@Before
  public void setUp() {
    mActivityController = Robolectric.buildActivity(MainActivity.class).create().start().resume();

    mActivity = mActivityController.get();
    sut = WordDetailsTranslationFragment.newInstance(TestHelper.createWord(), 1);

    SupportFragmentTestUtil.startVisibleFragment(sut);
  }
  public void testFragmentsStart() {

    fragment = new MainActivity.PlaceholderFragment().newInstance(1);
    assertNotNull("f is null", fragment);
    SupportFragmentTestUtil.startVisibleFragment(fragment);
    textView = (TextView) fragment.getView().findViewById(R.id.section_label);
    assertEquals("Fragment 1", textView.getText().toString());

    fragment = new MainActivity.PlaceholderFragment().newInstance(2);
    assertNotNull("f is null", fragment);
    SupportFragmentTestUtil.startVisibleFragment(fragment);
    textView = (TextView) fragment.getView().findViewById(R.id.section_label);
    assertEquals("Fragment 2", textView.getText().toString());

    fragment = new MainActivity.PlaceholderFragment().newInstance(3);
    assertNotNull("f is null", fragment);
    SupportFragmentTestUtil.startVisibleFragment(fragment);
    textView = (TextView) fragment.getView().findViewById(R.id.section_label);
    assertEquals("Fragment 3", textView.getText().toString());
  }