| <!doctype html> |
| <meta charset="utf-8"> |
| <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1646776"> |
| <link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez"> |
| <link rel="author" href="https://mozilla.org" title="Mozilla"> |
| <link rel="stylesheet" href="data:text/css,:root{background:green}"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| // Note that script execution waits for the stylesheet above to be loaded. |
| window.t = async_test("Stylesheets that are already loaded in the document don't cause spurious error events on preloads"); |
| let subdoc = document.createElement("iframe"); |
| subdoc.srcdoc = ` |
| <!doctype html> |
| <meta charset="utf-8"> |
| <link rel="preload" as="style" href="data:text/css,:root{background:green}" onload="parent.t.done()" onerror="parent.t.step(() => parent.assert_unreached('should not error'))"> |
| `; |
| document.body.appendChild(subdoc); |
| </script> |