@Test
public void testGivenZeroItemSelectedWhenUpdateToolbarThenDefaultIconShown() throws Exception {

    // Given
    int itemSelected = 0;
    int icon = 1;
    when(mMockMultiChoiceToolbar.getIcon()).thenReturn(icon);
    // When
    mCut.updateToolbar(itemSelected);
    // Then
    verify(mMockMultiChoiceToolbar, times(1)).getIcon();
    verify(mMockActionBar, times(1)).setHomeAsUpIndicator(icon);
    verify(mMockActionBar, times(1)).setDisplayHomeAsUpEnabled(true);
    verify(mMockToolbar, times(1)).setNavigationOnClickListener(mMockMultiChoiceToolbar.getIconAction());
}