'list_display and list_editable can contain the same values
when list_display_links is None'

def test_list_display_links_is_none(self):

    class ProductAdmin(ModelAdmin, ):
        list_display = ['name', 'slug', 'pub_date']
        list_editable = list_display
        list_display_links = None
    self.assertIsValid(ProductAdmin, ValidationTestModel)
