| <!doctype html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <script> |
| |
| promise_test(async () => { |
| function createReadStream() { |
| const response = new Response(new Blob(['aaaaa'])); |
| return response.body; |
| } |
| |
| const f = document.body.appendChild(document.createElement('iframe')); |
| const response = new f.contentWindow.Response(createReadStream()); |
| |
| f.contentWindow.Object.prototype.__defineGetter__('then', () => { |
| delete f.contentWindow.Object.prototype.then; |
| |
| f.remove(); |
| }); |
| |
| response.blob(); |
| |
| await new Promise(resolve => setTimeout(resolve, 50)); |
| }, "Ensure redefining then does not alter blob promise"); |
| |
| </script> |
| </body> |
| </html> |
