@Test
public void testGetNoResultsFoundCallback() {

    final GridWidget gridWidget = mock(GridWidget.class);
    final GridData gridData = mock(GridData.class);
    when(modellerView.getGridWidgets()).thenReturn(new HashSet<>(singletonList(gridWidget)));
    when(gridWidget.getModel()).thenReturn(gridData);
    presenter.getNoResultsFoundCallback().execute();
    verify(gridData).clearSelections();
    verify(gridWidget).draw();
}