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Junit basic annotation example

Annotations for Junit testing:

1. @Test: It is used to specify the test method.

2. @BeforeClass: It is used to specify that method will be called only once, before starting all the test cases.

3. @AfterClass: It is used to specify that method will be called only once, after finishing all the test cases.

4. @Before: It is used to specify that method will be called before each test case.

5. @After: It is used to specify that method will be called after each test case.

6. @Ignore: It is used to ignore the test case.

Example:

DivisionTestCase.java

import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;
 
/**
 * This is test case class for basic JUnit annotation use.
 * @author codesjava
 */
public class DivisionTestCase {
	//called only once, before starting all the test cases.
	@BeforeClass
	public static void beforeClass() {
	   System.out.println("In beforeClass method.");
	}
 
	//called only once, after finishing all the test cases.
	@AfterClass
	public static void  afterClass() {
		System.out.println("In afterClass method");
	}
 
	//called before each test case.
	@Before
	public void before() {
	   System.out.println("In before method");
	}
 
	//called after each test case.
	@After
	public void after() {
	   System.out.println("In after method");
	}
 
	//define the test case.
	@Test
	public void testCase1() {
	   System.out.println("In testCase1");
	}
 
	//define the test case.
	@Test
	public void testCase2() {
	   System.out.println("In testCase2");
	}
 
	//ignore the test case.It will not execute.
	@Ignore
	@Test
	public void testCase3() {
	   System.out.println("In testCase3");
	}
 
}

Output:

In beforeClass method.
In before method
In testCase1
In after method
In before method
In testCase2
In after method
In afterClass method

 
junit1
 

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