| Noam Rosenthal | c9657a4 | 2022-04-12 10:46:58 | [diff] [blame] | 1 | <!DOCTYPE HTML> |
| 2 | <meta charset=utf-8> |
| 3 | <title>LongTask Timing: synchronous XHR</title> |
| 4 | <body> |
| 5 | |
| 6 | <script src="/resources/testharness.js"></script> |
| 7 | <script src="/resources/testharnessreport.js"></script> |
| 8 | <script src="resources/utils.js"></script> |
| 9 | <link rel="stylesheet" href="/resource-timing/resources/delay-css.py?delay=1000" /> |
| 10 | <h1>Long Task: Spin event loop</h1> |
| 11 | <div id="log"></div> |
| 12 | <script> |
| 13 | setup(() => assert_implements(window.PerformanceLongTaskTiming, 'Longtasks are not supported.')); |
| 14 | |
| 15 | promise_test(async t => { |
| 16 | const didReceiveLongTask = false; |
| 17 | new PerformanceObserver(() => { |
| 18 | didReceiveLongTask = true; |
| 19 | }).observe({entryTypes: ['longtask']}); |
| 20 | |
| 21 | await new Promise(resolve => window.addEventListener('load', resolve)); |
| 22 | assert_false(didReceiveLongTask); |
| 23 | }, 'Waiting for load event (spinning an event loop), is not a longtask'); |
| 24 | </script> |
| 25 | </body> |
