LoginActivityTest - Initial state test

LoginActivityTest.java

@RunWith(AndroidJUnit4.class)
public class LoginActivityTest {

  @Rule
  public ActivityTestRule<LoginActivity>
      mActivityRule = new ActivityTestRule<>(LoginActivity.class, false, true);
      
  @Test
  public void whenActivityIsLaunched_shouldDisplayInitialState() {
    onView(withId(R.id.login_image)).check(matches(isDisplayed()));
    onView(withId(R.id.login_username)).check(matches(isDisplayed()));
    onView(withId(R.id.login_password)).check(matches(isDisplayed()));
    onView(withId(R.id.login_button)).check(matches(isDisplayed()));
  }
}