Sometimes it so happens that our code is not completely ready while running a test case. As a result, the test case fails. The @Ignore annotation helps in this scenario.
- A test method annotated with @Ignore will not be executed.
- If a test class is annotated with @Ignore, then none of its test methods will be executed.
Create a Class
Create a java class to be tested, say, MessageUtil.java in C:\>JUNIT_WORKSPACE./* * This class prints the given message on console. */ public class MessageUtil { private String message; //Constructor //@param message to be printed public MessageUtil(String message){ this.message = message; } // prints the message public String printMessage(){ System.out.println(message); return message; } // add "Hi!" to the message public String salutationMessage(){ message = "Hi!" + message; System.out.println(message); return message; } }
Create Test Case Class
- Create a java test class, say, TestJunit.java.
- Add a test method testPrintMessage() or testSalutationMessage() to your test class.
- Add an Annotaion @Ignore to method testPrintMessage().
import org.junit.Test; import org.junit.Ignore; import static org.junit.Assert.assertEquals; public class TestJunit { String message = "Robert"; MessageUtil messageUtil = new MessageUtil(message); @Ignore @Test public void testPrintMessage() { System.out.println("Inside testPrintMessage()"); message = "Robert"; assertEquals(message,messageUtil.printMessage()); } @Test public void testSalutationMessage() { System.out.println("Inside testSalutationMessage()"); message = "Hi!" + "Robert"; assertEquals(message,messageUtil.salutationMessage()); } }
Create Test Runner Class
Create a java class file named TestRunner.java in C:\>JUNIT_WORKSPACE to execute test case(s).import org.junit.runner.JUnitCore; import org.junit.runner.Result; import org.junit.runner.notification.Failure; public class TestRunner { public static void main(String[] args) { Result result = JUnitCore.runClasses(TestJunit.class); for (Failure failure : result.getFailures()) { System.out.println(failure.toString()); } System.out.println(result.wasSuccessful()); } }Compile the MessageUtil, Test case and Test Runner classes using javac.
C:\JUNIT_WORKSPACE>javac MessageUtil.java TestJunit.java TestRunner.javaNow run the Test Runner, which will not run the testPrintMessage() test case defined in the provided Test Case class.
C:\JUNIT_WORKSPACE>java TestRunnerVerify the output. testPrintMessage() test case is not tested.
Inside testSalutationMessage() Hi!Robert trueNow, update TestJunit in C:\>JUNIT_WORKSPACE to ignore all test cases. Add @Ignore at class level.
import org.junit.Test; import org.junit.Ignore; import static org.junit.Assert.assertEquals; @Ignore public class TestJunit { String message = "Robert"; MessageUtil messageUtil = new MessageUtil(message); @Test public void testPrintMessage() { System.out.println("Inside testPrintMessage()"); message = "Robert"; assertEquals(message,messageUtil.printMessage()); } @Test public void testSalutationMessage() { System.out.println("Inside testSalutationMessage()"); message = "Hi!" + "Robert"; assertEquals(message,messageUtil.salutationMessage()); } }Compile the test case using javac.
C:\JUNIT_WORKSPACE>javac TestJunit.javaKeep your Test Runner unchanged as follows −
import org.junit.runner.JUnitCore; import org.junit.runner.Result; import org.junit.runner.notification.Failure; public class TestRunner { public static void main(String[] args) { Result result = JUnitCore.runClasses(TestJunit.class); for (Failure failure : result.getFailures()) { System.out.println(failure.toString()); } System.out.println(result.wasSuccessful()); } }Now run the Test Runner, which will not run any test case defined in the provided Test Case class.
C:\JUNIT_WORKSPACE>java TestRunnerVerify the output. No test case is tested.
true
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