquals(NacosException.SERVER_ERROR, exception.getErrCode());
         assertEquals("cause test", exception.getErrMsg());
@@ -51,7 +51,7 @@ public class NacosExceptionTest {
     }
     
     @Test
-    public void testConstructorWithMultiCauses() {
+    void testConstructorWithMultiCauses() {
         NacosException exception = new NacosException(NacosException.SERVER_ERROR,
                 new RuntimeException("cause test", new RuntimeException("multi")));
         assertEquals(NacosException.SERVER_ERROR, exception.getErrCode());
@@ -60,7 +60,7 @@ public class NacosExceptionTest {
     }
     
     @Test
-    public void testConstructorWithFull() {
+    void testConstructorWithFull() {
         NacosException exception = new NacosException(NacosException.SERVER_ERROR, "test",
                 new RuntimeException("cause test"));
         assertEquals(NacosException.SERVER_ERROR, exception.getErrCode());

api/src/test/java/com/alibaba/nacos/api/exception/api/NacosApiExceptionTest.java

@@ -18,14 +18,14 @@ package com.alibaba.nacos.api.exception.api;
 
 import com.alibaba.nacos.api.common.Constants;
 import com.alibaba.nacos.api.model.v2.ErrorCode;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class NacosApiExceptionTest {
+class NacosApiExceptionTest {
     
     @Test
-    public void testEmptyConstructor() {
+    void testEmptyConstructor() {
         NacosApiException exception = new NacosApiException();
         assertEquals(0, exception.getErrCode());
         assertEquals(0, exception.getDetailErrCode());
@@ -34,7 +34,7 @@ public class NacosApiExceptionTest {
     }
     
     @Test
-    public void testConstructorWithoutCause() {
+    void testConstructorWithoutCause() {
         NacosApiException exception = new NacosApiException(500, ErrorCode.SERVER_ERROR, "test");
         assertEquals(500, exception.getErrCode());
         assertEquals(ErrorCode.SERVER_ERROR.getCode().intValue(), exception.getDetailErrCode());
@@ -43,7 +43,7 @@ public class NacosApiExceptionTest {
     }
     
     @Test
-    public void testConstructorWithCause() {
+    void testConstructorWithCause() {
         NacosApiException exception = new NacosApiException(500, ErrorCode.SERVER_ERROR,
                 new RuntimeException("cause test"), "test");
         assertEquals(500, exception.getErrCode());

api/src/test/java/com/alibaba/nacos/api/exception/runtime/NacosDeserializationExceptionTest.java

@@ -18,17 +18,17 @@ package com.alibaba.nacos.api.exception.runtime;
 
 import com.alibaba.nacos.api.common.Constants;
 import com.fasterxml.jackson.databind.type.SimpleType;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.lang.reflect.Type;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
-public class NacosDeserializationExceptionTest {
+class NacosDeserializationExceptionTest {
     
     @Test
-    public void testEmptyConstructor() {
+    void testEmptyConstructor() {
         NacosDeserializationException exception = new NacosDeserializationException();
         assertEquals(Constants.Exception.DESERIALIZE_ERROR_CODE, exception.getErrCode());
         assertNull(exception.getMessage());
@@ -36,7 +36,7 @@ public class NacosDeserializationExceptionTest {
     }
     
     @Test
-    public void testConstructorWithTargetClass() {
+    void testConstructorWithTargetClass() {
         NacosDeserializationException exception = new NacosDeserializationException(
                 NacosDeserializationExceptionTest.class);
         assertEquals(Constants.Exception.DESERIALIZE_ERROR_CODE, exception.getErrCode());
@@ -46,7 +46,7 @@ public class NacosDeserializationExceptionTest {
     }
     
     @Test
-    public void testConstructorWithTargetType() {
+    void testConstructorWithTargetType() {
         Type type = SimpleType.constructUnsafe(NacosDeserializationExceptionTest.class);
         NacosDeserializationException exception = new NacosDeserializationException(type);
         assertEquals(Constants.Exception.DESERIALIZE_ERROR_CODE, exception.getErrCode());
@@ -57,7 +57,7 @@ public class NacosDeserializationExceptionTest {
     }
     
     @Test
-    public void testConstructorWithCause() {
+    void testConstructorWithCause() {
         NacosDeserializationException exception = new NacosDeserializationException(new RuntimeException("test"));
         assertEquals(Constants.Exception.DESERIALIZE_ERROR_CODE, exception.getErrCode());
         assertEquals("errCode: 101, errMsg: Nacos deserialize failed.  ", exception.getMessage());
@@ -65,7 +65,7 @@ public class NacosDeserializationExceptionTest {
     }
     
     @Test
-    public void testConstructorWithTargetClassAndCause() {
+    void testConstructorWithTargetClassAndCause() {
         NacosDeserializationException exception = new NacosDeserializationException(
                 NacosDeserializationExceptionTest.class, new RuntimeException("test"));
         assertEquals(Constants.Exception.DESERIALIZE_ERROR_CODE, exception.getErrCode());
@@ -75,7 +75,7 @@ public class NacosDeserializationExceptionTest {
     }
     
     @Test
-    public void testConstructorWithTargetTypeAndCause() {
+    void testConstructorWithTargetTypeAndCause() {
         Type type = SimpleType.constructUnsafe(NacosDeserializationExceptionTest.class);
         NacosDeserializationException exception = new NacosDeserializationException(type, new RuntimeException("test"));
         assertEquals(Constants.Exception.DESERIALIZE_ERROR_CODE, exception.getErrCode());

api/src/test/java/com/alibaba/nacos/api/exception/runtime/NacosLoadExceptionTest.java

@@ -16,15 +16,15 @@
 
 package com.alibaba.nacos.api.exception.runtime;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
-public class NacosLoadExceptionTest {
+class NacosLoadExceptionTest {
     
     @Test
-    public void testConstructor() {
+    void testConstructor() {
         NacosLoadException exception = new NacosLoadException("test");
         assertEquals("test", exception.getMessage());
         assertNull(exception.getCause());

api/src/test/java/com/alibaba/nacos/api/exception/runtime/NacosRuntimeExceptionTest.java

@@ -17,16 +17,16 @@
 package com.alibaba.nacos.api.exception.runtime;
 
 import com.alibaba.nacos.api.exception.NacosException;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class NacosRuntimeExceptionTest {
+class NacosRuntimeExceptionTest {
     
     @Test
-    public void testConstructorWithErrorCode() {
+    void testConstructorWithErrorCode() {
         NacosRuntimeException exception = new NacosRuntimeException(NacosException.INVALID_PARAM);
         assertEquals(NacosException.INVALID_PARAM, exception.getErrCode());
         assertNull(exception.getMessage());
@@ -34,7 +34,7 @@ public class NacosRuntimeExceptionTest {
     }
     
     @Test
-    public void testConstructorWithErrorCodeAndMsg() {
+    void testConstructorWithErrorCodeAndMsg() {
         NacosRuntimeException exception = new NacosRuntimeException(NacosException.INVALID_PARAM, "test");
         assertEquals(NacosException.INVALID_PARAM, exception.getErrCode());
         assertEquals("errCode: 400, errMsg: test ", exception.getMessage());
@@ -42,7 +42,7 @@ public class NacosRuntimeExceptionTest {
     }
     
     @Test
-    public void testConstructorWithErrorCodeAndCause() {
+    void testConstructorWithErrorCodeAndCause() {
         NacosRuntimeException exception = new NacosRuntimeException(NacosException.INVALID_PARAM,
                 new RuntimeException("test"));
         assertEquals(NacosException.INVALID_PARAM, exception.getErrCode());
@@ -51,9 +51,9 @@ public class NacosRuntimeExceptionTest {
     }
     
     @Test
-    public void testConstructorWithFull() {
-        NacosRuntimeException exception = new NacosRuntimeException(NacosException.INVALID_PARAM,
-                "test", new RuntimeException("cause test"));
+    void testConstructorWithFull() {
+        NacosRuntimeException exception = new NacosRuntimeException(NacosException.INVALID_PARAM, "test",
+                new RuntimeException("cause test"));
         assertEquals(NacosException.INVALID_PARAM, exception.getErrCode());
         assertEquals("errCode: 400, errMsg: test ", exception.getMessage());
         assertTrue(exception.getCause() instanceof RuntimeException);

api/src/test/java/com/alibaba/nacos/api/exception/runtime/NacosSerializationExceptionTest.java

@@ -17,15 +17,15 @@
 package com.alibaba.nacos.api.exception.runtime;
 
 import com.alibaba.nacos.api.common.Constants;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
-public class NacosSerializationExceptionTest {
+class NacosSerializationExceptionTest {
     
     @Test
-    public void testEmptyConstructor() {
+    void testEmptyConstructor() {
         NacosSerializationException exception = new NacosSerializationException();
         assertEquals(Constants.Exception.SERIALIZE_ERROR_CODE, exception.getErrCode());
         assertNull(exception.getMessage());
@@ -33,7 +33,7 @@ public class NacosSerializationExceptionTest {
     }
     
     @Test
-    public void testConstructorWithSerializedClass() {
+    void testConstructorWithSerializedClass() {
         NacosSerializationException exception = new NacosSerializationException(NacosSerializationExceptionTest.class);
         assertEquals(Constants.Exception.SERIALIZE_ERROR_CODE, exception.getErrCode());
         assertEquals(String.format("errCode: 100, errMsg: Nacos serialize for class [%s] failed.  ",
@@ -42,7 +42,7 @@ public class NacosSerializationExceptionTest {
     }
     
     @Test
-    public void testConstructorWithCause() {
+    void testConstructorWithCause() {
         NacosSerializationException exception = new NacosSerializationException(new RuntimeException("test"));
         assertEquals(Constants.Exception.SERIALIZE_ERROR_CODE, exception.getErrCode());
         assertEquals("errCode: 100, errMsg: Nacos serialize failed.  ", exception.getMessage());
@@ -50,7 +50,7 @@ public class NacosSerializationExceptionTest {
     }
     
     @Test
-    public void testConstructorWithSerializedClassAndCause() {
+    void testConstructorWithSerializedClassAndCause() {
         NacosSerializationException exception = new NacosSerializationException(NacosSerializationExceptionTest.class,
                 new RuntimeException("test"));
         assertEquals(Constants.Exception.SERIALIZE_ERROR_CODE, exception.getErrCode());

api/src/test/java/com/alibaba/nacos/api/model/v2/ErrorCodeTest.java

@@ -16,16 +16,17 @@
 
 package com.alibaba.nacos.api.model.v2;
 
-import static org.junit.Assert.assertEquals;
+import org.junit.jupiter.api.Test;
 
 import java.util.HashSet;
 import java.util.Set;
 
-import org.junit.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class ErrorCodeTest {
+class ErrorCodeTest {
+    
     @Test
-    public void testCodeNotSame() {
+    void testCodeNotSame() {
         Class<ErrorCode> errorCodeClass = ErrorCode.class;
         
         ErrorCode[] errorCodes = errorCodeClass.getEnumConstants();

api/src/test/java/com/alibaba/nacos/api/model/v2/ResultTest.java

@@ -16,15 +16,15 @@
 
 package com.alibaba.nacos.api.model.v2;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
-public class ResultTest {
+class ResultTest {
     
     @Test
-    public void testSuccessEmptyResult() {
+    void testSuccessEmptyResult() {
         Result<String> result = Result.success();
         assertNull(result.getData());
         assertEquals(ErrorCode.SUCCESS.getCode(), result.getCode());
@@ -32,7 +32,7 @@ public class ResultTest {
     }
     
     @Test
-    public void testSuccessWithData() {
+    void testSuccessWithData() {
         Result<String> result = Result.success("test");
         assertEquals("test", result.getData());
         assertEquals(ErrorCode.SUCCESS.getCode(), result.getCode());
@@ -40,7 +40,7 @@ public class ResultTest {
     }
     
     @Test
-    public void testFailureMessageResult() {
+    void testFailureMessageResult() {
         Result<String> result = Result.failure("test");
         assertNull(result.getData());
         assertEquals(ErrorCode.SERVER_ERROR.getCode(), result.getCode());
@@ -48,7 +48,7 @@ public class ResultTest {
     }
     
     @Test
-    public void testFailureWithoutData() {
+    void testFailureWithoutData() {
         Result<String> result = Result.failure(ErrorCode.DATA_ACCESS_ERROR);
         assertNull(result.getData());
         assertEquals(ErrorCode.DATA_ACCESS_ERROR.getCode(), result.getCode());
@@ -56,7 +56,7 @@ public class ResultTest {
     }
     
     @Test
-    public void testFailureWithData() {
+    void testFailureWithData() {
         Result<String> result = Result.failure(ErrorCode.DATA_ACCESS_ERROR, "error");
         assertEquals("error", result.getData());
         assertEquals(ErrorCode.DATA_ACCESS_ERROR.getCode(), result.getCode());
@@ -64,7 +64,7 @@ public class ResultTest {
     }
     
     @Test
-    public void testToString() {
+    void testToString() {
         Result<String> result = Result.success("test");
         assertEquals("Result{errorCode=0, message='success', data=test}", result.toString());
     }

api/src/test/java/com/alibaba/nacos/api/naming/ability/ClientNamingAbilityTest.java

@@ -16,15 +16,15 @@
 
 package com.alibaba.nacos.api.naming.ability;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ClientNamingAbilityTest {
+class ClientNamingAbilityTest {
     
     @Test
-    public void testGetAndSet() {
+    void testGetAndSet() {
         ClientNamingAbility ability = new ClientNamingAbility();
         assertFalse(ability.isSupportDeltaPush());
         assertFalse(ability.isSupportRemoteMetric());

api/src/test/java/com/alibaba/nacos/api/naming/ability/ServerNamingAbilityTest.java

@@ -20,34 +20,33 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
 
-public class ServerNamingAbilityTest {
+class ServerNamingAbilityTest {
     
     private static ObjectMapper jacksonMapper;
     
-    @BeforeClass
-    public static void setUpClass() throws Exception {
+    @BeforeAll
+    static void setUpClass() throws Exception {
         jacksonMapper = new ObjectMapper();
         jacksonMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         jacksonMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testDeserializeServerNamingAbilityForNonExistItem() throws JsonProcessingException {
+    void testDeserializeServerNamingAbilityForNonExistItem() throws JsonProcessingException {
         String nonExistItemJson = "{\"exampleAbility\":false}";
         ServerNamingAbility actual = jacksonMapper.readValue(nonExistItemJson, ServerNamingAbility.class);
         assertFalse(actual.isSupportJraft());
     }
     
     @Test
-    public void testEquals() throws JsonProcessingException {
+    void testEquals() throws JsonProcessingException {
         ServerNamingAbility expected = new ServerNamingAbility();
         expected.setSupportJraft(true);
         String serializeJson = jacksonMapper.writeValueAsString(expected);
@@ -60,19 +59,19 @@ public class ServerNamingAbilityTest {
     }
     
     @Test
-    public void testEqualsForOneObject() {
+    void testEqualsForOneObject() {
         ServerNamingAbility ability = new ServerNamingAbility();
-        assertTrue(ability.equals(ability));
+        assertEquals(ability, ability);
     }
     
     @Test
-    public void testEqualsForOtherAbility() {
+    void testEqualsForOtherAbility() {
         ServerNamingAbility ability = new ServerNamingAbility();
-        assertFalse(ability.equals(new ClientNamingAbility()));
+        assertNotEquals(ability, new ClientNamingAbility());
     }
     
     @Test
-    public void testHashCode() throws JsonProcessingException {
+    void testHashCode() throws JsonProcessingException {
         ServerNamingAbility expected = new ServerNamingAbility();
         expected.setSupportJraft(true);
         String serializeJson = jacksonMapper.writeValueAsString(expected);

api/src/test/java/com/alibaba/nacos/api/naming/listener/NamingEventTest.java

@@ -16,26 +16,26 @@
 
 package com.alibaba.nacos.api.naming.listener;
 
