File: spin-eventloop-not-longtask.html

package info (click to toggle)
firefox-esr 140.4.0esr-1~deb13u1
  • links: PTS, VCS
  • area: main
  • in suites:
  • size: 4,539,284 kB
  • sloc: cpp: 7,381,286; javascript: 6,388,710; ansic: 3,710,139; python: 1,393,780; xml: 628,165; asm: 426,916; java: 184,004; sh: 65,742; makefile: 19,302; objc: 13,059; perl: 12,912; yacc: 4,583; cs: 3,846; pascal: 3,352; lex: 1,720; ruby: 1,226; exp: 762; php: 436; lisp: 258; awk: 247; sql: 66; sed: 54; csh: 10
file content (25 lines) | stat: -rw-r--r-- 877 bytes parent folder | download | duplicates (18) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
<!DOCTYPE HTML>
<meta charset=utf-8>
<title>LongTask Timing: synchronous XHR</title>
<body>

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/utils.js"></script>
<link rel="stylesheet" href="/resource-timing/resources/delay-css.py?delay=1000" />
<h1>Long Task: Spin event loop</h1>
<div id="log"></div>
<script>
setup(() => assert_implements(window.PerformanceLongTaskTiming, 'Longtasks are not supported.'));

promise_test(async t => {
    const didReceiveLongTask = false;
    new PerformanceObserver(() => {
        didReceiveLongTask = true;
    }).observe({entryTypes: ['longtask']});

    await new Promise(resolve => window.addEventListener('load', resolve));
    assert_false(didReceiveLongTask);
}, 'Waiting for load event (spinning an event loop), is not a longtask');
</script>
</body>