@Test
public void testUpdateDataSet() throws IllegalAccessException, NoSuchFieldException {
chatActivity.onResume();
chatActivity.showMessage("test");
assertTrue(recyclerView.hasPendingAdapterUpdates());
chatActivity.updateDataSet();
// assertFalse(recyclerView.hasPendingAdapterUpdates());
chatActivity.onStop();
}
@Override
public void onResume() {
super.onResume();
signaller.setObserver(this);
}