forked from mirrors/gecko-dev
65 lines
1.9 KiB
JavaScript
65 lines
1.9 KiB
JavaScript
"use strict";
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const TOPIC = "browsing-context-discarded";
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async function observeDiscarded(browsingContexts, callback) {
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let discarded = [];
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let promise = BrowserUtils.promiseObserved(TOPIC, subject => {
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ok(subject instanceof BrowsingContext, "subject to be a BrowsingContext");
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discarded.push(subject);
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return browsingContexts.every(item => discarded.includes(item));
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});
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await callback();
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await promise;
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return discarded;
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}
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add_task(async function toplevelForNewWindow() {
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let win = await BrowserTestUtils.openNewBrowserWindow();
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let browsingContext = win.gBrowser.selectedBrowser.browsingContext;
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await observeDiscarded([win.browsingContext, browsingContext], async () => {
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await BrowserTestUtils.closeWindow(win);
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});
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});
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add_task(async function toplevelForNewTab() {
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let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser);
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let browsingContext = tab.linkedBrowser.browsingContext;
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let discarded = await observeDiscarded([browsingContext], () => {
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BrowserTestUtils.removeTab(tab);
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});
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ok(
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!discarded.includes(window.browsingContext),
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"no notification for the current window's chrome browsing context"
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);
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});
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add_task(async function subframe() {
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let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser);
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let browsingContext = await SpecialPowers.spawn(tab.linkedBrowser, [], () => {
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let iframe = content.document.createElement("iframe");
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content.document.body.appendChild(iframe);
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iframe.contentWindow.location = "https://example.com/";
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return iframe.browsingContext;
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});
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let discarded = await observeDiscarded([browsingContext], async () => {
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await SpecialPowers.spawn(tab.linkedBrowser, [], () => {
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let iframe = content.document.querySelector("iframe");
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iframe.remove();
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});
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});
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ok(
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!discarded.includes(tab.browsingContext),
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"no notification for toplevel browsing context"
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);
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BrowserTestUtils.removeTab(tab);
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});
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