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class NamingEventTest {
+class NamingEventTest {
     
     private MockNamingEventListener eventListener;
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         eventListener = new MockNamingEventListener();
     }
     
     @Test
-    public void testNamingEventWithSimpleConstructor() {
+    void testNamingEventWithSimpleConstructor() {
         NamingEvent event = new NamingEvent("serviceName", Collections.EMPTY_LIST);
         assertEquals("serviceName", event.getServiceName());
         assertNull(event.getGroupName());
@@ -49,7 +49,7 @@ public class NamingEventTest {
     }
     
     @Test
-    public void testNamingEventWithFullConstructor() {
+    void testNamingEventWithFullConstructor() {
         NamingEvent event = new NamingEvent("serviceName", "group", "clusters", Collections.EMPTY_LIST);
         assertEquals("serviceName", event.getServiceName());
         assertEquals("group", event.getGroupName());

api/src/test/java/com/alibaba/nacos/api/naming/pojo/ClusterTest.java

@@ -22,29 +22,29 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ClusterTest {
+class ClusterTest {
     
     private static ObjectMapper mapper;
     
-    @BeforeClass
-    public static void setUp() throws Exception {
+    @BeforeAll
+    static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSetAndGet() {
+    void testSetAndGet() {
         Cluster actual = new Cluster();
         assertNull(actual.getName());
         assertNull(actual.getServiceName());
@@ -72,7 +72,7 @@ public class ClusterTest {
     }
     
     @Test
-    public void testJsonSerialize() throws JsonProcessingException {
+    void testJsonSerialize() throws JsonProcessingException {
         Cluster actual = new Cluster("cluster");
         actual.setServiceName("group@@service");
         actual.setHealthChecker(new Http());
@@ -91,7 +91,7 @@ public class ClusterTest {
     }
     
     @Test
-    public void testJsonDeserialize() throws JsonProcessingException {
+    void testJsonDeserialize() throws JsonProcessingException {
         String json = "{\"serviceName\":\"group@@service\",\"name\":\"cluster\","
                 + "\"healthChecker\":{\"type\":\"HTTP\",\"path\":\"\",\"headers\":\"\",\"expectedResponseCode\":200},"
                 + "\"defaultPort\":81,\"defaultCheckPort\":82,\"useIPPort4Check\":false,\"metadata\":{\"a\":\"a\"}}";

api/src/test/java/com/alibaba/nacos/api/naming/pojo/InstanceTest.java

@@ -22,30 +22,31 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 import java.util.HashMap;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class InstanceTest {
+class InstanceTest {
     
     private static ObjectMapper mapper;
     
-    @BeforeClass
-    public static void setUp() throws Exception {
+    @BeforeAll
+    static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSetAndGet() {
+    void testSetAndGet() {
         Instance instance = new Instance();
         assertNull(instance.getInstanceId());
         assertNull(instance.getIp());
@@ -62,7 +63,7 @@ public class InstanceTest {
     }
     
     @Test
-    public void testJsonSerialize() throws JsonProcessingException {
+    void testJsonSerialize() throws JsonProcessingException {
         Instance instance = new Instance();
         setInstance(instance);
         String actual = mapper.writeValueAsString(instance);
@@ -82,7 +83,7 @@ public class InstanceTest {
     }
     
     @Test
-    public void testJsonDeserialize() throws JsonProcessingException {
+    void testJsonDeserialize() throws JsonProcessingException {
         String json = "{\"instanceId\":\"id\",\"ip\":\"1.1.1.1\",\"port\":1000,\"weight\":100.0,\"healthy\":false,"
                 + "\"enabled\":false,\"ephemeral\":false,\"clusterName\":\"cluster\","
                 + "\"serviceName\":\"group@@serviceName\",\"metadata\":{\"a\":\"b\"},\"instanceHeartBeatInterval\":5000,"
@@ -92,21 +93,21 @@ public class InstanceTest {
     }
     
     @Test
-    public void testCheckClusterNameFormat() {
+    void testCheckClusterNameFormat() {
         Instance instance = new Instance();
         instance.setClusterName("demo");
         assertEquals("demo", instance.getClusterName());
     }
     
     @Test
-    public void testToInetAddr() {
+    void testToInetAddr() {
         Instance instance = new Instance();
         setInstance(instance);
         assertEquals("1.1.1.1:1000", instance.toInetAddr());
     }
     
     @Test
-    public void testContainsMetadata() {
+    void testContainsMetadata() {
         Instance instance = new Instance();
         assertFalse(instance.containsMetadata("a"));
         instance.setMetadata(null);
@@ -116,7 +117,7 @@ public class InstanceTest {
     }
     
     @Test
-    public void testGetInstanceIdGenerator() {
+    void testGetInstanceIdGenerator() {
         Instance instance = new Instance();
         assertEquals(Constants.DEFAULT_INSTANCE_ID_GENERATOR, instance.getInstanceIdGenerator());
         instance.addMetadata(PreservedMetadataKeys.INSTANCE_ID_GENERATOR, "test");
@@ -124,19 +125,19 @@ public class InstanceTest {
     }
     
     @Test
-    public void testEquals() {
+    void testEquals() {
         Instance actual = new Instance();
         setInstance(actual);
         actual.setMetadata(new HashMap<>());
         actual.addMetadata("a", "b");
-        assertFalse(actual.equals(new Object()));
+        assertNotEquals(actual, new Object());
         Instance expected = new Instance();
         setInstance(expected);
         expected.setMetadata(new HashMap<>());
         expected.addMetadata("a", "b");
-        assertTrue(actual.equals(expected));
+        assertEquals(actual, expected);
         expected.addMetadata("a", "c");
-        assertFalse(actual.equals(expected));
+        assertNotEquals(actual, expected);
     }
     
     private void setInstance(Instance instance) {

api/src/test/java/com/alibaba/nacos/api/naming/pojo/ListViewTest.java

@@ -16,19 +16,19 @@
 
 package com.alibaba.nacos.api.naming.pojo;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 import java.util.LinkedList;
 import java.util.List;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
-public class ListViewTest {
+class ListViewTest {
     
     @Test
-    public void testToString() {
+    void testToString() {
         List<String> data = new LinkedList<>();
         data.add("1");
         data.add("2");
@@ -41,7 +41,7 @@ public class ListViewTest {
     }
     
     @Test
-    public void testSetAndGet() {
+    void testSetAndGet() {
         ListView<String> listView = new ListView<>();
         assertEquals(0, listView.getCount());
         assertNull(listView.getData());

api/src/test/java/com/alibaba/nacos/api/naming/pojo/ServiceInfoTest.java

@@ -20,8 +20,8 @@ import com.alibaba.nacos.api.utils.StringUtils;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.io.IOException;
 import java.io.UnsupportedEncodingException;
@@ -30,25 +30,26 @@ import java.util.Collections;
 import java.util.LinkedList;
 import java.util.List;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ServiceInfoTest {
+class ServiceInfoTest {
     
     private ObjectMapper mapper;
     
     private ServiceInfo serviceInfo;
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         serviceInfo = new ServiceInfo("G@@testName", "testClusters");
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         String actual = mapper.writeValueAsString(serviceInfo);
         assertTrue(actual.contains("\"name\":\"G@@testName\""));
         assertTrue(actual.contains("\"clusters\":\"testClusters\""));
@@ -64,7 +65,7 @@ public class ServiceInfoTest {
     }
     
     @Test
-    public void testDeserialize() throws IOException {
+    void testDeserialize() throws IOException {
         String example = "{\"name\":\"G@@testName\",\"clusters\":\"testClusters\",\"cacheMillis\":1000,\"hosts\":[],"
                 + "\"lastRefTime\":0,\"checksum\":\"\",\"allIPs\":false,\"valid\":true,\"groupName\":\"\"}";
         ServiceInfo actual = mapper.readValue(example, ServiceInfo.class);
@@ -82,14 +83,14 @@ public class ServiceInfoTest {
     }
     
     @Test
-    public void testGetKey() {
+    void testGetKey() {
         String key = serviceInfo.getKey();
         assertEquals("G@@testName@@testClusters", key);
         assertEquals("G@@testName@@testClusters", serviceInfo.toString());
     }
     
     @Test
-    public void testGetKeyEncode() {
+    void testGetKeyEncode() {
         String key = serviceInfo.getKeyEncoded();
         String encodeName = null;
         try {
@@ -101,7 +102,7 @@ public class ServiceInfoTest {
     }
     
     @Test
-    public void testServiceInfoConstructor() {
+    void testServiceInfoConstructor() {
         String key1 = "group@@name";
         String key2 = "group@@name@@c2";
         ServiceInfo s1 = new ServiceInfo(key1);
@@ -110,32 +111,34 @@ public class ServiceInfoTest {
         assertEquals(key2, s2.getKey());
     }
     
-    @Test(expected = IllegalArgumentException.class)
-    public void testServiceInfoConstructorWithError() {
-        String key1 = "name";
-        ServiceInfo s1 = new ServiceInfo(key1);
+    @Test
+    void testServiceInfoConstructorWithError() {
+        assertThrows(IllegalArgumentException.class, () -> {
+            String key1 = "name";
+            ServiceInfo s1 = new ServiceInfo(key1);
+        });
     }
     
     @Test
-    public void testValidateForAllIps() {
+    void testValidateForAllIps() {
         serviceInfo.setAllIPs(true);
         assertTrue(serviceInfo.validate());
     }
     
     @Test
-    public void testValidateForNullHosts() {
+    void testValidateForNullHosts() {
         serviceInfo.setHosts(null);
         assertFalse(serviceInfo.validate());
     }
     
     @Test
-    public void testValidateForEmptyHosts() {
+    void testValidateForEmptyHosts() {
         serviceInfo.setHosts(Collections.EMPTY_LIST);
         assertFalse(serviceInfo.validate());
     }
     
     @Test
-    public void testValidateForUnhealthyHosts() {
+    void testValidateForUnhealthyHosts() {
         Instance instance = new Instance();
         instance.setHealthy(false);
         serviceInfo.addHost(instance);
@@ -143,7 +146,7 @@ public class ServiceInfoTest {
     }
     
     @Test
-    public void testValidateForBothUnhealthyAndHealthyHosts() {
+    void testValidateForBothUnhealthyAndHealthyHosts() {
         List<Instance> instanceList = new LinkedList<>();
         Instance instance = new Instance();
         instanceList.add(instance);
@@ -155,7 +158,7 @@ public class ServiceInfoTest {
     }
     
     @Test
-    public void testFromKey() {
+    void testFromKey() {
         String key1 = "group@@name";
         String key2 = "group@@name@@c2";
         ServiceInfo s1 = ServiceInfo.fromKey(key1);
@@ -165,7 +168,7 @@ public class ServiceInfoTest {
     }
     
     @Test
-    public void testSetAndGet() throws JsonProcessingException {
+    void testSetAndGet() throws JsonProcessingException {
         serviceInfo.setReachProtectionThreshold(true);
         serviceInfo.setJsonFromServer(mapper.writeValueAsString(serviceInfo));
         ServiceInfo actual = mapper.readValue(serviceInfo.getJsonFromServer(), ServiceInfo.class);

api/src/test/java/com/alibaba/nacos/api/naming/pojo/ServiceTest.java

@@ -16,19 +16,19 @@
 
 package com.alibaba.nacos.api.naming.pojo;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 import java.util.HashMap;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ServiceTest {
+class ServiceTest {
     
     @Test
-    public void testSetAndGet() {
+    void testSetAndGet() {
         Service service = new Service();
         assertNull(service.getName());
         assertNull(service.getAppName());
@@ -51,12 +51,13 @@ public class ServiceTest {
     }
     
     @Test
-    public void testToString() {
+    void testToString() {
         Service service = new Service("service");
         service.setGroupName("group");
         service.setAppName("app");
         service.setProtectThreshold(1.0f);
         service.setMetadata(Collections.singletonMap("a", "b"));
-        assertEquals("Service{name='service', protectThreshold=1.0, appName='app', groupName='group', metadata={a=b}}", service.toString());
+        assertEquals("Service{name='service', protectThreshold=1.0, appName='app', groupName='group', metadata={a=b}}",
+                service.toString());
     }
 }

api/src/test/java/com/alibaba/nacos/api/naming/pojo/builder/InstanceBuilderTest.java

@@ -17,18 +17,18 @@
 package com.alibaba.nacos.api.naming.pojo.builder;
 
 import com.alibaba.nacos.api.naming.pojo.Instance;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.HashMap;
 import java.util.Map;
 
 import static org.hamcrest.CoreMatchers.is;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertThat;
-import static org.junit.Assert.assertTrue;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class InstanceBuilderTest {
+class InstanceBuilderTest {
     
     private static final String SERVICE_NAME = "testService";
     
@@ -53,7 +53,7 @@ public class InstanceBuilderTest {
     private static final String META_VALUE = "value";
     
     @Test
-    public void testBuildFullInstance() {
+    void testBuildFullInstance() {
         InstanceBuilder builder = InstanceBuilder.newBuilder();
         Instance actual = builder.setServiceName(SERVICE_NAME).setClusterName(CLUSTER_NAME).setInstanceId(INSTANCE_ID)
                 .setIp(IP).setPort(PORT).setWeight(WEIGHT).setHealthy(HEALTHY).setEnabled(ENABLED)
@@ -72,7 +72,7 @@ public class InstanceBuilderTest {
     }
     
     @Test
-    public void testBuildInstanceWithoutNewMetadata() {
+    void testBuildInstanceWithoutNewMetadata() {
         InstanceBuilder builder = InstanceBuilder.newBuilder();
         Map<String, String> metadata = new HashMap<>();
         metadata.put("test", "test");
@@ -90,7 +90,7 @@ public class InstanceBuilderTest {
     }
     
     @Test
-    public void testBuildEmptyInstance() {
+    void testBuildEmptyInstance() {
         InstanceBuilder builder = InstanceBuilder.newBuilder();
         Instance actual = builder.build();
         assertNull(actual.getServiceName());

api/src/test/java/com/alibaba/nacos/api/naming/pojo/healthcheck/AbstractHealthCheckerTest.java

@@ -20,26 +20,26 @@ import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.jsontype.NamedType;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.io.IOException;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class AbstractHealthCheckerTest {
+class AbstractHealthCheckerTest {
     
     private final ObjectMapper objectMapper = new ObjectMapper();
     
-    @Before
-    public void setUp() {
+    @BeforeEach
+    void setUp() {
         objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         objectMapper.registerSubtypes(new NamedType(TestChecker.class, TestChecker.TYPE));
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         TestChecker testChecker = new TestChecker();
         testChecker.setTestValue("");
         String actual = objectMapper.writeValueAsString(testChecker);
@@ -48,7 +48,7 @@ public class AbstractHealthCheckerTest {
     }
     
     @Test
-    public void testDeserialize() throws IOException {
+    void testDeserialize() throws IOException {
         String testChecker = "{\"type\":\"TEST\",\"testValue\":\"\"}";
         TestChecker actual = objectMapper.readValue(testChecker, TestChecker.class);
         assertEquals("", actual.getTestValue());
@@ -56,7 +56,7 @@ public class AbstractHealthCheckerTest {
     }
     
     @Test
-    public void testClone() throws CloneNotSupportedException {
+    void testClone() throws CloneNotSupportedException {
         AbstractHealthChecker none = new AbstractHealthChecker.None().clone();
         assertEquals(AbstractHealthChecker.None.class, none.getClass());
     }

api/src/test/java/com/alibaba/nacos/api/naming/pojo/healthcheck/HealthCheckTypeTest.java

