gecko-dev/dom/base/test/browser_timeout_throttling_...

68 строки
2.4 KiB
JavaScript

// The tab closing code leaves an uncaught rejection. This test has been
// whitelisted until the issue is fixed.
if (!gMultiProcessBrowser) {
ChromeUtils.import("resource://testing-common/PromiseTestUtils.jsm", this);
PromiseTestUtils.expectUncaughtRejection(/is no longer, usable/);
}
const kBaseURI = "http://mochi.test:8888/browser/dom/base/test/empty.html";
const kPluginJS = "chrome://mochitests/content/browser/dom/base/test/plugin.js";
var testURLs = [
"http://mochi.test:8888/browser/dom/base/test/file_audioLoop.html",
"http://mochi.test:8888/browser/dom/base/test/file_audioLoopInIframe.html",
"http://mochi.test:8888/browser/dom/base/test/file_pluginAudio.html",
"http://mochi.test:8888/browser/dom/base/test/file_webaudio_startstop.html",
];
// We want to ensure that while audio is being played back, a background tab is
// treated the same as a foreground tab as far as timeout throttling is concerned.
// So we use a 100,000 second minimum timeout value for background tabs. This
// means that in case the test fails, it will time out in practice, but just for
// sanity the test condition ensures that the observed timeout delay falls in
// this range.
const kMinTimeoutBackground = 100 * 1000 * 1000;
const kDelay = 10;
Services.scriptloader.loadSubScript(kPluginJS, this);
async function runTest(url) {
let currentTab = gBrowser.selectedTab;
let newTab = await BrowserTestUtils.openNewForegroundTab(gBrowser, kBaseURI);
let newBrowser = gBrowser.getBrowserForTab(newTab);
// Wait for the UI to indicate that audio is being played back.
let promise = BrowserTestUtils.waitForAttribute("soundplaying", newTab, "true");
newBrowser.loadURI(url);
await promise;
// Put the tab in the background.
await BrowserTestUtils.switchTab(gBrowser, currentTab);
let timeout = await ContentTask.spawn(newBrowser, kDelay, function(delay) {
return new Promise(resolve => {
let before = new Date();
content.window.setTimeout(function() {
let after = new Date();
resolve(after - before);
}, delay);
});
});
ok(timeout <= kMinTimeoutBackground, `Got the correct timeout (${timeout})`);
// All done.
BrowserTestUtils.removeTab(newTab);
}
add_task(async function setup() {
await SpecialPowers.pushPrefEnv({"set": [
["dom.min_background_timeout_value", kMinTimeoutBackground],
]});
});
add_task(async function test() {
for (var url of testURLs) {
await runTest(url);
}
});