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JUNIT - IGNORE A TEST

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.

Now let's see @Ignore in action.

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().

Create a java class file named TestJunit.java in C:\ JUNIT_WORKSPACE.

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.java

Now run the Test Runner, which will not run the testPrintMessage() test case defined in the provided Test Case class.

C:\JUNIT_WORKSPACE>java TestRunner

Verify the output. testPrintMessage() test case is not tested.

Inside testSalutationMessage()
Hi!Robert
true

Now, 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.java
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 TestRunner

Verify the output. No test case is tested.

true

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JUNIT - IGNORE A TEST