May 15, 2021 jUnit
Sometimes there may be situations where our code is not ready, when the test case fails to test the method or code. @Ignore comments help us in this situation.
Now let's use examples to @Ignore.
/*
* 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;
}
}
In Directory C: Create a java JUNIT_WORKSPACE file named TestJunit in this .java
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());
}
}
In Directory C: This is JUNIT_WORKSPACE to create a java class file called TestRunner .java to execute the test case.
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());
}
}
Use javac commands to compile MessageUtil, Test case, and Test Runner classes.
C:\JUNIT_WORKSPACE>javac MessageUtil.java TestJunit.java TestRunner.java
Now run the Test Runner class, which does not run the TestPrintMessage() test case defined in the Test Case class.
C:\JUNIT_WORKSPACE>java TestRunner
Verify the output. The testPrintMessage() test case was not tested.
Inside testSalutationMessage()
Hi!Robert
true
Now update in Directory C: TestJunit JUNIT_WORKSPACE in the class level uses @Ignore to ignore all test cases
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());
}
}
Use the javac command to compile Test case
C:\JUNIT_WORKSPACE>javac TestJunit.java
Keep 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());
}
}
Running Test Runner now does not run any of the test samples defined in the Test Case class.
C:\JUNIT_WORKSPACE>java TestRunner
Verify the output. No test cases have been tested.
true