Java Testing

• JUnit:

JUnit is a widely-used testing framework in the Java ecosystem, offering a simple and effective way to write unit tests. Let’s look at an example of a simple JUnit test for a basic math utility class:

import org.junit.Test;
import static org.junit.Assert.*;

public class MathUtilsTest {

@Test
public void testAddition() {
int result = MathUtils.add(5, 3);
assertEquals(8, result);
}
}

• TestNG:

TestNG is another powerful testing framework for Java, inspired by JUnit but with additional features. It supports various test configurations and simplifies test suite management. Here’s a similar example of a TestNG test for the math utility class:

import org.testng.annotations.Test;
import static org.testng.Assert.*;

public class MathUtilsTest {

@Test
public void testAddition() {
int result = MathUtils.add(5, 3);
assertEquals(result, 8);
}
}
Both JUnit and TestNG provide annotations like @Test, @Before, and @After, allowing developers to structure their tests efficiently and execute pre- and post-test actions.