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122 lines
4.0 KiB
HTML
122 lines
4.0 KiB
HTML
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<!doctype html>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=77992
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-->
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<head>
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<meta charset="utf-8">
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<title>Test for Event.timeStamp (Bug 77992)</title>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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</head>
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<body>
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<a target="_blank"
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href="https://bugzilla.mozilla.org/show_bug.cgi?id=77992">Mozilla Bug 77992</a>
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<p id="display"></p>
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<pre id="test">
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<script type="text/js-worker" id="worker-src">
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// Simply returns the event timestamp
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onmessage = function(evt) {
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postMessage(evt.timeStamp);
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}
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</script>
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<script type="text/js-worker" id="shared-worker-src">
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// Simply returns the event timestamp
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onconnect = function(evt) {
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var port = evt.ports[0];
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port.onmessage = function(messageEvt) {
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port.postMessage(messageEvt.timeStamp);
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};
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};
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</script>
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<script type="application/javascript">
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"use strict";
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SimpleTest.waitForExplicitFinish();
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SimpleTest.requestFlakyTimeout("untriaged");
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// We don't use SpecialPowers.pushPrefEnv since it can delay the test
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// function until after the load event has fired which means we can't
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// test the timestamp of the load event.
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const kPrefName = "dom.event.highrestimestamp.enabled";
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var prevPrefValue = SpecialPowers.getBoolPref(kPrefName);
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SpecialPowers.setBoolPref(kPrefName, true);
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testRegularEvents();
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// Event.timeStamp should be relative to the time origin which is:
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//
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// Non-worker context: navigation start
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// Dedicated worker: navigation start of the document that created the worker
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// Shared worker: creation time of the shared worker
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//
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// See: https://w3c.github.io/web-performance/specs/HighResolutionTime2/Overview.html#sec-time-origin
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function testRegularEvents() {
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if (document.readyState === "complete") {
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ok(false, "Onload event has already fired");
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finishTests();
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return;
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}
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var timeBeforeEvent = window.performance.now();
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window.addEventListener("load", function(evt) {
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var timeAfterEvent = window.performance.now();
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ok(evt.timeStamp > timeBeforeEvent &&
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evt.timeStamp < timeAfterEvent,
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"Event timestamp (" + evt.timeStamp + ") is in expected range: (" +
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timeBeforeEvent + ", " + timeAfterEvent + ")");
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testWorkerEvents();
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});
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}
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function testWorkerEvents() {
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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 worker = new Worker(window.URL.createObjectURL(blob));
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worker.onmessage = function(evt) {
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var timeAfterEvent = window.performance.now();
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ok(evt.data > timeBeforeEvent &&
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evt.data < timeAfterEvent,
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"Event timestamp in dedicated worker (" + evt.data +
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") is in expected range: (" +
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timeBeforeEvent + ", " + timeAfterEvent + ")");
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worker.terminate();
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testSharedWorkerEvents();
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};
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var timeBeforeEvent = window.performance.now();
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worker.postMessage("");
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}
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function testSharedWorkerEvents() {
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var blob =
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new Blob([ document.getElementById("shared-worker-src").textContent ],
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{ type: "text/javascript" });
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// Delay creation of worker slightly so it is easier to distinguish
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// shared worker creation time from this document's navigation start
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window.setTimeout(function() {
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var timeBeforeWorkerCreation = window.performance.now();
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var worker = new SharedWorker(window.URL.createObjectURL(blob));
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worker.port.onmessage = function(evt) {
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var timeAfterEvent = window.performance.now();
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ok(evt.data > 0 &&
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evt.data < timeAfterEvent - timeBeforeWorkerCreation,
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"Event timestamp in shared worker (" + evt.data +
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") is in expected range: (0, " +
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(timeAfterEvent - timeBeforeWorkerCreation) + ")");
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worker.port.close();
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finishTests();
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};
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worker.port.start();
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worker.port.postMessage("");
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}, 500);
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}
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var finishTests = function() {
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SpecialPowers.setBoolPref(kPrefName, prevPrefValue);
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SimpleTest.finish();
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};
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</script>
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</pre>
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</body>
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</html>
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