Question

I would like to catch any throwable during a Selenium test e.g. in order to make a screenshot. The only solution I could come up with for now is to separately surround the test steps with a try and catch block in every test method as following:

    @Test
    public void testYouTubeVideo() throws Throwable {
        try {

            // My test steps go here


        } catch (Throwable t) {
            captureScreenshots();
            throw t;
        }
    }

I’m sure there is a better solution for this. I would like a higher, more centralized location for this try-catch-makeScreenshot routine, so that my test would be able to include just the test steps again. Any ideas would be greatly appreciated.

Answer 1

You need to declare a TestRule, probably a TestWatcher or if you want to define the rules more explicitly, ExternalResource. This would look something like:

public class WatchmanTest {
    @Rule
    public TestRule watchman= new TestWatcher() {
        @Override
        protected void failed(Description d) {
            // take screenshot here
        }
    };

    @Test
    public void fails() {
        fail();
    }

    @Test
    public void succeeds() {
    }
}

The TestWatcher anonymous class can of course be factored out, and just referenced from the test classes.