Algorithms/JavaAlgorithms
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add unit tests for PalindromeNumber (#4227)

Browse Source
This commit is contained in:
Albina Gimaletdinova 2023-07-01 21:29:10 +03:00 committed by GitHub
parent 8862a4dea5
commit 4b45ac7e71
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 32 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
DIRECTORY.md
View File

@ -655,6 +655,7 @@
* [MedianTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/maths/MedianTest.java)
* [MobiusFunctionTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/maths/MobiusFunctionTest.java)
* [NthUglyNumberTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/maths/NthUglyNumberTest.java)
* [PalindromeNumberTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/maths/PalindromeNumberTest.java)
* [PascalTriangleTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/maths/PascalTriangleTest.java)
* [PerfectCubeTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/maths/PerfectCubeTest.java)
* [PerfectNumberTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/maths/PerfectNumberTest.java)

9
src/main/java/com/thealgorithms/maths/PalindromeNumber.java
View File

@ -1,13 +1,6 @@
package com.thealgorithms.maths;
public class PalindromeNumber {
public static void main(String[] args) {
assert isPalindrome(12321);
assert !isPalindrome(1234);
assert isPalindrome(1);
}
/**
* Check if {@code n} is palindrome number or not
*
@ -17,7 +10,7 @@ public class PalindromeNumber {
*/
public static boolean isPalindrome(int number) {
if (number < 0) {
throw new IllegalArgumentException(number + "");
throw new IllegalArgumentException("Input parameter must not be negative!");
}
int numberCopy = number;
int reverseNumber = 0;

30
src/test/java/com/thealgorithms/maths/PalindromeNumberTest.java Normal file
View File

@ -0,0 +1,30 @@
package com.thealgorithms.maths;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
/**
* @author Albina Gimaletdinova on 01/07/2023
*/
public class PalindromeNumberTest {
@Test
public void testNumbersArePalindromes() {
Assertions.assertTrue(PalindromeNumber.isPalindrome(0));
Assertions.assertTrue(PalindromeNumber.isPalindrome(1));
Assertions.assertTrue(PalindromeNumber.isPalindrome(2332));
Assertions.assertTrue(PalindromeNumber.isPalindrome(12321));
}
@Test
public void testNumbersAreNotPalindromes() {
Assertions.assertFalse(PalindromeNumber.isPalindrome(12));
Assertions.assertFalse(PalindromeNumber.isPalindrome(990));
Assertions.assertFalse(PalindromeNumber.isPalindrome(1234));
}
@Test
public void testIfNegativeInputThenExceptionExpected() {
IllegalArgumentException exception = Assertions.assertThrows(IllegalArgumentException.class, () -> PalindromeNumber.isPalindrome(-1));
Assertions.assertEquals(exception.getMessage(), "Input parameter must not be negative!");
}
}