@@ -19,17 +19,17 @@ package com.alibaba.nacos.api.naming.pojo.healthcheck;
 import com.alibaba.nacos.api.naming.pojo.healthcheck.impl.Http;
 import com.alibaba.nacos.api.naming.pojo.healthcheck.impl.Mysql;
 import com.alibaba.nacos.api.naming.pojo.healthcheck.impl.Tcp;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.List;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
-public class HealthCheckTypeTest {
+class HealthCheckTypeTest {
     
     @Test
-    public void testOfHealthCheckerClassForBuildInType() {
+    void testOfHealthCheckerClassForBuildInType() {
         assertEquals(Tcp.class, HealthCheckType.ofHealthCheckerClass("TCP"));
         assertEquals(Http.class, HealthCheckType.ofHealthCheckerClass("HTTP"));
         assertEquals(Mysql.class, HealthCheckType.ofHealthCheckerClass("MYSQL"));
@@ -37,18 +37,18 @@ public class HealthCheckTypeTest {
     }
     
     @Test
-    public void testOfHealthCheckerClassForExtendType() {
+    void testOfHealthCheckerClassForExtendType() {
         HealthCheckType.registerHealthChecker(TestChecker.TYPE, TestChecker.class);
         assertEquals(TestChecker.class, HealthCheckType.ofHealthCheckerClass(TestChecker.TYPE));
     }
     
     @Test
-    public void testOfHealthCheckerClassForNonExistType() {
+    void testOfHealthCheckerClassForNonExistType() {
         assertNull(HealthCheckType.ofHealthCheckerClass("non-exist"));
     }
     
     @Test
-    public void testGetLoadedHealthCheckerClasses() {
+    void testGetLoadedHealthCheckerClasses() {
         HealthCheckType.registerHealthChecker(TestChecker.TYPE, TestChecker.class);
         List<Class<? extends AbstractHealthChecker>> actual = HealthCheckType.getLoadedHealthCheckerClasses();
         assertEquals(5, actual.size());

api/src/test/java/com/alibaba/nacos/api/naming/pojo/healthcheck/HealthCheckerFactoryTest.java

@@ -19,75 +19,80 @@ package com.alibaba.nacos.api.naming.pojo.healthcheck;
 import com.alibaba.nacos.api.exception.runtime.NacosDeserializationException;
 import com.alibaba.nacos.api.exception.runtime.NacosSerializationException;
 import com.alibaba.nacos.api.naming.pojo.healthcheck.impl.Tcp;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class HealthCheckerFactoryTest {
+class HealthCheckerFactoryTest {
     
-    @BeforeClass
-    public static void beforeClass() {
+    @BeforeAll
+    static void beforeClass() {
         HealthCheckerFactory.registerSubType(new TestChecker());
     }
     
     @Test
-    public void testSerialize() {
+    void testSerialize() {
         Tcp tcp = new Tcp();
         String actual = HealthCheckerFactory.serialize(tcp);
         assertTrue(actual.contains("\"type\":\"TCP\""));
     }
     
     @Test
-    public void testSerializeExtend() {
+    void testSerializeExtend() {
         TestChecker testChecker = new TestChecker();
         String actual = HealthCheckerFactory.serialize(testChecker);
         assertTrue(actual.contains("\"type\":\"TEST\""));
     }
     
     @Test
-    public void testDeserialize() {
+    void testDeserialize() {
         String tcpString = "{\"type\":\"TCP\"}";
         AbstractHealthChecker actual = HealthCheckerFactory.deserialize(tcpString);
         assertEquals(Tcp.class, actual.getClass());
     }
     
     @Test
-    public void testDeserializeExtend() {
+    void testDeserializeExtend() {
         String tcpString = "{\"type\":\"TEST\",\"testValue\":null}";
         AbstractHealthChecker actual = HealthCheckerFactory.deserialize(tcpString);
         assertEquals(TestChecker.class, actual.getClass());
     }
     
     @Test
-    public void testSerializeNoRegister() {
+    void testSerializeNoRegister() {
         NoRegisterHealthChecker noRegister = new NoRegisterHealthChecker();
         assertFalse(HealthCheckerFactory.serialize(noRegister).contains("no register"));
     }
     
     @Test
-    public void testDeserializeNoRegister() {
+    void testDeserializeNoRegister() {
         String tcpString = "{\"type\":\"no register\",\"testValue\":null}";
         AbstractHealthChecker actual = HealthCheckerFactory.deserialize(tcpString);
         assertEquals(AbstractHealthChecker.None.class, actual.getClass());
     }
     
-    @Test(expected = NacosSerializationException.class)
-    public void testSerializeFailure() {
-        SelfDependHealthChecker selfDependHealthChecker = new SelfDependHealthChecker();
-        System.out.println(HealthCheckerFactory.serialize(selfDependHealthChecker));
-    }
-    
-    @Test(expected = NacosDeserializationException.class)
-    public void testDeserializeFailure() {
-        String errorString = "{\"type\"=\"TCP\"}";
-        System.out.println(HealthCheckerFactory.deserialize(errorString));
+    @Test
+    void testSerializeFailure() {
+        assertThrows(NacosSerializationException.class, () -> {
+            SelfDependHealthChecker selfDependHealthChecker = new SelfDependHealthChecker();
+            System.out.println(HealthCheckerFactory.serialize(selfDependHealthChecker));
+        });
     }
     
     @Test
-    public void testCreateNoneHealthChecker() {
+    void testDeserializeFailure() {
+        assertThrows(NacosDeserializationException.class, () -> {
+            String errorString = "{\"type\"=\"TCP\"}";
+            System.out.println(HealthCheckerFactory.deserialize(errorString));
+        });
+    }
+    
+    @Test
+    void testCreateNoneHealthChecker() {
         assertEquals(AbstractHealthChecker.None.class, HealthCheckerFactory.createNoneHealthChecker().getClass());
     }
     

api/src/test/java/com/alibaba/nacos/api/naming/pojo/healthcheck/TestChecker.java

@@ -28,6 +28,10 @@ public class TestChecker extends AbstractHealthChecker {
     
     private String testValue;
     
+    public TestChecker() {
+        super(TYPE);
+    }
+    
     public String getTestValue() {
         return testValue;
     }
@@ -36,10 +40,6 @@ public class TestChecker extends AbstractHealthChecker {
         this.testValue = testValue;
     }
     
-    public TestChecker() {
-        super(TYPE);
-    }
-    
     @Override
     public AbstractHealthChecker clone() throws CloneNotSupportedException {
         return null;

api/src/test/java/com/alibaba/nacos/api/naming/pojo/healthcheck/impl/HttpTest.java

@@ -18,36 +18,37 @@ package com.alibaba.nacos.api.naming.pojo.healthcheck.impl;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.io.IOException;
 import java.util.Map;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class HttpTest {
+class HttpTest {
     
     private ObjectMapper objectMapper;
     
     private Http http;
     
-    @Before
-    public void setUp() {
+    @BeforeEach
+    void setUp() {
         objectMapper = new ObjectMapper();
         http = new Http();
     }
     
     @Test
-    public void testGetExpectedResponseCodeWithEmpty() {
+    void testGetExpectedResponseCodeWithEmpty() {
         http.setHeaders("");
         assertTrue(http.getCustomHeaders().isEmpty());
     }
     
     @Test
-    public void testGetExpectedResponseCodeWithoutEmpty() {
+    void testGetExpectedResponseCodeWithoutEmpty() {
         http.setHeaders("x:a|y:");
         Map<String, String> actual = http.getCustomHeaders();
         assertFalse(actual.isEmpty());
@@ -56,7 +57,7 @@ public class HttpTest {
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         http.setHeaders("x:a|y:");
         http.setPath("/x");
         String actual = objectMapper.writeValueAsString(http);
@@ -67,7 +68,7 @@ public class HttpTest {
     }
     
     @Test
-    public void testDeserialize() throws IOException {
+    void testDeserialize() throws IOException {
         String testChecker = "{\"type\":\"HTTP\",\"path\":\"/x\",\"headers\":\"x:a|y:\",\"expectedResponseCode\":200}";
         Http actual = objectMapper.readValue(testChecker, Http.class);
         assertEquals("x:a|y:", actual.getHeaders());
@@ -78,23 +79,23 @@ public class HttpTest {
     }
     
     @Test
-    public void testClone() throws CloneNotSupportedException {
+    void testClone() throws CloneNotSupportedException {
         Http cloned = http.clone();
         assertEquals(http.hashCode(), cloned.hashCode());
-        assertTrue(http.equals(cloned));
+        assertEquals(http, cloned);
     }
     
     @Test
-    public void testNotEquals() throws CloneNotSupportedException {
-        assertFalse(http.equals(new Tcp()));
+    void testNotEquals() throws CloneNotSupportedException {
+        assertNotEquals(http, new Tcp());
         Http cloned = http.clone();
         cloned.setPath("aaa");
-        assertFalse(http.equals(cloned));
+        assertNotEquals(http, cloned);
         cloned = http.clone();
         cloned.setHeaders("aaa");
-        assertFalse(http.equals(cloned));
+        assertNotEquals(http, cloned);
         cloned = http.clone();
         cloned.setExpectedResponseCode(500);
-        assertFalse(http.equals(cloned));
+        assertNotEquals(http, cloned);
     }
 }

api/src/test/java/com/alibaba/nacos/api/naming/pojo/healthcheck/impl/MysqlTest.java

@@ -18,23 +18,23 @@ package com.alibaba.nacos.api.naming.pojo.healthcheck.impl;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.io.IOException;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class MysqlTest {
+class MysqlTest {
     
     private ObjectMapper objectMapper;
     
     private Mysql mysql;
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         mysql = new Mysql();
         mysql.setUser("user");
         mysql.setPwd("pwd");
@@ -43,7 +43,7 @@ public class MysqlTest {
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         String actual = objectMapper.writeValueAsString(mysql);
         assertTrue(actual.contains("\"user\":\"user\""));
         assertTrue(actual.contains("\"type\":\"MYSQL\""));
@@ -52,7 +52,7 @@ public class MysqlTest {
     }
     
     @Test
-    public void testDeserialize() throws IOException {
+    void testDeserialize() throws IOException {
         String testChecker = "{\"type\":\"MYSQL\",\"user\":\"user\",\"pwd\":\"pwd\",\"cmd\":\"cmd\"}";
         Mysql actual = objectMapper.readValue(testChecker, Mysql.class);
         assertEquals("cmd", actual.getCmd());
@@ -62,23 +62,23 @@ public class MysqlTest {
     }
     
     @Test
-    public void testClone() throws CloneNotSupportedException {
+    void testClone() throws CloneNotSupportedException {
         Mysql cloned = mysql.clone();
         assertEquals(mysql.hashCode(), cloned.hashCode());
-        assertTrue(mysql.equals(cloned));
+        assertEquals(mysql, cloned);
     }
     
     @Test
-    public void testNotEquals() throws CloneNotSupportedException {
-        assertFalse(mysql.equals(new Tcp()));
+    void testNotEquals() throws CloneNotSupportedException {
+        assertNotEquals(mysql, new Tcp());
         Mysql cloned = mysql.clone();
         cloned.setUser("aaa");
-        assertFalse(mysql.equals(cloned));
+        assertNotEquals(mysql, cloned);
         cloned = mysql.clone();
         cloned.setPwd("aaa");
-        assertFalse(mysql.equals(cloned));
+        assertNotEquals(mysql, cloned);
         cloned = mysql.clone();
         cloned.setCmd("aaa");
-        assertFalse(mysql.equals(cloned));
+        assertNotEquals(mysql, cloned);
     }
 }

api/src/test/java/com/alibaba/nacos/api/naming/pojo/healthcheck/impl/TcpTest.java

@@ -16,18 +16,17 @@
 
 package com.alibaba.nacos.api.naming.pojo.healthcheck.impl;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class TcpTest {
+class TcpTest {
     
     @Test
-    public void testClone() throws CloneNotSupportedException {
+    void testClone() throws CloneNotSupportedException {
         Tcp original = new Tcp();
         Tcp cloned = original.clone();
         assertEquals(original.hashCode(), cloned.hashCode());
-        assertTrue(original.equals(cloned));
+        assertEquals(original, cloned);
     }
 }

api/src/test/java/com/alibaba/nacos/api/naming/remote/request/BasedNamingRequestTest.java

@@ -19,11 +19,11 @@ package com.alibaba.nacos.api.naming.remote.request;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
+import org.junit.jupiter.api.BeforeAll;
 
 import static com.alibaba.nacos.api.common.Constants.Naming.NAMING_MODULE;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public abstract class BasedNamingRequestTest {
     
@@ -35,7 +35,7 @@ public abstract class BasedNamingRequestTest {
     
     protected static ObjectMapper mapper;
     
-    @BeforeClass
+    @BeforeAll
     public static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);

api/src/test/java/com/alibaba/nacos/api/naming/remote/request/BatchInstanceRequestTest.java

@@ -19,17 +19,17 @@ package com.alibaba.nacos.api.naming.remote.request;
 import com.alibaba.nacos.api.naming.pojo.Instance;
 import com.alibaba.nacos.api.naming.remote.NamingRemoteConstants;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class BatchInstanceRequestTest extends BasedNamingRequestTest {
+class BatchInstanceRequestTest extends BasedNamingRequestTest {
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         BatchInstanceRequest request = new BatchInstanceRequest(NAMESPACE, SERVICE, GROUP,
                 NamingRemoteConstants.BATCH_REGISTER_INSTANCE, Collections.singletonList(new Instance()));
         String json = mapper.writeValueAsString(request);
@@ -39,7 +39,7 @@ public class BatchInstanceRequestTest extends BasedNamingRequestTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"headers\":{},\"namespace\":\"namespace\",\"serviceName\":\"service\",\"groupName\":\"group\","
                 + "\"type\":\"batchRegisterInstance\",\"instances\":[{\"port\":0,\"weight\":1.0,\"healthy\":true,"
                 + "\"enabled\":true,\"ephemeral\":true,\"metadata\":{},\"instanceIdGenerator\":\"simple\","

api/src/test/java/com/alibaba/nacos/api/naming/remote/request/InstanceRequestTest.java

@@ -19,15 +19,15 @@ package com.alibaba.nacos.api.naming.remote.request;
 import com.alibaba.nacos.api.naming.pojo.Instance;
 import com.alibaba.nacos.api.naming.remote.NamingRemoteConstants;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class InstanceRequestTest extends BasedNamingRequestTest {
+class InstanceRequestTest extends BasedNamingRequestTest {
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         InstanceRequest request = new InstanceRequest(NAMESPACE, SERVICE, GROUP,
                 NamingRemoteConstants.REGISTER_INSTANCE, new Instance());
         String json = mapper.writeValueAsString(request);
@@ -37,7 +37,7 @@ public class InstanceRequestTest extends BasedNamingRequestTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"headers\":{},\"namespace\":\"namespace\",\"serviceName\":\"service\",\"groupName\":\"group\","
                 + "\"type\":\"deregisterInstance\",\"instance\":{\"port\":0,\"weight\":1.0,\"healthy\":true,"
                 + "\"enabled\":true,\"ephemeral\":true,\"metadata\":{},\"instanceIdGenerator\":\"simple\","

api/src/test/java/com/alibaba/nacos/api/naming/remote/request/NotifySubscriberRequestTest.java

@@ -21,14 +21,14 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
 import static com.alibaba.nacos.api.common.Constants.Naming.NAMING_MODULE;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class NotifySubscriberRequestTest {
+class NotifySubscriberRequestTest {
     
     private static final String SERVICE = "service";
     
@@ -38,15 +38,15 @@ public class NotifySubscriberRequestTest {
     
     private static ObjectMapper mapper;
     
