@Test
 public void shouldRecordPreferencesResourceId() {
   assertThat(shadow.getPreferencesResId()).isEqualTo(-1);
   activity.addPreferencesFromResource(R.xml.preferences);
   assertThat(shadow.getPreferencesResId()).isEqualTo(R.xml.preferences);
 }
 @Test
 public void shouldInitializeListViewInOnCreate() {
   shadow.callOnCreate(null);
   assertThat(activity.getListView()).isNotNull();
 }