Diego
8486084e1f
Automatic update from web-platform-tests WebKit export of https://bugs.webkit.org/show_bug.cgi?id=307571 (#57940) -- wpt-commits: b235049435c4e3907378f89165fa1708159a9266 wpt-pr: 57940
48 lines
2.0 KiB
HTML
48 lines
2.0 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>window.performance.now in shared workers</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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</head>
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<body>
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<script>
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async_test(function(t) {
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const worker = new SharedWorker('support/WorkerSendingPerformanceNow.js');
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worker.port.onmessage = t.step_func(event => {
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const results = event.data;
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assert_equals(results.length, 4);
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assert_equals(results[0], 'undefined',
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'workerStart not defined on the Worker object');
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assert_equals(results[1], 'object', 'self.performance is defined');
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assert_equals(results[2], 'function', 'self.performance.now is defined');
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assert_greater_than_equal(results[3], 0, 'Time in the worker should be non-negative');
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assert_greater_than(window.performance.now(), results[3], 'Time in the worker should be before the current time in the main document');
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setupIframe();
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});
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window.iframeStartTime = 0;
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window.test_iframe = function(event) {
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const workerTime = event.data[3];
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assert_greater_than(workerTime, window.iframeStartTime,
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'Time since origin time should be greater in the shared worker than the iframe');
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t.done();
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}
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function setupIframe() {
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const iframe = document.createElement('iframe');
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document.body.appendChild(iframe);
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const script = iframe.contentWindow.document.createElement('script');
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script.innerHTML =
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'window.top.iframeStartTime = window.performance.now();' +
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'const worker = new SharedWorker("support/WorkerSendingPerformanceNow.js");' +
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'worker.port.onmessage = function(event) {' +
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' window.top.test_iframe(event);' +
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'};' +
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'worker.port.postMessage("");';
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iframe.contentWindow.document.body.appendChild(script);
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}
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worker.port.postMessage('');
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}, 'performance.now() exists in shared workers and reports reasonable times');
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</script>
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</body>
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</html>
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