fune/browser/base/content/test/general/browser_favicon_change.js

41 lines
1.4 KiB
JavaScript

/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
const TEST_URL = "http://mochi.test:8888/browser/browser/base/content/test/general/file_favicon_change.html"
add_task(async function() {
let extraTab = gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser);
extraTab.linkedBrowser.loadURI(TEST_URL);
let tabLoaded = BrowserTestUtils.browserLoaded(extraTab.linkedBrowser);
let expectedFavicon = "http://example.org/one-icon";
let haveChanged = PromiseUtils.defer();
let observer = new MutationObserver(function(mutations) {
for (let mut of mutations) {
if (mut.attributeName != "image") {
continue;
}
let imageVal = extraTab.getAttribute("image").replace(/#.*$/, "");
if (!imageVal) {
// The value gets removed because it doesn't load.
continue;
}
is(imageVal, expectedFavicon, "Favicon image should correspond to expected image.");
haveChanged.resolve();
}
});
observer.observe(extraTab, {attributes: true});
await tabLoaded;
await haveChanged.promise;
haveChanged = PromiseUtils.defer();
expectedFavicon = "http://example.org/other-icon";
ContentTask.spawn(extraTab.linkedBrowser, null, function() {
let ev = new content.CustomEvent("PleaseChangeFavicon", {});
content.dispatchEvent(ev);
});
await haveChanged.promise;
observer.disconnect();
gBrowser.removeTab(extraTab);
});