CODEWITHSUNDEEP
javajunitexit
bcoughlan
bcoughlan

Reputation: 26627

JUnit - stop it from exiting on finish?

Quick JUnit question. I'm running some unit tests that involve starting up the GUI and doing a load of stuff.

I would like to see the results after the test to confirm it visually. However, it gets to the end of the code and exits, as it should. If I want to override this, I put a breakpoint on the last line of the test. This is pretty awkward though.

Is there some option to stop it from exiting?

Upvotes: 4

Views: 5293

Answers (4)

Alfred
Alfred

Reputation: 61773

How about using a countdownlatch which you count down.

private static CountDownLatch countdown = new CountDownLatch(1);

@AfterClass
public static void tearDownClass() throws Exception {
    countdown.await();
}

Then somewhere else in your code you count down latch on event.

countdown.countDown();

When countdown.countDown() is called then countdown.await() will continue.

Upvotes: 0

seanhodges
seanhodges

Reputation: 17524

Due to the fact you require a GUI and user interaction during the execution of the test, this is a "functional" test rather than a "unit" test.

You could write the results to a file at the end, this would have the added benefit that you could assert that the output is correct/present programatically at the end. If you really want to keep the test running, then you could insert an infinite loop at the end of your test:

JUnit 3:

public void tearDown() {
    while (true) { Thread.sleep(2000); };
}

JUnit 4:

@After
public void tearDown() {
    while (true) { Thread.sleep(2000); };
}

This will keep the JUnit thread running, but you will need to ensure that your GUI events are being handled in another thread.

Upvotes: 3

Chris Knight
Chris Knight

Reputation: 25074

One possibility is that your JUnit test is executing a tearDown() method, perhaps in a base class, which shuts down the GUI. If so, you can override the tearDown() method in your JUnit test to prevent this behaviour. E.g.

protected void tearDown()
{
   //do nothing
}

Upvotes: 0

lexicore
lexicore

Reputation: 43661

In Eclipse: Run configurations... > Test > Keep JUnit running...

Upvotes: 1

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