def test_up(self, url_suffix, count, expected_suffix):
        url_base = 'https://example.com'
        url = QUrl(url_base + url_suffix)
        assert url.isValid()

        new = navigate.path_up(url, count)
        assert new == QUrl(url_base + expected_suffix)
 def test_invalid_url(self):
     with pytest.raises(urlutils.InvalidUrlError):
         navigate.path_up(QUrl(), count=1)