Android 单元测试用例自动化：Robolectric 库与 Android 测试框架

的文章：

java
@RunWith(RobolectricTestRunner.class)
public class ExampleUnitTest {
    @Test
    public void addition_isCorrect() {
        int result = 2 + 2;
        assertThat(result).isEqualTo(4);
    }
}

java
@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {
    @Rule
    public ActivityTestRule mActivityRule = new ActivityTestRule<>(MainActivity.class);
    @Test
    public void testButton() {
        onView(withId(R.id.button)).perform(click());
        onView(withId(R.id.textView)).check(matches(withText("Hello, World!")));
    }
}