Add API test to ensure URLs are generated

        self._assert_has_keys(state_details, *states)

        self._assert_has_keys(state_ids, *states)

    def test_show_history_returns_expected_urls(self):

        # This test can be dropped when the URL attributes become deprecated

        history_id = self._create_history("TestHistoryForUrls")["id"]

        show_response = self._show(history_id)

        self._assert_has_key(show_response, 'id', 'url', 'contents_url')

        assert show_response["url"] == f"/api/histories/{history_id}"

        assert show_response["contents_url"] == f"/api/histories/{history_id}/contents"

    def test_show_most_recently_used(self):

        history_id = self._create_history("TestHistoryRecent")["id"]

        show_response = self._get("histories/most_recently_used").json()