-    @BeforeClass
-    public static void setUp() throws Exception {
+    @BeforeAll
+    static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         ServiceInfo serviceInfo = new ServiceInfo(GROUP + "@@" + SERVICE);
         NotifySubscriberRequest request = NotifySubscriberRequest.buildNotifySubscriberRequest(serviceInfo);
         request.setServiceName(SERVICE);
@@ -58,7 +58,7 @@ public class NotifySubscriberRequestTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"headers\":{},\"namespace\":\"namespace\",\"serviceName\":\"service\",\"groupName\":\"group\","
                 + "\"serviceInfo\":{\"name\":\"service\",\"groupName\":\"group\",\"cacheMillis\":1000,\"hosts\":[],"
                 + "\"lastRefTime\":0,\"checksum\":\"\",\"allIPs\":false,\"reachProtectionThreshold\":false,"

api/src/test/java/com/alibaba/nacos/api/naming/remote/request/PersistentInstanceRequestTest.java

@@ -19,15 +19,15 @@ package com.alibaba.nacos.api.naming.remote.request;
 import com.alibaba.nacos.api.naming.pojo.Instance;
 import com.alibaba.nacos.api.naming.remote.NamingRemoteConstants;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class PersistentInstanceRequestTest extends BasedNamingRequestTest {
+class PersistentInstanceRequestTest extends BasedNamingRequestTest {
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         PersistentInstanceRequest request = new PersistentInstanceRequest(NAMESPACE, SERVICE, GROUP,
                 NamingRemoteConstants.REGISTER_INSTANCE, new Instance());
         String json = mapper.writeValueAsString(request);
@@ -37,7 +37,7 @@ public class PersistentInstanceRequestTest extends BasedNamingRequestTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"headers\":{},\"namespace\":\"namespace\",\"serviceName\":\"service\",\"groupName\":\"group\","
                 + "\"type\":\"deregisterInstance\",\"instance\":{\"port\":0,\"weight\":1.0,\"healthy\":true,"
                 + "\"enabled\":true,\"ephemeral\":true,\"metadata\":{},\"instanceIdGenerator\":\"simple\","

api/src/test/java/com/alibaba/nacos/api/naming/remote/request/ServiceListRequestTest.java

@@ -17,16 +17,16 @@
 package com.alibaba.nacos.api.naming.remote.request;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import static com.alibaba.nacos.api.common.Constants.Naming.NAMING_MODULE;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ServiceListRequestTest extends BasedNamingRequestTest {
+class ServiceListRequestTest extends BasedNamingRequestTest {
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         ServiceListRequest request = new ServiceListRequest(NAMESPACE, GROUP, 1, 10);
         request.setSelector("label");
         String json = mapper.writeValueAsString(request);
@@ -39,7 +39,7 @@ public class ServiceListRequestTest extends BasedNamingRequestTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"headers\":{},\"namespace\":\"namespace\",\"serviceName\":\"\",\"groupName\":\"group\","
                 + "\"pageNo\":1,\"pageSize\":10,\"selector\":\"label\",\"module\":\"naming\"}";
         ServiceListRequest actual = mapper.readValue(json, ServiceListRequest.class);

api/src/test/java/com/alibaba/nacos/api/naming/remote/request/ServiceQueryRequestTest.java

@@ -18,15 +18,15 @@ package com.alibaba.nacos.api.naming.remote.request;
 
 import com.alibaba.nacos.api.common.Constants;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ServiceQueryRequestTest extends BasedNamingRequestTest {
+class ServiceQueryRequestTest extends BasedNamingRequestTest {
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         ServiceQueryRequest request = new ServiceQueryRequest(NAMESPACE, SERVICE, GROUP);
         request.setCluster(Constants.DEFAULT_CLUSTER_NAME);
         String json = mapper.writeValueAsString(request);
@@ -37,7 +37,7 @@ public class ServiceQueryRequestTest extends BasedNamingRequestTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"headers\":{},\"namespace\":\"namespace\",\"serviceName\":\"service\",\"groupName\":\"group\","
                 + "\"cluster\":\"DEFAULT\",\"healthyOnly\":true,\"udpPort\":0,\"module\":\"naming\"}";
         ServiceQueryRequest actual = mapper.readValue(json, ServiceQueryRequest.class);

api/src/test/java/com/alibaba/nacos/api/naming/remote/request/SubscribeServiceRequestTest.java

@@ -17,16 +17,16 @@
 package com.alibaba.nacos.api.naming.remote.request;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class SubscribeServiceRequestTest extends BasedNamingRequestTest {
+class SubscribeServiceRequestTest extends BasedNamingRequestTest {
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         SubscribeServiceRequest request = new SubscribeServiceRequest(NAMESPACE, GROUP, SERVICE, "", true);
         String json = mapper.writeValueAsString(request);
         checkSerializeBasedInfo(json);
@@ -35,7 +35,7 @@ public class SubscribeServiceRequestTest extends BasedNamingRequestTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"headers\":{},\"namespace\":\"namespace\",\"serviceName\":\"service\",\"groupName\":\"group\","
                 + "\"subscribe\":false,\"clusters\":\"aa,bb\",\"module\":\"naming\"}";
         SubscribeServiceRequest actual = mapper.readValue(json, SubscribeServiceRequest.class);

api/src/test/java/com/alibaba/nacos/api/naming/remote/response/BatchInstanceResponseTest.java

@@ -21,32 +21,32 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class BatchInstanceResponseTest {
+class BatchInstanceResponseTest {
     
     protected static ObjectMapper mapper;
     
-    @BeforeClass
-    public static void setUp() throws Exception {
+    @BeforeAll
+    static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         BatchInstanceResponse response = new BatchInstanceResponse(NamingRemoteConstants.REGISTER_INSTANCE);
         String json = mapper.writeValueAsString(response);
         assertTrue(json.contains("\"type\":\"" + NamingRemoteConstants.REGISTER_INSTANCE + "\""));
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"resultCode\":200,\"errorCode\":0,\"type\":\"registerInstance\",\"success\":true}";
         BatchInstanceResponse response = mapper.readValue(json, BatchInstanceResponse.class);
         assertEquals(NamingRemoteConstants.REGISTER_INSTANCE, response.getType());

api/src/test/java/com/alibaba/nacos/api/naming/remote/response/InstanceResponseTest.java

@@ -21,32 +21,32 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class InstanceResponseTest {
+class InstanceResponseTest {
     
     protected static ObjectMapper mapper;
     
-    @BeforeClass
-    public static void setUp() throws Exception {
+    @BeforeAll
+    static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         InstanceResponse response = new InstanceResponse(NamingRemoteConstants.REGISTER_INSTANCE);
         String json = mapper.writeValueAsString(response);
         assertTrue(json.contains("\"type\":\"" + NamingRemoteConstants.REGISTER_INSTANCE + "\""));
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"resultCode\":200,\"errorCode\":0,\"type\":\"deregisterInstance\",\"success\":true}";
         InstanceResponse response = mapper.readValue(json, InstanceResponse.class);
         assertEquals(NamingRemoteConstants.DE_REGISTER_INSTANCE, response.getType());

api/src/test/java/com/alibaba/nacos/api/naming/remote/response/QueryServiceResponseTest.java

@@ -21,25 +21,25 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class QueryServiceResponseTest {
+class QueryServiceResponseTest {
     
     protected static ObjectMapper mapper;
     
-    @BeforeClass
-    public static void setUp() throws Exception {
+    @BeforeAll
+    static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerializeSuccessResponse() throws JsonProcessingException {
+    void testSerializeSuccessResponse() throws JsonProcessingException {
         QueryServiceResponse response = QueryServiceResponse.buildSuccessResponse(new ServiceInfo());
         String json = mapper.writeValueAsString(response);
         assertTrue(json.contains("\"serviceInfo\":{"));
@@ -49,7 +49,7 @@ public class QueryServiceResponseTest {
     }
     
     @Test
-    public void testSerializeFailResponse() throws JsonProcessingException {
+    void testSerializeFailResponse() throws JsonProcessingException {
         QueryServiceResponse response = QueryServiceResponse.buildFailResponse("test");
         String json = mapper.writeValueAsString(response);
         assertTrue(json.contains("\"resultCode\":500"));
@@ -59,7 +59,7 @@ public class QueryServiceResponseTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"resultCode\":200,\"errorCode\":0,\"serviceInfo\":{\"cacheMillis\":1000,\"hosts\":[],"
                 + "\"lastRefTime\":0,\"checksum\":\"\",\"allIPs\":false,\"reachProtectionThreshold\":false,"
                 + "\"valid\":true},\"success\":true}";

api/src/test/java/com/alibaba/nacos/api/naming/remote/response/ServiceListResponseTest.java

@@ -20,27 +20,27 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ServiceListResponseTest {
+class ServiceListResponseTest {
     
     protected static ObjectMapper mapper;
     
-    @BeforeClass
-    public static void setUp() throws Exception {
+    @BeforeAll
+    static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerializeSuccessResponse() throws JsonProcessingException {
+    void testSerializeSuccessResponse() throws JsonProcessingException {
         ServiceListResponse response = ServiceListResponse.buildSuccessResponse(10, Collections.singletonList("a"));
         String json = mapper.writeValueAsString(response);
         assertTrue(json.contains("\"count\":10"));
@@ -51,7 +51,7 @@ public class ServiceListResponseTest {
     }
     
     @Test
-    public void testSerializeFailResponse() throws JsonProcessingException {
+    void testSerializeFailResponse() throws JsonProcessingException {
         ServiceListResponse response = ServiceListResponse.buildFailResponse("test");
         String json = mapper.writeValueAsString(response);
         assertTrue(json.contains("\"resultCode\":500"));
@@ -61,7 +61,7 @@ public class ServiceListResponseTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"resultCode\":200,\"errorCode\":0,\"count\":10,\"serviceNames\":[\"a\"],\"success\":true}";
         ServiceListResponse response = mapper.readValue(json, ServiceListResponse.class);
         assertEquals(10, response.getCount());

api/src/test/java/com/alibaba/nacos/api/naming/remote/response/SubscribeServiceResponseTest.java

@@ -21,25 +21,25 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class SubscribeServiceResponseTest {
+class SubscribeServiceResponseTest {
     
     protected static ObjectMapper mapper;
     
-    @BeforeClass
-    public static void setUp() throws Exception {
+    @BeforeAll
+    static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerializeSuccessResponse() throws JsonProcessingException {
+    void testSerializeSuccessResponse() throws JsonProcessingException {
         SubscribeServiceResponse response = new SubscribeServiceResponse(200, null, new ServiceInfo());
         String json = mapper.writeValueAsString(response);
         assertTrue(json.contains("\"serviceInfo\":{"));
@@ -49,7 +49,7 @@ public class SubscribeServiceResponseTest {
     }
     
     @Test
-    public void testSerializeFailResponse() throws JsonProcessingException {
+    void testSerializeFailResponse() throws JsonProcessingException {
         SubscribeServiceResponse response = new SubscribeServiceResponse(500, "test", null);
         String json = mapper.writeValueAsString(response);
         assertTrue(json.contains("\"resultCode\":500"));
@@ -59,7 +59,7 @@ public class SubscribeServiceResponseTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"resultCode\":200,\"errorCode\":0,\"serviceInfo\":{\"cacheMillis\":1000,\"hosts\":[],"
                 + "\"lastRefTime\":0,\"checksum\":\"\",\"allIPs\":false,\"reachProtectionThreshold\":false,"
                 + "\"valid\":true},\"success\":true}";

api/src/test/java/com/alibaba/nacos/api/naming/utils/NamingUtilsTest.java

@@ -21,107 +21,117 @@ import com.alibaba.nacos.api.exception.NacosException;
 import com.alibaba.nacos.api.naming.PreservedMetadataKeys;
 import com.alibaba.nacos.api.naming.pojo.Instance;
 import com.alibaba.nacos.api.utils.StringUtils;
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class NamingUtilsTest {
+class NamingUtilsTest {
     
     @Test
-    public void testGetGroupedName() {
+    void testGetGroupedName() {
         assertEquals("group@@serviceName", NamingUtils.getGroupedName("serviceName", "group"));
     }
     
-    @Test(expected = IllegalArgumentException.class)
-    public void testGetGroupedNameWithoutGroup() {
-        NamingUtils.getGroupedName("serviceName", "");
-    }
-    
-    @Test(expected = IllegalArgumentException.class)
-    public void testGetGroupedNameWithoutServiceName() {
-        NamingUtils.getGroupedName("", "group");
+    @Test
+    void testGetGroupedNameWithoutGroup() {
+        assertThrows(IllegalArgumentException.class, () -> {
+            NamingUtils.getGroupedName("serviceName", "");
+        });
     }
     
     @Test
-    public void testGetServiceName() {
+    void testGetGroupedNameWithoutServiceName() {
+        assertThrows(IllegalArgumentException.class, () -> {
+            NamingUtils.getGroupedName("", "group");
+        });
+    }
+    
+    @Test
+    void testGetServiceName() {
         String validServiceName = "group@@serviceName";
         assertEquals("serviceName", NamingUtils.getServiceName(validServiceName));
     }
     
     @Test
-    public void testGetServiceNameWithoutGroup() {
+    void testGetServiceNameWithoutGroup() {
         String serviceName = "serviceName";
         assertEquals(serviceName, NamingUtils.getServiceName(serviceName));
     }
     
     @Test
-    public void testGetServiceNameWithEmpty() {
+    void testGetServiceNameWithEmpty() {
         assertEquals(StringUtils.EMPTY, NamingUtils.getServiceName(null));
     }
     
     @Test
-    public void testGetGroupName() {
+    void testGetGroupName() {
         String validServiceName = "group@@serviceName";
         assertEquals("group", NamingUtils.getGroupName(validServiceName));
     }
     
     @Test
-    public void testGetGroupNameWithoutGroup() {
+    void testGetGroupNameWithoutGroup() {
         String serviceName = "serviceName";
         assertEquals(Constants.DEFAULT_GROUP, NamingUtils.getGroupName(serviceName));
     }
     
     @Test
-    public void testGetGroupNameWithEmpty() {
+    void testGetGroupNameWithEmpty() {
         assertEquals(StringUtils.EMPTY, NamingUtils.getGroupName(null));
     }
     
     @Test
-    public void testIsServiceNameCompatibilityMode() {
+    void testIsServiceNameCompatibilityMode() {
         String serviceName1 = "group@@serviceName";
         assertTrue(NamingUtils.isServiceNameCompatibilityMode(serviceName1));
-    
+        
         String serviceName2 = "serviceName";
         assertFalse(NamingUtils.isServiceNameCompatibilityMode(serviceName2));
-    
+        
         String serviceName3 = null;
         assertFalse(NamingUtils.isServiceNameCompatibilityMode(serviceName3));
     }
     
     @Test
-    public void testCheckServiceNameFormat() {
+    void testCheckServiceNameFormat() {
         String validServiceName = "group@@serviceName";
         NamingUtils.checkServiceNameFormat(validServiceName);
     }
     
-    @Test(expected = IllegalArgumentException.class)
-    public void testCheckServiceNameFormatWithoutGroupAndService() {
-        String validServiceName = "@@";
-        NamingUtils.checkServiceNameFormat(validServiceName);
-    }
-    
-    @Test(expected = IllegalArgumentException.class)
-    public void testCheckServiceNameFormatWithoutGroup() {
-        String validServiceName = "@@service";
-        NamingUtils.checkServiceNameFormat(validServiceName);
-    }
-    
-    @Test(expected = IllegalArgumentException.class)
-    public void testCheckServiceNameFormatWithoutService() {
-        String validServiceName = "group@@";
-        NamingUtils.checkServiceNameFormat(validServiceName);
+    @Test
+    void testCheckServiceNameFormatWithoutGroupAndService() {
+        assertThrows(IllegalArgumentException.class, () -> {
+            String validServiceName = "@@";
+            NamingUtils.checkServiceNameFormat(validServiceName);
+        });
     }
     
