promise_test(() => fetch("resources/urltestdata.json").then(res => res.json()).then(runURLTests), "Loading data…"); function setBase(base) { document.getElementById("base").href = base } function bURL(url, base) { base = base || "about:blank" setBase(base) var a = document.createElement("a") a.setAttribute("href", url) return a } function runURLTests(urltests) { for(var i = 0, l = urltests.length; i < l; i++) { var expected = urltests[i] if (typeof expected === "string" || !("origin" in expected)) continue // skip without base because you cannot unset the baseURL of a document if (expected.base === null) continue; test(function() { var url = bURL(expected.input, expected.base) assert_equals(url.origin, expected.origin, "origin") }, "Parsing origin: <" + expected.input + "> against <" + expected.base + ">") } }