| <!DOCTYPE html> |
| <meta charset=utf-8> |
| <meta name="timeout" content="long"> |
| <title>HTMLImageElement.prototype.decode(), attach to DOM before promise resolves.</title> |
| <link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org"> |
| <link rel=help href="https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-decode"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <body></body> |
| |
| <script> |
| "use strict"; |
| |
| promise_test(function() { |
| const img = new Image(); |
| img.src = "/images/green.png"; |
| const promise = img.decode().then(function(arg) { |
| assert_equals(arg, undefined); |
| }); |
| // Don't wait for the promise to resolve before attaching the image. |
| // The promise should still resolve successfully. |
| document.body.appendChild(img); |
| return promise; |
| }, document.title); |
| </script> |
