Chariot Blog Android Unit Testing With Robolectric

Activity Start,java

@Test
public void buttonClickShouldStartNewActivity() throws Exception {
    button.performClick();
    Intent intent = NewActivity.createIntent(activity);
    assertThat(activity, new StartedMatcher(intent));
}

Activity Startjava

@Test
public void buttonClickShouldStartNewActivity() throws Exception {
    button.performClick();
    Intent intent = NewActivity.createIntent(activity);
    assertThat(activity, new StartedMatcher(intent));
}

ActivityStart.java

@Test
public void buttonClickShouldStartNewActivity() throws Exception {
    Button button = activity.findViewById(R.id.next_screen_button);
    button.performClick();
    Intent intent = NewActivity.createIntent(activity);
    assertThat(activity, new StartedMatcher(intent));
}

DrawableResource.java

@Test
public void imageShouldEqualResourceDrawable() throws Exception {
    ImageView image = (ImageView) activity.findViewById(R.id.sun_earth_image);
    assertThat(image.getDrawable(),
               equalTo(getResourceDrawable(R.drawable.sun_earth)));
}

Nullness.java

@Test
public void shouldNotBeNull() throws Exception {
    MyActivity activity = new MyActivity();
    assertNotNull(activity);
}

Presence.java

@Test
public void shouldHaveWelcomeText() throws Exception {
    TextView welcomeText = (TextView) activity.findViewById(R.id.welcome_text_view);    
    assertViewIsVisible(welcomeText);
}

ProjectTestRunner.java

public class ProjectTestRunner extends RobolectricTestRunner {

    public ProjectTestRunner(Class<?> testClass) throws InitializationError {
        super(testClass);
    }

    public static String getResourceString(int resourceId) {
        return Robolectric.application.getApplicationContext().getString(resourceId);
    }

    public static Drawable getResourceDrawable(int resourceId) {
        return Robolectric.application.getApplicationContext().getResources().getDrawable(resourceId);
    }

    public static void assertViewIsVisible(View view) {
        assertNotNull(view);
        assertThat(view.getVisibility(), equalTo(View.VISIBLE));
    }

    public static void assertViewIsHidden(View view) {
        assertNotNull(view);
        assertThat(view.getVisibility(), equalTo(View.GONE));
    }
}

RevealFunctionality.java

@Before
public void setUp() throws Exception {
    activity = new MyActivity();
    activity.onCreate(null);

    image = (ImageView) activity.findViewById(R.id.sun_earth_image);
    button = activity.findViewById(R.id.next_screen_button);
}

@Test
public void shouldHaveHiddenButton() throws Exception {
    Button button = activity.findViewById(R.id.next_screen_button);
    assertViewIsHidden(button);
}

@Test
public void shouldShowButtonAfterImageClick() throws Exception {
    image.performClick();
    assertViewIsVisible(button);
}

StringResource.java

@Test
public void welcomeTextShouldEqualResource() throws Exception {
    TextView welcomeText = (TextView) activity.findViewById(R.id.welcome_text_view);    
    assertThat(welcomeText.getText().toString(),
               equalTo(getResourceString(R.string.WELCOME_STRING)));
}

Toasting.java

@Test
public void welcomeTextClickShouldToastUser() throws Exception {
    TextView welcomeText = (TextView) activity.findViewById(R.id.welcome_text_view);    
    welcomeText.performClick();
    assertThat(getTextOfLatestToast(),
               equalTo(getResourceString(R.string.WELCOME_TOAST)));
}