     @Test
-    public void testGetGroupedNameOptional() {
+    void testCheckServiceNameFormatWithoutGroup() {
+        assertThrows(IllegalArgumentException.class, () -> {
+            String validServiceName = "@@service";
+            NamingUtils.checkServiceNameFormat(validServiceName);
+        });
+    }
+    
+    @Test
+    void testCheckServiceNameFormatWithoutService() {
+        assertThrows(IllegalArgumentException.class, () -> {
+            String validServiceName = "group@@";
+            NamingUtils.checkServiceNameFormat(validServiceName);
+        });
+    }
+    
+    @Test
+    void testGetGroupedNameOptional() {
         String onlyGroupName = NamingUtils.getGroupedNameOptional(StringUtils.EMPTY, "groupA");
         assertEquals("groupA@@", onlyGroupName);
         
@@ -133,7 +143,7 @@ public class NamingUtilsTest {
     }
     
     @Test
-    public void testCheckInstanceIsLegal() throws NacosException {
+    void testCheckInstanceIsLegal() throws NacosException {
         // check invalid clusterName
         Instance instance = new Instance();
         instance.setClusterName("cluster1,cluster2");
@@ -151,7 +161,7 @@ public class NamingUtilsTest {
         instance.setClusterName("cluster1");
         NamingUtils.checkInstanceIsLegal(instance);
         assertTrue(true);
-    
+        
         // check heartBeatTimeout, heartBeatInterval, ipDeleteTimeout
         Map<String, String> meta = new HashMap<>();
         meta.put(PreservedMetadataKeys.HEART_BEAT_TIMEOUT, "1");
@@ -163,8 +173,7 @@ public class NamingUtilsTest {
             assertTrue(false);
         } catch (Exception e) {
             assertTrue(e instanceof NacosException);
-            assertEquals(
-                    "Instance 'heart beat interval' must less than 'heart beat timeout' and 'ip delete timeout'.",
+            assertEquals("Instance 'heart beat interval' must less than 'heart beat timeout' and 'ip delete timeout'.",
                     e.getMessage());
         }
         meta.put(PreservedMetadataKeys.HEART_BEAT_TIMEOUT, "3");
@@ -175,7 +184,7 @@ public class NamingUtilsTest {
     }
     
     @Test
-    public void testBatchCheckInstanceIsLegal() throws NacosException {
+    void testBatchCheckInstanceIsLegal() throws NacosException {
         // check invalid clusterName
         Instance instance = new Instance();
         instance.setClusterName("cluster1,cluster2");
@@ -212,8 +221,7 @@ public class NamingUtilsTest {
             assertTrue(false);
         } catch (Exception e) {
             assertTrue(e instanceof NacosException);
-            assertEquals(
-                    "Instance 'heart beat interval' must less than 'heart beat timeout' and 'ip delete timeout'.",
+            assertEquals("Instance 'heart beat interval' must less than 'heart beat timeout' and 'ip delete timeout'.",
                     e.getMessage());
         }
         instanceList.remove(instance);
@@ -228,7 +236,7 @@ public class NamingUtilsTest {
     }
     
     @Test
-    public void testCheckInstanceIsEphemeral() throws NacosException {
+    void testCheckInstanceIsEphemeral() throws NacosException {
         Instance instance = new Instance();
         instance.setIp("127.0.0.1");
         instance.setPort(9089);
@@ -241,12 +249,12 @@ public class NamingUtilsTest {
             instance.setEphemeral(false);
             NamingUtils.checkInstanceIsEphemeral(instance);
         } catch (NacosException e) {
-            Assert.assertEquals(e.getErrCode(), NacosException.INVALID_PARAM);
+            assertEquals(NacosException.INVALID_PARAM, e.getErrCode());
         }
     }
-
+    
     @Test
-    public void testCheckInstanceIsNull() throws NacosException {
+    void testCheckInstanceIsNull() throws NacosException {
         Instance instance = new Instance();
         instance.setIp("127.0.0.1");
         instance.setPort(9089);
@@ -254,15 +262,15 @@ public class NamingUtilsTest {
         try {
             NamingUtils.checkInstanceIsLegal(null);
         } catch (NacosException e) {
-            Assert.assertEquals(e.getErrCode(), NacosException.INVALID_PARAM);
+            assertEquals(NacosException.INVALID_PARAM, e.getErrCode());
         }
     }
     
     @Test
-    public void testIsNumber() {
+    void testIsNumber() {
         String str1 = "abc";
-        assertTrue(!NamingUtils.isNumber(str1));
-    
+        assertFalse(NamingUtils.isNumber(str1));
+        
         String str2 = "123456";
         assertTrue(NamingUtils.isNumber(str2));
     }

api/src/test/java/com/alibaba/nacos/api/remote/AbstractPushCallBackTest.java

@@ -16,18 +16,18 @@
 
 package com.alibaba.nacos.api.remote;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class AbstractPushCallBackTest {
+class AbstractPushCallBackTest {
     
     boolean testValue;
     
     @Test
-    public void testAbstractPushCallBack() {
+    void testAbstractPushCallBack() {
         AbstractPushCallBack callBack = new AbstractPushCallBack(2000) {
             
             @Override

api/src/test/java/com/alibaba/nacos/api/remote/AbstractRequestCallBackTest.java

@@ -18,20 +18,20 @@ package com.alibaba.nacos.api.remote;
 
 import com.alibaba.nacos.api.remote.response.ErrorResponse;
 import com.alibaba.nacos.api.remote.response.Response;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.concurrent.Executor;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class AbstractRequestCallBackTest {
+class AbstractRequestCallBackTest {
     
     boolean testValue;
     
     @Test
-    public void testAbstractPushCallBack() {
+    void testAbstractPushCallBack() {
         AbstractRequestCallBack callBack = new AbstractRequestCallBack() {
             @Override
             public Executor getExecutor() {

api/src/test/java/com/alibaba/nacos/api/remote/DefaultRequestFutureTest.java

@@ -17,27 +17,28 @@
 package com.alibaba.nacos.api.remote;
 
 import com.alibaba.nacos.api.remote.response.Response;
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.Mock;
-import org.mockito.junit.MockitoJUnitRunner;
+import org.mockito.junit.jupiter.MockitoExtension;
 
 import java.util.concurrent.Executor;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.verify;
 
-@RunWith(MockitoJUnitRunner.class)
-public class DefaultRequestFutureTest {
+@ExtendWith(MockitoExtension.class)
+class DefaultRequestFutureTest {
     
     private static final String CONNECTION_ID = "1233_1.1.1.1_3306";
     
@@ -51,17 +52,17 @@ public class DefaultRequestFutureTest {
     
     private long timestamp;
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         timestamp = System.currentTimeMillis();
     }
     
-    @After
-    public void tearDown() throws Exception {
+    @AfterEach
+    void tearDown() throws Exception {
     }
     
     @Test
-    public void testSyncGetResponseSuccessWithoutTimeout() throws InterruptedException {
+    void testSyncGetResponseSuccessWithoutTimeout() throws InterruptedException {
         DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID);
         new Thread(() -> {
             try {
@@ -79,7 +80,7 @@ public class DefaultRequestFutureTest {
     }
     
     @Test
-    public void testSyncGetResponseFailureWithoutTimeout() throws InterruptedException {
+    void testSyncGetResponseFailureWithoutTimeout() throws InterruptedException {
         DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID);
         new Thread(() -> {
             try {
@@ -97,7 +98,7 @@ public class DefaultRequestFutureTest {
     }
     
     @Test
-    public void testSyncGetResponseSuccessWithTimeout() throws InterruptedException, TimeoutException {
+    void testSyncGetResponseSuccessWithTimeout() throws InterruptedException, TimeoutException {
         DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID);
         new Thread(() -> {
             try {
@@ -115,7 +116,7 @@ public class DefaultRequestFutureTest {
     }
     
     @Test
-    public void testSyncGetResponseSuccessWithInvalidTimeout() throws InterruptedException, TimeoutException {
+    void testSyncGetResponseSuccessWithInvalidTimeout() throws InterruptedException, TimeoutException {
         DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID);
         new Thread(() -> {
             try {
@@ -132,14 +133,16 @@ public class DefaultRequestFutureTest {
         assertTrue(requestFuture.getTimeStamp() >= timestamp);
     }
     
-    @Test(expected = TimeoutException.class)
-    public void testSyncGetResponseFailureWithTimeout() throws InterruptedException, TimeoutException {
-        DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID);
-        requestFuture.get(100L);
+    @Test
+    void testSyncGetResponseFailureWithTimeout() throws InterruptedException, TimeoutException {
+        assertThrows(TimeoutException.class, () -> {
+            DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID);
+            requestFuture.get(100L);
+        });
     }
     
     @Test
-    public void testSyncGetResponseSuccessByTriggerWithoutTimeout() throws InterruptedException {
+    void testSyncGetResponseSuccessByTriggerWithoutTimeout() throws InterruptedException {
         MockTimeoutInnerTrigger trigger = new MockTimeoutInnerTrigger();
         DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID, null, trigger);
         new Thread(() -> {
@@ -159,7 +162,7 @@ public class DefaultRequestFutureTest {
     }
     
     @Test
-    public void testSyncGetResponseFailureByTriggerWithoutTimeout() throws InterruptedException {
+    void testSyncGetResponseFailureByTriggerWithoutTimeout() throws InterruptedException {
         MockTimeoutInnerTrigger trigger = new MockTimeoutInnerTrigger();
         DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID, null, trigger);
         new Thread(() -> {
@@ -179,7 +182,7 @@ public class DefaultRequestFutureTest {
     }
     
     @Test
-    public void testSyncGetResponseSuccessByTriggerWithTimeout() throws InterruptedException, TimeoutException {
+    void testSyncGetResponseSuccessByTriggerWithTimeout() throws InterruptedException, TimeoutException {
         MockTimeoutInnerTrigger trigger = new MockTimeoutInnerTrigger();
         DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID, null, trigger);
         new Thread(() -> {
@@ -198,19 +201,21 @@ public class DefaultRequestFutureTest {
         assertFalse(trigger.isTimeout);
     }
     
-    @Test(expected = TimeoutException.class)
-    public void testSyncGetResponseFailureByTriggerWithTimeout() throws InterruptedException, TimeoutException {
-        MockTimeoutInnerTrigger trigger = new MockTimeoutInnerTrigger();
-        DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID, null, trigger);
-        try {
-            requestFuture.get(100L);
-        } finally {
-            assertTrue(trigger.isTimeout);
-        }
+    @Test
+    void testSyncGetResponseFailureByTriggerWithTimeout() throws InterruptedException, TimeoutException {
+        assertThrows(TimeoutException.class, () -> {
+            MockTimeoutInnerTrigger trigger = new MockTimeoutInnerTrigger();
+            DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID, null, trigger);
+            try {
+                requestFuture.get(100L);
+            } finally {
+                assertTrue(trigger.isTimeout);
+            }
+        });
     }
     
     @Test
-    public void testASyncGetResponseSuccessWithoutTimeout() throws InterruptedException {
+    void testASyncGetResponseSuccessWithoutTimeout() throws InterruptedException {
         MockTimeoutInnerTrigger trigger = new MockTimeoutInnerTrigger();
         MockRequestCallback callback = new MockRequestCallback(200L);
         DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID, callback, trigger);
@@ -229,7 +234,7 @@ public class DefaultRequestFutureTest {
     }
     
     @Test
-    public void testASyncGetResponseSuccessWithoutTimeoutByExecutor() throws InterruptedException {
+    void testASyncGetResponseSuccessWithoutTimeoutByExecutor() throws InterruptedException {
         MockTimeoutInnerTrigger trigger = new MockTimeoutInnerTrigger();
         MockRequestCallback callback = new MockRequestCallback(executor, 200L);
         DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID, callback, trigger);
@@ -246,7 +251,7 @@ public class DefaultRequestFutureTest {
     }
     
     @Test
-    public void testASyncGetResponseFailureWithoutTimeout() throws InterruptedException {
+    void testASyncGetResponseFailureWithoutTimeout() throws InterruptedException {
         MockTimeoutInnerTrigger trigger = new MockTimeoutInnerTrigger();
         MockRequestCallback callback = new MockRequestCallback(1000L);
         DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID, callback, trigger);
@@ -265,10 +270,11 @@ public class DefaultRequestFutureTest {
     }
     
     @Test
-    public void testASyncGetResponseFailureWithTimeout() throws InterruptedException {
+    void testASyncGetResponseFailureWithTimeout() throws InterruptedException {
         MockTimeoutInnerTrigger trigger = new MockTimeoutInnerTrigger();
         MockRequestCallback callback = new MockRequestCallback(100L);
-        final DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID, callback, trigger);
+        final DefaultRequestFuture requestFuture = new DefaultRequestFuture(CONNECTION_ID, REQUEST_ID, callback,
+                trigger);
         TimeUnit.MILLISECONDS.sleep(500);
         assertNull(callback.response);
         assertTrue(callback.exception instanceof TimeoutException);

api/src/test/java/com/alibaba/nacos/api/remote/RpcScheduledExecutorTest.java

@@ -16,24 +16,24 @@
 
 package com.alibaba.nacos.api.remote;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class RpcScheduledExecutorTest {
+class RpcScheduledExecutorTest {
     
     private static final String NAME = "test.rpc.thread";
     
     Map<String, String> threadNameMap = new ConcurrentHashMap<>();
     
     @Test
-    public void testRpcScheduledExecutor() throws InterruptedException {
+    void testRpcScheduledExecutor() throws InterruptedException {
         RpcScheduledExecutor executor = new RpcScheduledExecutor(2, NAME);
         CountDownLatch latch = new CountDownLatch(2);
         executor.submit(new TestRunner(1, latch));

api/src/test/java/com/alibaba/nacos/api/remote/ability/ClientRemoteAbilityTest.java

@@ -20,32 +20,32 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ClientRemoteAbilityTest {
+class ClientRemoteAbilityTest {
     
     private static ObjectMapper mapper;
     
-    @BeforeClass
-    public static void setUp() throws Exception {
+    @BeforeAll
+    static void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         ClientRemoteAbility abilities = new ClientRemoteAbility();
         String json = mapper.writeValueAsString(abilities);
         assertEquals("{\"supportRemoteConnection\":false}", json);
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"supportRemoteConnection\":true}";
         ClientRemoteAbility abilities = mapper.readValue(json, ClientRemoteAbility.class);
         assertTrue(abilities.isSupportRemoteConnection());

api/src/test/java/com/alibaba/nacos/api/remote/ability/ServerRemoteAbilityTest.java

@@ -20,37 +20,37 @@ import com.alibaba.nacos.api.ability.ClientAbilities;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.MapperFeature;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ServerRemoteAbilityTest {
+class ServerRemoteAbilityTest {
     
     private static ObjectMapper mapper;
     
     private ServerRemoteAbility serverAbilities;
     
-    @BeforeClass
-    public static void setUpBeforeClass() throws Exception {
+    @BeforeAll
+    static void setUpBeforeClass() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
         mapper.enable(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY);
     }
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         serverAbilities = new ServerRemoteAbility();
     }
     
     @Test
-    public void testSerialize() throws JsonProcessingException {
+    void testSerialize() throws JsonProcessingException {
         serverAbilities = new ServerRemoteAbility();
         String json = mapper.writeValueAsString(serverAbilities);
         assertTrue(json.contains("\"supportRemoteConnection\":false"));
@@ -58,7 +58,7 @@ public class ServerRemoteAbilityTest {
     }
     
     @Test
-    public void testDeserialize() throws JsonProcessingException {
+    void testDeserialize() throws JsonProcessingException {
         String json = "{\"supportRemoteConnection\":true,\"grpcReportEnabled\":true}";
         ServerRemoteAbility abilities = mapper.readValue(json, ServerRemoteAbility.class);
         assertTrue(abilities.isSupportRemoteConnection());
@@ -66,10 +66,10 @@ public class ServerRemoteAbilityTest {
     }
     
