@Override
    protected void setUp() throws Exception {
        super.setUp();

        // Espresso does not start the Activity for you we need to do this manually here.
        mActivity = getActivity();
    }
JUnit3 Ui Tests for {@link CalculatorActivity} using the {@link AndroidJUnitRunner}. This class
uses the Junit3 syntax for tests.

<p> With the new AndroidJUnit runner you can run both JUnit3 and JUnit4 tests in a single test
test suite. The {@link AndroidRunnerBuilder} which extends JUnit's {@link
AllDefaultPossibilitiesBuilder} will create a single {@link TestSuite} from all tests and run
them. </p>
runner/AndroidJunitRunnerSample/app/src/androidTest/java/com/example/android/testing/androidjunitrunnersample/OperationHintInstrumentationTest.java