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Add LRUCacheTest and MRUCacheTest (fixes #3263) (#3277)

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valjamwo 2022-09-19 19:55:15 +02:00 committed by GitHub
parent a2dd154ad6
commit d56eaa58af
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4 changed files with 116 additions and 24 deletions
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12
src/main/java/com/thealgorithms/datastructures/caches/LRUCache.java
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@ -168,16 +168,4 @@ public class LRUCache<K, V> {
this.value = value;
}
}
public static void main(String[] args) {
final LRUCache<String, Integer> cache = new LRUCache<>(2);
cache.put("Key1", 1);
cache.put("Key2", 2);
cache.put("Key3", 3);
cache.put("Key4", 4);
System.out.println("getValue(Key1): " + cache.get("Key1"));
System.out.println("getValue(Key2): " + cache.get("Key2"));
System.out.println("getValue(Key3): " + cache.get("Key3"));
System.out.println("getValue(Key4): " + cache.get("Key4"));
}
}

12
src/main/java/com/thealgorithms/datastructures/caches/MRUCache.java
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@ -166,16 +166,4 @@ public class MRUCache<K, V> {
this.value = value;
}
}
public static void main(String[] args) {
final MRUCache<String, Integer> cache = new MRUCache<>(2);
cache.put("Key1", 1);
cache.put("Key2", 2);
cache.put("Key3", 3);
cache.put("Key4", 4);
System.out.println("getValue(Key1): " + cache.get("Key1"));
System.out.println("getValue(Key2): " + cache.get("Key2"));
System.out.println("getValue(Key3): " + cache.get("Key3"));
System.out.println("getValue(Key4): " + cache.get("Key4"));
}
}

58
src/test/java/com/thealgorithms/datastructures/caches/LRUCacheTest.java Normal file
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@ -0,0 +1,58 @@
package com.thealgorithms.datastructures.caches;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
import org.junit.jupiter.api.Test;
public class LRUCacheTest {
private static final int SIZE = 5;
@Test
public void putAndGetIntegerValues() {
LRUCache<Integer, Integer> lruCache = new LRUCache<>(SIZE);
for(int i = 0; i < SIZE; i++) {
lruCache.put(i, i);
}
for(int i = 0; i < SIZE; i++) {
assertEquals(i, lruCache.get(i));
}
}
@Test
public void putAndGetStringValues() {
LRUCache<String, String> lruCache = new LRUCache<>(SIZE);
for(int i = 0; i < SIZE; i++) {
lruCache.put("key" + i, "value" + i);
}
for(int i = 0; i < SIZE; i++) {
assertEquals("value" + i, lruCache.get("key" + i));
}
}
@Test
public void nullKeysAndValues() {
LRUCache<Integer, Integer> mruCache = new LRUCache<>(SIZE);
mruCache.put(null, 2);
mruCache.put(6, null);
assertEquals(2, mruCache.get(null));
assertNull(mruCache.get(6));
}
@Test
public void overCapacity() {
LRUCache<Integer, Integer> mruCache = new LRUCache<>(SIZE);
for(int i = 0; i < 10; i++) {
mruCache.put(i, i);
}
assertEquals(9, mruCache.get(9));
}
}

58
src/test/java/com/thealgorithms/datastructures/caches/MRUCacheTest.java Normal file
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@ -0,0 +1,58 @@
package com.thealgorithms.datastructures.caches;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
public class MRUCacheTest {
private static final int SIZE = 5;
@Test
public void putAndGetIntegerValues() {
MRUCache<Integer, Integer> lruCache = new MRUCache<>(SIZE);
for(int i = 0; i < SIZE; i++) {
lruCache.put(i, i);
}
for(int i = 0; i < SIZE; i++) {
assertEquals(i, lruCache.get(i));
}
}
@Test
public void putAndGetStringValues() {
MRUCache<String, String> lruCache = new MRUCache<>(SIZE);
for(int i = 0; i < SIZE; i++) {
lruCache.put("key" + i, "value" + i);
}
for(int i = 0; i < SIZE; i++) {
assertEquals("value" + i, lruCache.get("key" + i));
}
}
@Test
public void nullKeysAndValues() {
MRUCache<Integer, Integer> mruCache = new MRUCache<>(SIZE);
mruCache.put(null, 2);
mruCache.put(6, null);
assertEquals(2, mruCache.get(null));
assertNull(mruCache.get(6));
}
@Test
public void overCapacity() {
MRUCache<Integer, Integer> mruCache = new MRUCache<>(SIZE);
for(int i = 0; i < 10; i++) {
mruCache.put(i, i);
}
assertEquals(9, mruCache.get(9));
}
}