     @Test
-    public void testEqualsAndHashCode() {
+    void testEqualsAndHashCode() {
         assertEquals(serverAbilities, serverAbilities);
         assertEquals(serverAbilities.hashCode(), serverAbilities.hashCode());
-        assertNotEquals(serverAbilities, null);
+        assertNotEquals(null, serverAbilities);
         assertNotEquals(serverAbilities, new ClientAbilities());
         ServerRemoteAbility test = new ServerRemoteAbility();
         assertEquals(serverAbilities, test);

api/src/test/java/com/alibaba/nacos/api/remote/request/BasicRequestTest.java

@@ -19,13 +19,13 @@ package com.alibaba.nacos.api.remote.request;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
+import org.junit.jupiter.api.BeforeEach;
 
 public abstract class BasicRequestTest {
     
     protected ObjectMapper mapper;
     
-    @Before
+    @BeforeEach
     public void setUp() throws Exception {
         mapper = new ObjectMapper();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);

api/src/test/java/com/alibaba/nacos/api/remote/request/ConnectResetRequestTest.java

@@ -16,35 +16,38 @@
 
 package com.alibaba.nacos.api.remote.request;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class ConnectResetRequestTest extends BasicRequestTest {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class ConnectResetRequestTest extends BasicRequestTest {
     
     @Test
-    public void testSerialize() throws Exception {
+    void testSerialize() throws Exception {
         ConnectResetRequest request = new ConnectResetRequest();
         request.setServerIp("127.0.0.1");
         request.setServerPort("8888");
         request.setRequestId("1");
         request.setConnectionId("11111_127.0.0.1_8888");
         String json = mapper.writeValueAsString(request);
-        Assert.assertNotNull(json);
-        Assert.assertTrue(json.contains("\"serverIp\":\"127.0.0.1\""));
-        Assert.assertTrue(json.contains("\"serverPort\":\"8888\""));
-        Assert.assertTrue(json.contains("\"module\":\"internal\""));
-        Assert.assertTrue(json.contains("\"requestId\":\"1\""));
-        Assert.assertTrue(json.contains("\"connectionId\":\"11111_127.0.0.1_8888\""));
+        assertNotNull(json);
+        assertTrue(json.contains("\"serverIp\":\"127.0.0.1\""));
+        assertTrue(json.contains("\"serverPort\":\"8888\""));
+        assertTrue(json.contains("\"module\":\"internal\""));
+        assertTrue(json.contains("\"requestId\":\"1\""));
+        assertTrue(json.contains("\"connectionId\":\"11111_127.0.0.1_8888\""));
     }
     
     @Test
-    public void testDeserialize() throws Exception {
+    void testDeserialize() throws Exception {
         String json = "{\"headers\":{},\"requestId\":\"1\",\"serverIp\":\"127.0.0.1\",\"serverPort\":\"8888\","
                 + "\"module\":\"internal\",\"connectionId\":\"11111_127.0.0.1_8888\"}";
         ConnectResetRequest result = mapper.readValue(json, ConnectResetRequest.class);
-        Assert.assertNotNull(result);
-        Assert.assertEquals("127.0.0.1", result.getServerIp());
-        Assert.assertEquals("8888", result.getServerPort());
-        Assert.assertEquals("11111_127.0.0.1_8888", result.getConnectionId());
+        assertNotNull(result);
+        assertEquals("127.0.0.1", result.getServerIp());
+        assertEquals("8888", result.getServerPort());
+        assertEquals("11111_127.0.0.1_8888", result.getConnectionId());
     }
 }

api/src/test/java/com/alibaba/nacos/api/remote/request/ConnectionSetupRequestTest.java

@@ -16,16 +16,19 @@
 
 package com.alibaba.nacos.api.remote.request;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 import java.util.HashMap;
 
-public class ConnectionSetupRequestTest extends BasicRequestTest {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class ConnectionSetupRequestTest extends BasicRequestTest {
     
     @Test
-    public void testSerialize() throws Exception {
+    void testSerialize() throws Exception {
         ConnectionSetupRequest request = new ConnectionSetupRequest();
         request.setClientVersion("2.2.2");
         request.setAbilityTable(new HashMap<>());
@@ -33,27 +36,28 @@ public class ConnectionSetupRequestTest extends BasicRequestTest {
         request.setLabels(Collections.singletonMap("labelKey", "labelValue"));
         request.setRequestId("1");
         String json = mapper.writeValueAsString(request);
-        Assert.assertNotNull(json);
-        Assert.assertTrue(json.contains("\"clientVersion\":\"2.2.2\""));
-        Assert.assertTrue(json.contains("\"tenant\":\"testNamespaceId\""));
-        Assert.assertTrue(json.contains("\"labels\":{\"labelKey\":\"labelValue\"}"));
-        Assert.assertTrue(json.contains("\"abilityTable\":{"));
-        Assert.assertTrue(json.contains("\"module\":\"internal\""));
-        Assert.assertTrue(json.contains("\"requestId\":\"1\""));
+        assertNotNull(json);
+        assertTrue(json.contains("\"clientVersion\":\"2.2.2\""));
+        assertTrue(json.contains("\"tenant\":\"testNamespaceId\""));
+        assertTrue(json.contains("\"labels\":{\"labelKey\":\"labelValue\"}"));
+        assertTrue(json.contains("\"abilityTable\":{"));
+        assertTrue(json.contains("\"module\":\"internal\""));
+        assertTrue(json.contains("\"requestId\":\"1\""));
     }
     
     @Test
-    public void testDeserialize() throws Exception {
-        String json = "{\"headers\":{},\"requestId\":\"1\",\"clientVersion\":\"2.2.2\",\"abilities\":{\"remoteAbility\":"
-                + "{\"supportRemoteConnection\":false},\"configAbility\":{\"supportRemoteMetrics\":false},"
-                + "\"namingAbility\":{\"supportDeltaPush\":false,\"supportRemoteMetric\":false}},\"tenant\":\"testNamespaceId\","
-                + "\"labels\":{\"labelKey\":\"labelValue\"},\"module\":\"internal\"}";
+    void testDeserialize() throws Exception {
+        String json =
+                "{\"headers\":{},\"requestId\":\"1\",\"clientVersion\":\"2.2.2\",\"abilities\":{\"remoteAbility\":"
+                        + "{\"supportRemoteConnection\":false},\"configAbility\":{\"supportRemoteMetrics\":false},"
+                        + "\"namingAbility\":{\"supportDeltaPush\":false,\"supportRemoteMetric\":false}},\"tenant\":\"testNamespaceId\","
+                        + "\"labels\":{\"labelKey\":\"labelValue\"},\"module\":\"internal\"}";
         ConnectionSetupRequest result = mapper.readValue(json, ConnectionSetupRequest.class);
-        Assert.assertNotNull(result);
-        Assert.assertEquals("2.2.2", result.getClientVersion());
-        Assert.assertEquals("testNamespaceId", result.getTenant());
-        Assert.assertEquals(1, result.getLabels().size());
-        Assert.assertEquals("labelValue", result.getLabels().get("labelKey"));
-        Assert.assertEquals("1", result.getRequestId());
+        assertNotNull(result);
+        assertEquals("2.2.2", result.getClientVersion());
+        assertEquals("testNamespaceId", result.getTenant());
+        assertEquals(1, result.getLabels().size());
+        assertEquals("labelValue", result.getLabels().get("labelKey"));
+        assertEquals("1", result.getRequestId());
     }
 }

api/src/test/java/com/alibaba/nacos/api/remote/request/EmptyContentRequestTest.java

@@ -19,19 +19,19 @@ package com.alibaba.nacos.api.remote.request;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class EmptyContentRequestTest extends BasicRequestTest {
+class EmptyContentRequestTest extends BasicRequestTest {
     
     private static final String COMMON_JSON = "{\"headers\":{\"clientIp\":\"1.1.1.1\"},\"requestId\":\"1\",\"module\":\"internal\"}";
     
     private static final String TO_STRING = "%s{headers={clientIp=1.1.1.1}, requestId='1'}";
     
-    @Before
+    @BeforeEach
     public void setUp() throws Exception {
         super.setUp();
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
@@ -39,26 +39,22 @@ public class EmptyContentRequestTest extends BasicRequestTest {
     }
     
     @Test
-    public void testClientDetectionRequest()
-            throws JsonProcessingException, InstantiationException, IllegalAccessException {
+    void testClientDetectionRequest() throws JsonProcessingException, InstantiationException, IllegalAccessException {
         doTest(ClientDetectionRequest.class);
     }
     
     @Test
-    public void testHealthCheckRequest()
-            throws JsonProcessingException, InstantiationException, IllegalAccessException {
+    void testHealthCheckRequest() throws JsonProcessingException, InstantiationException, IllegalAccessException {
         doTest(HealthCheckRequest.class);
     }
     
     @Test
-    public void testServerCheckRequest()
-            throws JsonProcessingException, InstantiationException, IllegalAccessException {
+    void testServerCheckRequest() throws JsonProcessingException, InstantiationException, IllegalAccessException {
         doTest(ServerCheckRequest.class);
     }
     
     @Test
-    public void testServerLoaderInfoRequest()
-            throws JsonProcessingException, InstantiationException, IllegalAccessException {
+    void testServerLoaderInfoRequest() throws JsonProcessingException, InstantiationException, IllegalAccessException {
         doTest(ServerLoaderInfoRequest.class);
     }
     

api/src/test/java/com/alibaba/nacos/api/remote/request/PushAckRequestTest.java

@@ -17,31 +17,35 @@
 package com.alibaba.nacos.api.remote.request;
 
 import com.alibaba.nacos.api.exception.runtime.NacosRuntimeException;
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class PushAckRequestTest extends BasicRequestTest {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class PushAckRequestTest extends BasicRequestTest {
     
     @Test
-    public void testSerialize() throws Exception {
+    void testSerialize() throws Exception {
         PushAckRequest request = PushAckRequest.build("1", false);
         request.setException(new NacosRuntimeException(500, "test"));
         String json = mapper.writeValueAsString(request);
-        Assert.assertNotNull(json);
-        Assert.assertTrue(json.contains("\"success\":false"));
-        Assert.assertTrue(json.contains("\"exception\":{"));
-        Assert.assertTrue(json.contains("\"module\":\"internal\""));
-        Assert.assertTrue(json.contains("\"requestId\":\"1\""));
+        assertNotNull(json);
+        assertTrue(json.contains("\"success\":false"));
+        assertTrue(json.contains("\"exception\":{"));
+        assertTrue(json.contains("\"module\":\"internal\""));
+        assertTrue(json.contains("\"requestId\":\"1\""));
     }
     
     @Test
-    public void testDeserialize() throws Exception {
+    void testDeserialize() throws Exception {
         String json = "{\"headers\":{},\"requestId\":\"1\",\"success\":false,"
                 + "\"exception\":{\"stackTrace\":[],\"errCode\":500,\"message\":\"errCode: 500, errMsg: test \","
                 + "\"localizedMessage\":\"errCode: 500, errMsg: test \",\"suppressed\":[]},\"module\":\"internal\"}";
         PushAckRequest result = mapper.readValue(json, PushAckRequest.class);
-        Assert.assertNotNull(result);
-        Assert.assertFalse(result.isSuccess());
-        Assert.assertEquals("1", result.getRequestId());
+        assertNotNull(result);
+        assertFalse(result.isSuccess());
+        assertEquals("1", result.getRequestId());
     }
 }

api/src/test/java/com/alibaba/nacos/api/remote/request/RequestMetaTest.java

@@ -18,22 +18,22 @@ package com.alibaba.nacos.api.remote.request;
 
 import com.alibaba.nacos.api.ability.constant.AbilityKey;
 import com.alibaba.nacos.api.ability.constant.AbilityStatus;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 
-public class RequestMetaTest {
+class RequestMetaTest {
     
     private RequestMeta requestMeta;
     
-    @Before
-    public void setUp() {
+    @BeforeEach
+    void setUp() {
         requestMeta = new RequestMeta();
         requestMeta.setClientIp("127.0.0.1");
         requestMeta.setClientVersion("1.0.0");
@@ -44,22 +44,22 @@ public class RequestMetaTest {
     }
     
     @Test
-    public void testGetClientIp() {
+    void testGetClientIp() {
         assertEquals("127.0.0.1", requestMeta.getClientIp());
     }
     
     @Test
-    public void testGetClientVersion() {
+    void testGetClientVersion() {
         assertEquals("1.0.0", requestMeta.getClientVersion());
     }
     
     @Test
-    public void testGetConnectionId() {
+    void testGetConnectionId() {
         assertEquals("test-connection-id", requestMeta.getConnectionId());
     }
     
     @Test
-    public void testGetLabels() {
+    void testGetLabels() {
         Map<String, String> labels = requestMeta.getLabels();
         assertNotNull(labels);
         assertEquals(1, labels.size());
@@ -67,20 +67,20 @@ public class RequestMetaTest {
     }
     
     @Test
-    public void testToString() {
+    void testToString() {
         String expected = "RequestMeta{connectionId='test-connection-id', clientIp='127.0.0.1', clientVersion='1.0.0', labels={env=dev}}";
         assertEquals(expected, requestMeta.toString());
     }
     
     @Test
-    public void testGetConnectionAbilityForNonExist() {
+    void testGetConnectionAbilityForNonExist() {
         assertEquals(AbilityStatus.UNKNOWN, requestMeta.getConnectionAbility(AbilityKey.SERVER_TEST_1));
         requestMeta.setAbilityTable(Collections.emptyMap());
         assertEquals(AbilityStatus.UNKNOWN, requestMeta.getConnectionAbility(AbilityKey.SERVER_TEST_1));
     }
     
     @Test
-    public void testGetConnectionAbilityForExist() {
+    void testGetConnectionAbilityForExist() {
         requestMeta.setAbilityTable(Collections.singletonMap(AbilityKey.SERVER_TEST_1.getName(), Boolean.FALSE));
         assertEquals(AbilityStatus.NOT_SUPPORTED, requestMeta.getConnectionAbility(AbilityKey.SERVER_TEST_1));
         requestMeta.setAbilityTable(Collections.singletonMap(AbilityKey.SERVER_TEST_1.getName(), Boolean.TRUE));

api/src/test/java/com/alibaba/nacos/api/remote/request/RequestTest.java

@@ -16,23 +16,23 @@
 
 package com.alibaba.nacos.api.remote.request;
 
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class RequestTest {
+class RequestTest {
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
     }
     
     @Test
-    public void testHeader() {
+    void testHeader() {
         MockRequest request = new MockRequest();
         assertTrue(request.getHeaders().isEmpty());
         assertNull(request.getHeader("clientIp"));

api/src/test/java/com/alibaba/nacos/api/remote/request/ServerReloadRequestTest.java

@@ -16,35 +16,38 @@
 
 package com.alibaba.nacos.api.remote.request;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class ServerReloadRequestTest extends BasicRequestTest {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class ServerReloadRequestTest extends BasicRequestTest {
     
     @Test
-    public void testSerialize() throws Exception {
+    void testSerialize() throws Exception {
         ServerReloadRequest request = new ServerReloadRequest();
         request.setReloadCount(10);
         request.setReloadServer("1.1.1.1");
         request.setRequestId("1");
         String json = mapper.writeValueAsString(request);
         System.out.println(json);
-        Assert.assertNotNull(json);
-        Assert.assertTrue(json.contains("\"reloadCount\":10"));
-        Assert.assertTrue(json.contains("\"reloadServer\":\"1.1.1.1\""));
-        Assert.assertTrue(json.contains("\"module\":\"internal\""));
-        Assert.assertTrue(json.contains("\"requestId\":\"1\""));
+        assertNotNull(json);
+        assertTrue(json.contains("\"reloadCount\":10"));
+        assertTrue(json.contains("\"reloadServer\":\"1.1.1.1\""));
+        assertTrue(json.contains("\"module\":\"internal\""));
+        assertTrue(json.contains("\"requestId\":\"1\""));
     }
     
