MLModelTest.java

@RunWith(AndroidJUnit4.class)
@LargeTest
public class MLModelTest {

    @Rule
    public ActivityTestRule<ModelTestActivity> mainActivityActivityRule = new ActivityTestRule<>(ModelTestActivity.class);

    @Test
    public void testClassificationUI() {
        ModelTestActivity activity = mainActivityActivityRule.getActivity();
        Bitmap bmp = TestUtils.getBitmapFromAsset(activity.getAssets(), "tulip.jpg");
        activity.classifyImage(bmp);

        onView(withId(com.frogermcs.imageclassificationtester.test.R.id.tvClassification))
                .check(matches(withSubstring("Tulips")));
    }
}