def test_search_does_not_return_copied_pages(self):
        home_page = Page.objects.get(slug='home')
        bieber_article = Page(
            title='Justin Bieber',
            slug='justin-bieber'
        )
        home_page.add_child(instance=bieber_article)
        bieber_article_copy = bieber_article.copy(
            update_attrs={'slug': 'justin-bieber-copy'}
        )

        result = pg_full_text_search('Justin Bieber', home_page)

        assert list(result) == [bieber_article]