    @Test
    public void loadSpinnerDataWhenDataEmpty() throws Exception {

        mMainPresenter.loadSpinnerData();
        Mockito.verify(mMainModel).loadSpinnerData();
        List<String> data = new ArrayList<>();
        Mockito.when(mMainModel.loadSpinnerData()).thenReturn(data);
        Mockito.verify(mMainView).showErrorMsg();
    }