@Test
  public void getActivityForActivePlaceRequestShouldReturnActivity() throws Exception {
    Activity activity =
        activityManager.getActivity(Activity.class, new DefaultPlaceRequest("activated activity"));

    assertSame(activatedActivity, activity);
  }
  @Test
  public void getActivityForInactivePlaceRequestShouldReturnNull() throws Exception {
    Activity activity =
        activityManager.getActivity(
            Activity.class, new DefaultPlaceRequest("non-activated activity"));

    assertNull(activity);
  }