issue_comments: 451704724

I found a really nice pattern for writing the unit tests for this (though it would look even nicer with a solution to #395) python @pytest.mark.parametrize("prefix", ["/prefix/", "https://example.com/"]) @pytest.mark.parametrize("path", [ "/", "/fixtures", "/fixtures/compound_three_primary_keys", "/fixtures/compound_three_primary_keys/a,a,a", "/fixtures/paginated_view", ]) def test_url_prefix_config(prefix, path): for client in make_app_client(config={ "url_prefix": prefix, }): response = client.get(path) soup = Soup(response.body, "html.parser") for a in soup.findAll("a"): href = a["href"] if href not in { "https://github.com/simonw/datasette", "https://github.com/simonw/datasette/blob/master/LICENSE", "https://github.com/simonw/datasette/blob/master/tests/fixtures.py", }: assert href.startswith(prefix), (href, a.parent)