TestWatcher for reporting in JUnit - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to extend TestWatcher for custom test reporting.

JUnit

class MyTestWatcher extends TestWatcher {
    @Override
    protected void failed(Throwable e, Description description) {
        System.out.println("Test " + description.getMethodName() + " [1].");
    }
}

Drag options to blanks, or click blank then click option'

Astarted

Bpassed

Cskipped

Dfailed

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'passed' instead of 'failed' in the message.

Confusing method names for test lifecycle events.

The failed() method is called when a test fails, so the message should say 'failed'.

2fill in blank

medium

Complete the code to print a message when a test succeeds.

JUnit

class MyTestWatcher extends TestWatcher {
    @Override
    protected void succeeded(Description description) {
        System.out.println("Test " + description.getMethodName() + " [1] successfully.");
    }
}

Drag options to blanks, or click blank then click option'

Afailed

Bpassed

Cskipped

Dstarted

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'failed' instead of 'passed' in the message.

Mixing up test lifecycle method names.

The succeeded() method runs when a test passes, so the message should say 'passed'.

3fill in blank

hard

Fix the error in the method signature to override the TestWatcher method correctly.

JUnit

class MyTestWatcher extends TestWatcher {
    @Override
    protected void [1](Description description) {
        System.out.println("Test started: " + description.getMethodName());
    }
}

Drag options to blanks, or click blank then click option'

Astarting

Bstarted

Cstart

DstartTest

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'started' instead of 'starting' as method name.

Using non-existent method names like 'startTest'.

The correct method name to override for test start is starting(Description description).

4fill in blank

hard

Fill both blanks to log test success and failure messages correctly.

JUnit

class MyTestWatcher extends TestWatcher {
    @Override
    protected void [1](Description description) {
        System.out.println("Test " + description.getMethodName() + " passed.");
    }

    @Override
    protected void [2](Throwable e, Description description) {
        System.out.println("Test " + description.getMethodName() + " failed.");
    }
}

Drag options to blanks, or click blank then click option'

Asucceeded

Bstarting

Cfailed

Dfinished

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping succeeded and failed method names.

Using unrelated lifecycle method names.

The succeeded() method is for passed tests, and failed() is for failed tests.

5fill in blank

hard

Fill all three blanks to create a TestWatcher that reports test start, success, and failure.

JUnit

class MyTestWatcher extends TestWatcher {
    @Override
    protected void [1](Description description) {
        System.out.println("Starting test: " + description.getMethodName());
    }

    @Override
    protected void [2](Description description) {
        System.out.println("Test passed: " + description.getMethodName());
    }

    @Override
    protected void [3](Throwable e, Description description) {
        System.out.println("Test failed: " + description.getMethodName());
    }
}

Drag options to blanks, or click blank then click option'

Astarting

Bsucceeded

Cfailed

Dfinished

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up method names or using 'finished' incorrectly.

Not overriding all three methods properly.

The starting() method runs when a test starts, succeeded() when it passes, and failed() when it fails.