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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
const ORIGIN =
add_task(async function test_fullscreen_cross_origin() {
async function requestFullscreen(aAllow, aExpect) {
await BrowserTestUtils.withNewTab(ORIGIN, async function (browser) {
const iframeId = aExpect == "allowed" ? "frameAllowed" : "frameDenied";
info("Start fullscreen on iframe " + iframeId);
await SpecialPowers.spawn(
browser,
[{ aExpect, iframeId }],
async function (args) {
let frame = content.document.getElementById(args.iframeId);
frame.focus();
await SpecialPowers.spawn(frame, [args.aExpect], async expect => {
let frameDoc = content.document;
const waitForFullscreen = new Promise(resolve => {
const message =
expect == "allowed" ? "fullscreenchange" : "fullscreenerror";
function handler(evt) {
frameDoc.removeEventListener(message, handler);
Assert.equal(evt.type, message, `Request should be ${expect}`);
frameDoc.exitFullscreen();
resolve();
}
frameDoc.addEventListener(message, handler);
});
frameDoc.getElementById("request").click();
await waitForFullscreen;
});
}
);
if (aExpect == "allowed") {
waitForFullScreenState(browser, false);
}
});
}
await new Promise(r => {
SpecialPowers.pushPrefEnv(
{
set: [
["full-screen-api.enabled", true],
["full-screen-api.allow-trusted-requests-only", false],
["full-screen-api.transition-duration.enter", "0 0"],
["full-screen-api.transition-duration.leave", "0 0"],
["dom.security.featurePolicy.header.enabled", true],
["dom.security.featurePolicy.webidl.enabled", true],
],
},
r
);
});
await requestFullscreen(undefined, "denied");
await requestFullscreen("fullscreen", "allowed");
});