Wait for Platform.RunLater in a unit test

Question

I have a presentation class storing an XYChart.Series object and updating it by observing the model. The Series updating is done by using Platform.runLater(...)

I wa

Answer 1

To have it more in AssertJ style syntax, you can do something like this:

    @Test
    public void test() throws InterruptedException {
        // do test here

        assertAfterJavaFxPlatformEventsAreDone(() -> {
            // do assertions here
       }
    }

    private void assertAfterJavaFxPlatformEventsAreDone(Runnable runnable) throws InterruptedException {
        waitOnJavaFxPlatformEventsDone();
        runnable.run();
    }

    private void waitOnJavaFxPlatformEventsDone() throws InterruptedException {
        CountDownLatch countDownLatch = new CountDownLatch(1);
        Platform.runLater(countDownLatch::countDown);
        countDownLatch.await();
    }
}