     @Test
-    public void testDeserialize() throws Exception {
+    void testDeserialize() throws Exception {
         String json = "{\"headers\":{},\"requestId\":\"1\",\"reloadCount\":10,\"reloadServer\":\"1.1.1.1\","
                 + "\"module\":\"internal\"}";
         ServerReloadRequest result = mapper.readValue(json, ServerReloadRequest.class);
-        Assert.assertNotNull(result);
-        Assert.assertEquals(10, result.getReloadCount());
-        Assert.assertEquals("1.1.1.1", result.getReloadServer());
-        Assert.assertEquals("1", result.getRequestId());
-        Assert.assertEquals("internal", result.getModule());
+        assertNotNull(result);
+        assertEquals(10, result.getReloadCount());
+        assertEquals("1.1.1.1", result.getReloadServer());
+        assertEquals("1", result.getRequestId());
+        assertEquals("internal", result.getModule());
     }
 }

api/src/test/java/com/alibaba/nacos/api/remote/request/SetupAckRequestTest.java

@@ -17,34 +17,37 @@
 package com.alibaba.nacos.api.remote.request;
 
 import com.alibaba.nacos.api.ability.constant.AbilityKey;
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 
-public class SetupAckRequestTest extends BasicRequestTest {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class SetupAckRequestTest extends BasicRequestTest {
     
     @Test
-    public void testSerialize() throws Exception {
+    void testSerialize() throws Exception {
         SetupAckRequest request = new SetupAckRequest(
                 Collections.singletonMap(AbilityKey.SERVER_TEST_1.getName(), Boolean.TRUE));
         request.setRequestId("1");
         String json = mapper.writeValueAsString(request);
         System.out.println(json);
-        Assert.assertNotNull(json);
-        Assert.assertTrue(json.contains("\"abilityTable\":{\"test_1\":true}"));
-        Assert.assertTrue(json.contains("\"module\":\"internal\""));
-        Assert.assertTrue(json.contains("\"requestId\":\"1\""));
+        assertNotNull(json);
+        assertTrue(json.contains("\"abilityTable\":{\"test_1\":true}"));
+        assertTrue(json.contains("\"module\":\"internal\""));
+        assertTrue(json.contains("\"requestId\":\"1\""));
     }
     
     @Test
-    public void testDeserialize() throws Exception {
+    void testDeserialize() throws Exception {
         String json =
                 "{\"headers\":{},\"requestId\":\"1\",\"abilityTable\":{\"test_1\":true}," + "\"module\":\"internal\"}";
         SetupAckRequest result = mapper.readValue(json, SetupAckRequest.class);
-        Assert.assertNotNull(result);
-        Assert.assertTrue(result.getAbilityTable().get("test_1"));
-        Assert.assertEquals("1", result.getRequestId());
-        Assert.assertEquals("internal", result.getModule());
+        assertNotNull(result);
+        assertTrue(result.getAbilityTable().get("test_1"));
+        assertEquals("1", result.getRequestId());
+        assertEquals("internal", result.getModule());
     }
 }

api/src/test/java/com/alibaba/nacos/api/remote/response/EmptyContentResponseTest.java

@@ -20,15 +20,15 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class EmptyContentResponseTest {
+class EmptyContentResponseTest {
     
     private static final String COMMON_JSON = "{\"resultCode\":200,\"errorCode\":0,\"requestId\":\"1\",\"success\":true}";
     
@@ -36,14 +36,14 @@ public class EmptyContentResponseTest {
     
     ObjectMapper mapper = new ObjectMapper();
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSetErrorInfo() {
+    void testSetErrorInfo() {
         Response response = new Response() {
         };
         response.setErrorInfo(ResponseCode.FAIL.getCode(), ResponseCode.FAIL.getDesc());
@@ -53,7 +53,7 @@ public class EmptyContentResponseTest {
     }
     
     @Test
-    public void testClientDetectionResponse() throws JsonProcessingException {
+    void testClientDetectionResponse() throws JsonProcessingException {
         ClientDetectionResponse response = new ClientDetectionResponse();
         response.setRequestId("1");
         String actual = mapper.writeValueAsString(response);
@@ -63,7 +63,7 @@ public class EmptyContentResponseTest {
     }
     
     @Test
-    public void testConnectResetResponse() throws JsonProcessingException {
+    void testConnectResetResponse() throws JsonProcessingException {
         ConnectResetResponse response = new ConnectResetResponse();
         response.setRequestId("1");
         String actual = mapper.writeValueAsString(response);
@@ -73,7 +73,7 @@ public class EmptyContentResponseTest {
     }
     
     @Test
-    public void testHealthCheckResponse() throws JsonProcessingException {
+    void testHealthCheckResponse() throws JsonProcessingException {
         HealthCheckResponse response = new HealthCheckResponse();
         response.setRequestId("1");
         String actual = mapper.writeValueAsString(response);
@@ -83,7 +83,7 @@ public class EmptyContentResponseTest {
     }
     
     @Test
-    public void testServerReloadResponse() throws JsonProcessingException {
+    void testServerReloadResponse() throws JsonProcessingException {
         ServerReloadResponse response = new ServerReloadResponse();
         response.setRequestId("1");
         String actual = mapper.writeValueAsString(response);
@@ -93,7 +93,7 @@ public class EmptyContentResponseTest {
     }
     
     @Test
-    public void testSetupAckResponse() throws JsonProcessingException {
+    void testSetupAckResponse() throws JsonProcessingException {
         SetupAckResponse response = new SetupAckResponse();
         response.setRequestId("1");
         String actual = mapper.writeValueAsString(response);

api/src/test/java/com/alibaba/nacos/api/remote/response/ErrorResponseTest.java

@@ -18,59 +18,60 @@ package com.alibaba.nacos.api.remote.response;
 
 import com.alibaba.nacos.api.exception.NacosException;
 import com.alibaba.nacos.api.exception.runtime.NacosRuntimeException;
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class ErrorResponseTest {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class ErrorResponseTest {
     
     @Test
-    public void testBuildWithErrorCode() {
+    void testBuildWithErrorCode() {
         int errorCode = 500;
         String msg = "err msg";
         
         Response response = ErrorResponse.build(errorCode, msg);
         
-        Assert.assertEquals(errorCode, response.getErrorCode());
-        Assert.assertEquals(errorCode, response.getResultCode());
-        Assert.assertEquals(msg, response.getMessage());
+        assertEquals(errorCode, response.getErrorCode());
+        assertEquals(errorCode, response.getResultCode());
+        assertEquals(msg, response.getMessage());
     }
     
     @Test
-    public void testBuildWithThrowable() {
+    void testBuildWithThrowable() {
         String errMsg = "exception msg";
         RuntimeException runtimeException = new RuntimeException(errMsg);
         
         Response response = ErrorResponse.build(runtimeException);
         
-        Assert.assertEquals(ResponseCode.FAIL.getCode(), response.getErrorCode());
-        Assert.assertEquals(ResponseCode.FAIL.getCode(), response.getResultCode());
-        Assert.assertEquals(errMsg, response.getMessage());
+        assertEquals(ResponseCode.FAIL.getCode(), response.getErrorCode());
+        assertEquals(ResponseCode.FAIL.getCode(), response.getResultCode());
+        assertEquals(errMsg, response.getMessage());
     }
     
     @Test
-    public void testBuildWithNacosException() {
+    void testBuildWithNacosException() {
         int errCode = 500;
         String errMsg = "nacos exception msg";
         NacosException nacosException = new NacosException(errCode, errMsg);
         
         Response response = ErrorResponse.build(nacosException);
         
-        Assert.assertEquals(errCode, response.getErrorCode());
-        Assert.assertEquals(errCode, response.getResultCode());
-        Assert.assertEquals(errMsg, response.getMessage());
+        assertEquals(errCode, response.getErrorCode());
+        assertEquals(errCode, response.getResultCode());
+        assertEquals(errMsg, response.getMessage());
     }
     
     @Test
-    public void testBuildWithNacosRuntimeException() {
+    void testBuildWithNacosRuntimeException() {
         int errCode = 500;
         String errMsg = "nacos runtime exception msg";
         NacosRuntimeException nacosRuntimeException = new NacosRuntimeException(errCode, errMsg);
         
         Response response = ErrorResponse.build(nacosRuntimeException);
         
-        Assert.assertEquals(errCode, response.getErrorCode());
-        Assert.assertEquals(errCode, response.getResultCode());
-        Assert.assertEquals("errCode: " + errCode + ", errMsg: " + errMsg + " ", response.getMessage());
+        assertEquals(errCode, response.getErrorCode());
+        assertEquals(errCode, response.getResultCode());
+        assertEquals("errCode: " + errCode + ", errMsg: " + errMsg + " ", response.getMessage());
     }
-
+    
 }

api/src/test/java/com/alibaba/nacos/api/remote/response/ServerCheckResponseTest.java

@@ -20,24 +20,24 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ServerCheckResponseTest {
+class ServerCheckResponseTest {
     
     ObjectMapper mapper = new ObjectMapper();
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerialization() throws JsonProcessingException {
+    void testSerialization() throws JsonProcessingException {
         ServerCheckResponse response = new ServerCheckResponse("35643245_1.1.1.1_3306", false);
         String actual = mapper.writeValueAsString(response);
         assertTrue(actual.contains("\"connectionId\":\"35643245_1.1.1.1_3306\""));
@@ -45,7 +45,7 @@ public class ServerCheckResponseTest {
     }
     
     @Test
-    public void testDeserialization() throws JsonProcessingException {
+    void testDeserialization() throws JsonProcessingException {
         String json = "{\"resultCode\":200,\"errorCode\":0,\"connectionId\":\"35643245_1.1.1.1_3306\",\"success\":true,"
                 + "\"supportAbilityNegotiation\":true}";
         ServerCheckResponse response = mapper.readValue(json, ServerCheckResponse.class);

api/src/test/java/com/alibaba/nacos/api/remote/response/ServerLoaderInfoResponseTest.java

@@ -20,24 +20,24 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ServerLoaderInfoResponseTest {
+class ServerLoaderInfoResponseTest {
     
     ObjectMapper mapper = new ObjectMapper();
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
     }
     
     @Test
-    public void testSerialization() throws JsonProcessingException {
+    void testSerialization() throws JsonProcessingException {
         ServerLoaderInfoResponse response = new ServerLoaderInfoResponse();
         response.putMetricsValue("test", "testValue");
         String actual = mapper.writeValueAsString(response);
@@ -46,7 +46,7 @@ public class ServerLoaderInfoResponseTest {
     }
     
     @Test
-    public void testDeserialization() throws JsonProcessingException {
+    void testDeserialization() throws JsonProcessingException {
         String json = "{\"resultCode\":200,\"errorCode\":0,\"loaderMetrics\":{\"test\":\"testValue\"},\"success\":true}";
         ServerLoaderInfoResponse response = mapper.readValue(json, ServerLoaderInfoResponse.class);
         assertEquals(1, response.getLoaderMetrics().size());

api/src/test/java/com/alibaba/nacos/api/selector/AbstractCmdbSelectorTest.java

@@ -20,29 +20,29 @@ import com.alibaba.nacos.api.cmdb.pojo.Entity;
 import com.alibaba.nacos.api.exception.NacosException;
 import com.alibaba.nacos.api.naming.pojo.Instance;
 import com.alibaba.nacos.api.selector.context.CmdbContext;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import static com.alibaba.nacos.api.common.Constants.Naming.CMDB_CONTEXT_TYPE;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class AbstractCmdbSelectorTest {
+class AbstractCmdbSelectorTest {
     
     private AtomicInteger counter;
     
-    @Before
-    public void setUp() {
+    @BeforeEach
+    void setUp() {
         counter = new AtomicInteger();
     }
     
     @Test
-    public void testSetExpression() {
+    void testSetExpression() {
         MockCmdbSelector cmdbSelector = new MockCmdbSelector();
         assertNull(cmdbSelector.getExpression());
         cmdbSelector.setExpression("test");
@@ -50,7 +50,7 @@ public class AbstractCmdbSelectorTest {
     }
     
     @Test
-    public void testParse() throws NacosException {
+    void testParse() throws NacosException {
         MockCmdbSelector cmdbSelector = new MockCmdbSelector();
         cmdbSelector.parse("test");
         assertEquals("test", cmdbSelector.getExpression());
@@ -58,7 +58,7 @@ public class AbstractCmdbSelectorTest {
     }
     
     @Test
-    public void testSelect() {
+    void testSelect() {
         CmdbContext<Instance> context = new CmdbContext<>();
         CmdbContext.CmdbInstance<Instance> provider = new CmdbContext.CmdbInstance<>();
         provider.setInstance(new Instance());
@@ -78,12 +78,12 @@ public class AbstractCmdbSelectorTest {
     }
     
     @Test
-    public void testGetContextType() {
+    void testGetContextType() {
         assertEquals(CMDB_CONTEXT_TYPE, new MockCmdbSelector().getContextType());
     }
     
     @Test
-    public void testGetType() {
+    void testGetType() {
         assertEquals("mock", new MockCmdbSelector().getType());
     }
     

api/src/test/java/com/alibaba/nacos/api/selector/ExpressionSelectorTest.java

@@ -21,25 +21,25 @@ import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.jsontype.NamedType;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ExpressionSelectorTest {
+class ExpressionSelectorTest {
     
     ObjectMapper mapper = new ObjectMapper();
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
         mapper.registerSubtypes(new NamedType(ExpressionSelector.class, SelectorType.label.name()));
     }
     
     @Test
-    public void testSerialization() throws JsonProcessingException {
+    void testSerialization() throws JsonProcessingException {
         ExpressionSelector selector = new ExpressionSelector();
         selector.setExpression("test expression");
         String actual = mapper.writeValueAsString(selector);
@@ -48,7 +48,7 @@ public class ExpressionSelectorTest {
     }
     
     @Test
-    public void testDeserialization() throws JsonProcessingException {
+    void testDeserialization() throws JsonProcessingException {
         String json = "{\"type\":\"label\",\"expression\":\"test expression\"}";
         AbstractSelector actual = mapper.readValue(json, AbstractSelector.class);
         assertEquals(SelectorType.label.name(), actual.getType());

api/src/test/java/com/alibaba/nacos/api/selector/NoneSelectorTest.java

@@ -21,32 +21,32 @@ import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.jsontype.NamedType;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class NoneSelectorTest {
+class NoneSelectorTest {
     
     ObjectMapper mapper = new ObjectMapper();
     
-    @Before
-    public void setUp() throws Exception {
+    @BeforeEach
+    void setUp() throws Exception {
         mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
         mapper.registerSubtypes(new NamedType(NoneSelector.class, SelectorType.none.name()));
     }
     
     @Test
-    public void testSerialization() throws JsonProcessingException {
+    void testSerialization() throws JsonProcessingException {
         NoneSelector selector = new NoneSelector();
         String actual = mapper.writeValueAsString(selector);
         assertTrue(actual.contains("\"type\":\"" + SelectorType.none.name() + "\""));
     }
     
     @Test
-    public void testDeserialization() throws JsonProcessingException {
+    void testDeserialization() throws JsonProcessingException {
         String json = "{\"type\":\"none\"}";
         AbstractSelector actual = mapper.readValue(json, AbstractSelector.class);
         assertEquals(SelectorType.none.name(), actual.getType());

api/src/test/java/com/alibaba/nacos/api/selector/context/CmdbContextTest.java

@@ -17,16 +17,16 @@
 package com.alibaba.nacos.api.selector.context;
 
 import com.alibaba.nacos.api.naming.pojo.Instance;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collections;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class CmdbContextTest {
+class CmdbContextTest {
     
