| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>Worker: Worker.postMessage() on a detached iframe</title> |
| <body> |
| </body> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <script> |
| |
| function with_iframe(url) { |
| return new Promise(resolve => { |
| let frame = document.createElement('iframe'); |
| frame.src = url; |
| frame.onload = () => { resolve(frame); }; |
| document.body.appendChild(frame); |
| add_result_callback(() => frame.remove()); |
| }); |
| } |
| |
| // This test should not be upstreamed to WPT because the spec does not define |
| // behavior in the case where Worker.postMessage() is called from a detached |
| // frame. |
| promise_test(async t => { |
| const frame = await with_iframe('resources/blank.html'); |
| const worker = new frame.contentWindow.Worker('resources/empty.js'); |
| frame.remove(); |
| try { |
| worker.postMessage('hello'); |
| } catch (e) { |
| assert_unreached(); |
| } |
| }, 'Worker.postMessage() on a detached iframe should not throw an exception ' + |
| 'nor crash.'); |
| |
| </script> |
