mozilla-central/dom/base/test/fullscreen/browser_fullscreen-newtab.js (file symbol)

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Test Info: Warnings

"use strict";
// This test tends to trigger a race in the fullscreen time telemetry,
// where the fullscreen enter and fullscreen exit events (which use the
// same histogram ID) overlap. That causes TelemetryStopwatch to log an
// error.
SimpleTest.ignoreAllUncaughtExceptions(true);
const kPage =
"dom/base/test/fullscreen/file_fullscreen-newtab.html";
function getSizeMode() {
return document.documentElement.getAttribute("sizemode");
}
async function runTest() {
await BrowserTestUtils.withNewTab(
{
gBrowser,
url: kPage,
},
async function (browser) {
let promiseFsEvents = SpecialPowers.spawn(browser, [], function () {
return new Promise(resolve => {
let countFsChange = 0;
let countFsError = 0;
function checkAndResolve() {
if (countFsChange > 0 && countFsError > 0) {
Assert.ok(
false,
"Got both fullscreenchange and fullscreenerror events"
);
} else if (countFsChange > 2) {
Assert.ok(false, "Got too many fullscreenchange events");
} else if (countFsError > 1) {
Assert.ok(false, "Got too many fullscreenerror events");
} else if (countFsChange == 2 || countFsError == 1) {
resolve();
}
}
content.document.addEventListener("fullscreenchange", () => {
++countFsChange;
checkAndResolve();
});
content.document.addEventListener("fullscreenerror", () => {
++countFsError;
checkAndResolve();
});
});
});
let promiseNewTab = BrowserTestUtils.waitForNewTab(
gBrowser,
"about:blank"
);
await BrowserTestUtils.synthesizeMouseAtCenter("#link", {}, browser);
let [newtab] = await Promise.all([promiseNewTab, promiseFsEvents]);
await BrowserTestUtils.removeTab(newtab);
// Ensure the browser exits fullscreen state in reasonable time.
await Promise.race([
BrowserTestUtils.waitForCondition(() => getSizeMode() == "normal"),
// eslint-disable-next-line mozilla/no-arbitrary-setTimeout
new Promise(resolve => setTimeout(resolve, 2000)),
]);
ok(!window.fullScreen, "The chrome window should not be in fullscreen");
ok(
!document.fullscreen,
"The chrome document should not be in fullscreen"
);
}
);
}
add_task(async function () {
await pushPrefs(
["full-screen-api.transition-duration.enter", "0 0"],
["full-screen-api.transition-duration.leave", "0 0"]
);
await runTest();
});
add_task(async function () {
await pushPrefs(
["full-screen-api.transition-duration.enter", "200 200"],
["full-screen-api.transition-duration.leave", "200 200"]
);
await runTest();
});