     @Test
-    public void testToString() {
+    void testToString() {
         CmdbContext<Instance> cmdbContext = new CmdbContext<>();
         cmdbContext.setProviders(Collections.singletonList(new CmdbContext.CmdbInstance<>()));
         cmdbContext.setConsumer(new CmdbContext.CmdbInstance<>());

api/src/test/java/com/alibaba/nacos/api/utils/AbilityKeyTest.java

@@ -18,26 +18,28 @@ package com.alibaba.nacos.api.utils;
 
 import com.alibaba.nacos.api.ability.constant.AbilityKey;
 import com.alibaba.nacos.api.ability.constant.AbilityMode;
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-/**.
+/**
+ * .
+ *
  * @author Daydreamer
  * @description Ability key test
  * @date 2022/9/8 12:27
  **/
-public class AbilityKeyTest {
+class AbilityKeyTest {
     
     @Test
-    public void testMapStr() {
+    void testMapStr() {
         Map<AbilityKey, Boolean> enumMap = new HashMap<>();
         Map<String, Boolean> stringBooleanMap = AbilityKey.mapStr(enumMap);
         assertEquals(0, stringBooleanMap.size());
@@ -47,27 +49,27 @@ public class AbilityKeyTest {
         enumMap.put(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC, false);
         stringBooleanMap = AbilityKey.mapStr(enumMap);
         assertEquals(3, stringBooleanMap.size());
-        Assert.assertTrue(stringBooleanMap.get(AbilityKey.SERVER_TEST_1.getName()));
-        Assert.assertFalse(stringBooleanMap.get(AbilityKey.SERVER_TEST_2.getName()));
-        Assert.assertFalse(stringBooleanMap.get(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC.getName()));
+        assertTrue(stringBooleanMap.get(AbilityKey.SERVER_TEST_1.getName()));
+        assertFalse(stringBooleanMap.get(AbilityKey.SERVER_TEST_2.getName()));
+        assertFalse(stringBooleanMap.get(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC.getName()));
         
         enumMap.put(AbilityKey.SERVER_TEST_2, true);
         enumMap.put(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC, true);
         stringBooleanMap = AbilityKey.mapStr(enumMap);
         assertEquals(3, stringBooleanMap.size());
-        Assert.assertTrue(stringBooleanMap.get(AbilityKey.SERVER_TEST_1.getName()));
-        Assert.assertTrue(stringBooleanMap.get(AbilityKey.SERVER_TEST_2.getName()));
-        Assert.assertTrue(stringBooleanMap.get(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC.getName()));
+        assertTrue(stringBooleanMap.get(AbilityKey.SERVER_TEST_1.getName()));
+        assertTrue(stringBooleanMap.get(AbilityKey.SERVER_TEST_2.getName()));
+        assertTrue(stringBooleanMap.get(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC.getName()));
     }
     
     @Test
-    public void testMapEnumForEmpty() {
+    void testMapEnumForEmpty() {
         Map<AbilityKey, Boolean> actual = AbilityKey.mapEnum(AbilityMode.SERVER, Collections.emptyMap());
         assertTrue(actual.isEmpty());
     }
     
     @Test
-    public void testMapEnum() {
+    void testMapEnum() {
         Map<String, Boolean> mapStr = new HashMap<>();
         mapStr.put("test-no-existed", true);
         Map<AbilityKey, Boolean> enumMap = AbilityKey.mapEnum(AbilityMode.SERVER, mapStr);
@@ -77,23 +79,23 @@ public class AbilityKeyTest {
         mapStr.put(AbilityKey.SERVER_TEST_1.getName(), true);
         mapStr.put(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC.getName(), true);
         enumMap = AbilityKey.mapEnum(AbilityMode.SERVER, mapStr);
-        Assert.assertFalse(enumMap.get(AbilityKey.SERVER_TEST_2));
-        Assert.assertTrue(enumMap.get(AbilityKey.SERVER_TEST_1));
-        Assert.assertTrue(enumMap.get(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC));
-    
+        assertFalse(enumMap.get(AbilityKey.SERVER_TEST_2));
+        assertTrue(enumMap.get(AbilityKey.SERVER_TEST_1));
+        assertTrue(enumMap.get(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC));
+        
         mapStr.clear();
         mapStr.put(AbilityKey.SERVER_TEST_2.getName(), true);
         mapStr.put(AbilityKey.SERVER_TEST_1.getName(), true);
         mapStr.put(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC.getName(), true);
         enumMap = AbilityKey.mapEnum(AbilityMode.SERVER, mapStr);
-        Assert.assertTrue(enumMap.get(AbilityKey.SERVER_TEST_2));
-        Assert.assertTrue(enumMap.get(AbilityKey.SERVER_TEST_1));
-        Assert.assertTrue(enumMap.get(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC));
+        assertTrue(enumMap.get(AbilityKey.SERVER_TEST_2));
+        assertTrue(enumMap.get(AbilityKey.SERVER_TEST_1));
+        assertTrue(enumMap.get(AbilityKey.SERVER_SUPPORT_PERSISTENT_INSTANCE_BY_GRPC));
         
     }
     
     @Test
-    public void testGetAllValues() {
+    void testGetAllValues() {
         Collection<AbilityKey> actual = AbilityKey.getAllValues(AbilityMode.SERVER);
         assertEquals(3, actual.size());
         actual = AbilityKey.getAllValues(AbilityMode.SDK_CLIENT);
@@ -103,7 +105,7 @@ public class AbilityKeyTest {
     }
     
     @Test
-    public void testGetAllNames() {
+    void testGetAllNames() {
         Collection<String> actual = AbilityKey.getAllNames(AbilityMode.SERVER);
         assertEquals(3, actual.size());
         actual = AbilityKey.getAllNames(AbilityMode.SDK_CLIENT);
@@ -113,7 +115,7 @@ public class AbilityKeyTest {
     }
     
     @Test
-    public void testGetDescription() {
+    void testGetDescription() {
         assertEquals("just for junit test", AbilityKey.SERVER_TEST_1.getDescription());
     }
 }

api/src/test/java/com/alibaba/nacos/api/utils/NetUtilsTest.java

@@ -16,22 +16,22 @@
 
 package com.alibaba.nacos.api.utils;
 
-import org.junit.After;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.net.InetAddress;
 import java.util.Properties;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
-public class NetUtilsTest {
+class NetUtilsTest {
     
-    @After
-    public void tearDown() throws Exception {
+    @AfterEach
+    void tearDown() throws Exception {
         Class<?> clazz = Class.forName("com.alibaba.nacos.api.utils.NetUtils");
         Field field = clazz.getDeclaredField("localIp");
         field.setAccessible(true);
@@ -42,7 +42,7 @@ public class NetUtilsTest {
     }
     
     @Test
-    public void testLocalIpWithSpecifiedIp() {
+    void testLocalIpWithSpecifiedIp() {
         System.setProperty("com.alibaba.nacos.client.local.ip", "10.2.8.8");
         assertEquals("10.2.8.8", NetUtils.localIP());
         System.setProperty("com.alibaba.nacos.client.local.ip", "10.2.8.9");
@@ -50,7 +50,7 @@ public class NetUtilsTest {
     }
     
     @Test
-    public void testLocalIpWithPreferHostname() throws Exception {
+    void testLocalIpWithPreferHostname() throws Exception {
         InetAddress inetAddress = invokeGetInetAddress();
         String hostname = inetAddress.getHostName();
         System.setProperty("com.alibaba.nacos.client.local.preferHostname", "true");
@@ -58,14 +58,14 @@ public class NetUtilsTest {
     }
     
     @Test
-    public void testLocalIpWithoutPreferHostname() throws Exception {
+    void testLocalIpWithoutPreferHostname() throws Exception {
         InetAddress inetAddress = invokeGetInetAddress();
         String ip = inetAddress.getHostAddress();
         assertEquals(ip, NetUtils.localIP());
     }
     
     @Test
-    public void testLocalIpWithException() throws Exception {
+    void testLocalIpWithException() throws Exception {
         Field field = System.class.getDeclaredField("props");
         field.setAccessible(true);
         Properties properties = (Properties) field.get(null);

api/src/test/java/com/alibaba/nacos/api/utils/StringUtilsTest.java

@@ -16,94 +16,98 @@
 
 package com.alibaba.nacos.api.utils;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class StringUtilsTest {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class StringUtilsTest {
     
     @Test
-    public void testIsEmpty() {
-        Assert.assertTrue(StringUtils.isEmpty(null));
-        Assert.assertTrue(StringUtils.isEmpty(""));
-        Assert.assertFalse(StringUtils.isEmpty(" "));
-        Assert.assertFalse(StringUtils.isEmpty("bob"));
-        Assert.assertFalse(StringUtils.isEmpty("  bob  "));
+    void testIsEmpty() {
+        assertTrue(StringUtils.isEmpty(null));
+        assertTrue(StringUtils.isEmpty(""));
+        assertFalse(StringUtils.isEmpty(" "));
+        assertFalse(StringUtils.isEmpty("bob"));
+        assertFalse(StringUtils.isEmpty("  bob  "));
     }
     
     @Test
-    public void testIsBlank() {
-        Assert.assertTrue(StringUtils.isBlank(null));
-        Assert.assertTrue(StringUtils.isBlank(""));
-        Assert.assertTrue(StringUtils.isBlank(" "));
-        Assert.assertFalse(StringUtils.isBlank("bob"));
-        Assert.assertFalse(StringUtils.isBlank("  bob  "));
+    void testIsBlank() {
+        assertTrue(StringUtils.isBlank(null));
+        assertTrue(StringUtils.isBlank(""));
+        assertTrue(StringUtils.isBlank(" "));
+        assertFalse(StringUtils.isBlank("bob"));
+        assertFalse(StringUtils.isBlank("  bob  "));
     }
     
     @Test
-    public void testTrim() {
-        Assert.assertNull(StringUtils.trim(null));
-        Assert.assertEquals(StringUtils.EMPTY, StringUtils.trim(""));
-        Assert.assertEquals(StringUtils.EMPTY, StringUtils.trim("     "));
-        Assert.assertEquals("abc", StringUtils.trim("abc"));
-        Assert.assertEquals("abc", StringUtils.trim("    abc    "));
+    void testTrim() {
+        assertNull(StringUtils.trim(null));
+        assertEquals(StringUtils.EMPTY, StringUtils.trim(""));
+        assertEquals(StringUtils.EMPTY, StringUtils.trim("     "));
+        assertEquals("abc", StringUtils.trim("abc"));
+        assertEquals("abc", StringUtils.trim("    abc    "));
     }
     
     @Test
-    public void testEquals() {
-        Assert.assertTrue(StringUtils.equals(null, null));
-        Assert.assertFalse(StringUtils.equals(null, "abc"));
-        Assert.assertFalse(StringUtils.equals("abc", null));
-        Assert.assertTrue(StringUtils.equals("abc", "abc"));
-        Assert.assertFalse(StringUtils.equals("abc", "ABC"));
-        Assert.assertTrue(StringUtils.equals(new StringBuilder("abc"), "abc"));
-        Assert.assertFalse(StringUtils.equals(new StringBuilder("ABC"), "abc"));
+    void testEquals() {
+        assertTrue(StringUtils.equals(null, null));
+        assertFalse(StringUtils.equals(null, "abc"));
+        assertFalse(StringUtils.equals("abc", null));
+        assertTrue(StringUtils.equals("abc", "abc"));
+        assertFalse(StringUtils.equals("abc", "ABC"));
+        assertTrue(StringUtils.equals(new StringBuilder("abc"), "abc"));
+        assertFalse(StringUtils.equals(new StringBuilder("ABC"), "abc"));
     }
     
     @Test
-    public void testRegionMatchesEqualsCaseSensitive() {
-        Assert.assertTrue(StringUtils.regionMatches("abc", false, 0, "xabc", 1, 3));
-    
-    }
-    
-    @Test
-    public void testRegionMatchesEqualsCaseInsensitive() {
-        Assert.assertTrue(StringUtils.regionMatches("abc", true, 0, "xabc", 1, 3));
-        Assert.assertTrue(StringUtils.regionMatches("abc", true, 0, "xAbc", 1, 3));
-    }
-    
-    @Test
-    public void testRegionMatchesNotEqualsCaseSensitive() {
-        Assert.assertFalse(StringUtils.regionMatches("abc", false, 0, "xAbc", 1, 3));
-        Assert.assertFalse(StringUtils.regionMatches("abc", false, 0, "xCbc", 1, 3));
+    void testRegionMatchesEqualsCaseSensitive() {
+        assertTrue(StringUtils.regionMatches("abc", false, 0, "xabc", 1, 3));
         
     }
     
     @Test
-    public void testRegionMatchesNotEqualsCaseInsensitive() {
-        Assert.assertFalse(StringUtils.regionMatches("abc", true, 0, "xCab", 1, 3));
+    void testRegionMatchesEqualsCaseInsensitive() {
+        assertTrue(StringUtils.regionMatches("abc", true, 0, "xabc", 1, 3));
+        assertTrue(StringUtils.regionMatches("abc", true, 0, "xAbc", 1, 3));
     }
     
     @Test
-    public void testRegionMatchesEqualsCaseSensitiveForNonString() {
-        Assert.assertTrue(StringUtils.regionMatches(new StringBuilder("abc"), false, 0, "xabc", 1, 3));
+    void testRegionMatchesNotEqualsCaseSensitive() {
+        assertFalse(StringUtils.regionMatches("abc", false, 0, "xAbc", 1, 3));
+        assertFalse(StringUtils.regionMatches("abc", false, 0, "xCbc", 1, 3));
         
     }
     
     @Test
-    public void testRegionMatchesEqualsCaseInsensitiveForNonString() {
-        Assert.assertTrue(StringUtils.regionMatches(new StringBuilder("abc"), true, 0, "xabc", 1, 3));
-        Assert.assertTrue(StringUtils.regionMatches(new StringBuilder("abc"), true, 0, "xAbc", 1, 3));
+    void testRegionMatchesNotEqualsCaseInsensitive() {
+        assertFalse(StringUtils.regionMatches("abc", true, 0, "xCab", 1, 3));
     }
     
     @Test
-    public void testRegionMatchesNotEqualsCaseSensitiveForNonString() {
-        Assert.assertFalse(StringUtils.regionMatches(new StringBuilder("abc"), false, 0, "xAbc", 1, 3));
-        Assert.assertFalse(StringUtils.regionMatches(new StringBuilder("abc"), false, 0, "xCbc", 1, 3));
+    void testRegionMatchesEqualsCaseSensitiveForNonString() {
+        assertTrue(StringUtils.regionMatches(new StringBuilder("abc"), false, 0, "xabc", 1, 3));
         
     }
     
     @Test
-    public void testRegionMatchesNotEqualsCaseInsensitiveForNonString() {
-        Assert.assertFalse(StringUtils.regionMatches(new StringBuilder("abc"), true, 0, "xCab", 1, 3));
+    void testRegionMatchesEqualsCaseInsensitiveForNonString() {
+        assertTrue(StringUtils.regionMatches(new StringBuilder("abc"), true, 0, "xabc", 1, 3));
+        assertTrue(StringUtils.regionMatches(new StringBuilder("abc"), true, 0, "xAbc", 1, 3));
+    }
+    
+    @Test
+    void testRegionMatchesNotEqualsCaseSensitiveForNonString() {
+        assertFalse(StringUtils.regionMatches(new StringBuilder("abc"), false, 0, "xAbc", 1, 3));
+        assertFalse(StringUtils.regionMatches(new StringBuilder("abc"), false, 0, "xCbc", 1, 3));
+        
+    }
+    
+    @Test
+    void testRegionMatchesNotEqualsCaseInsensitiveForNonString() {
+        assertFalse(StringUtils.regionMatches(new StringBuilder("abc"), true, 0, "xCab", 1, 3));
     }
 }