@Test
public void getFirstSelectedItem_should_return_null_when_no_items_selected() throws Exception {
when(navigatorItems.getSelectedItems()).thenReturn(Collections.<SortNavigatorItem>emptyList());
SortNavigatorItem actual = sortNavigator.getFirstSelectedItem();
assertThat(actual, is(nullValue()));
}
@Test
public void getFirstSelectedItem_should_return_first_selected_item() throws Exception {
SortNavigatorItem expected = Mockito.mock(SortNavigatorItem.class);
when(navigatorItems.getSelectedItems()).thenReturn(Arrays.asList(expected));
SortNavigatorItem actual = sortNavigator.getFirstSelectedItem();
assertThat(actual, is(sameInstance(expected)));
}