зеркало из https://github.com/mozilla/gecko-dev.git
77 строки
2.4 KiB
HTML
77 строки
2.4 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<title>Test for performance.timeOrigin</title>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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</head>
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<body>
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<script type="text/js-worker" id="worker-src">
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postMessage({ now: performance.now(), timeOrigin: performance.timeOrigin });
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</script>
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<script type="text/js-worker" id="shared-worker-src">
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onconnect = function(evt) {
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evt.ports[0].postMessage({ now: performance.now(), timeOrigin: performance.timeOrigin });
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};
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</script>
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<script class="testbody" type="text/javascript">
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function testBasic() {
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ok("timeOrigin" in performance, "Performance.timeOrigin exists.");
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ok(performance.timeOrigin > 0, "TimeOrigin must be greater than 0.");
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next();
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}
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function testWorker() {
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var now = performance.now();
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var blob = new Blob([ document.getElementById("worker-src").textContent ],
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{ type: "text/javascript" });
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var w = new Worker(URL.createObjectURL(blob));
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w.onmessage = function(e) {
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ok (e.data.now + e.data.timeOrigin > now + performance.timeOrigin, "Comparing worker.now and window.now");
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next();
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}
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}
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function testSharedWorker() {
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var now = performance.now();
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var blob = new Blob([ document.getElementById("shared-worker-src").textContent ],
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{ type: "text/javascript" });
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var w = new SharedWorker(URL.createObjectURL(blob));
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w.port.onmessage = function(e) {
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ok (e.data.now + e.data.timeOrigin > now + performance.timeOrigin, "Comparing worker.now and window.now");
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next();
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}
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}
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var tests = [ testBasic, testWorker, testSharedWorker ];
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function next() {
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if (!tests.length) {
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SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", reduceTimePrecisionPrevPrefValue);
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SimpleTest.finish();
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return;
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}
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var test = tests.shift();
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test();
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}
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SimpleTest.waitForExplicitFinish();
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// It is a known issue that comparing time between a worker and a window
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// when timer clamping is in effect may cause time to go backwards.
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// Do not run this test with this preference set. For large values of
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// clamping you will see failures. For small values, it is intermitant.
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var reduceTimePrecisionPrevPrefValue = SpecialPowers.getBoolPref("privacy.reduceTimerPrecision");
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SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", false);
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addLoadEvent(next);
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</script>
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</pre>
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</body>
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</html>
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