Android Studio Espresso Testing Error: Empty Test Suite

While the question is already answered, figured it was worth posting for future visitors.

Make sure you check the logcat logs to ensure something isn't causing issues (crash) before the test is even run. I had bad code in my @BeforeClass block which resulted in the "Empty Test Suite" message in Android Studio despite having properly set the test runner.

You have to update the test "Edit Configuration" and include the AndroidJUnitRunner as the instrumentation runner.

I found the solution in this video: https://youtu.be/TGU0B4qRlHY?t=9m36s

Updated

Adding what @loeschg suggest: Make sure you check the logcat logs to ensure something isn't causing issues (crash) before the test is even run. Bad code in the @BeforeClass block could resulted in the "Empty Test Suite" message in Android Studio despite having properly set the test runner.