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"use strict";
const TEST_PATH =
getRootDirectory(gTestPath).replace(
"chrome://mochitests/content",
"http://example.com"
) + "dummy_page.html";
const TOPIC = "browsing-context-attached";
async function observeAttached(callback) {
let attached = [];
function observer(subject, topic) {
is(topic, TOPIC, "observing correct topic");
ok(subject instanceof BrowsingContext, "subject to be a BrowsingContext");
info(`*** bc id: ${subject.id}`);
attached.push(subject);
}
Services.obs.addObserver(observer, TOPIC);
try {
await callback();
return attached;
} finally {
Services.obs.removeObserver(observer, TOPIC);
}
}
add_task(async function toplevelForNewWindow() {
let win;
let attached = await observeAttached(async () => {
win = await BrowserTestUtils.openNewBrowserWindow();
});
ok(
attached.includes(win.browsingContext),
"got notification for window's chrome browsing context"
);
ok(
attached.includes(win.gBrowser.selectedBrowser.browsingContext),
"got notification for toplevel browsing context"
);
await BrowserTestUtils.closeWindow(win);
});
add_task(async function toplevelForNewTab() {
let tab;
let attached = await observeAttached(async () => {
tab = await BrowserTestUtils.openNewForegroundTab(gBrowser);
});
ok(
!attached.includes(window.browsingContext),
"no notification for the current window's chrome browsing context"
);
ok(
attached.includes(tab.linkedBrowser.browsingContext),
"got notification for toplevel browsing context"
);
BrowserTestUtils.removeTab(tab);
});
add_task(async function subframe() {
let browsingContext;
let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser);
let attached = await observeAttached(async () => {
browsingContext = await SpecialPowers.spawn(tab.linkedBrowser, [], () => {
let iframe = content.document.createElement("iframe");
content.document.body.appendChild(iframe);
iframe.contentWindow.location = "https://example.com/";
return iframe.browsingContext;
});
});
ok(
!attached.includes(window.browsingContext),
"no notification for the current window's chrome browsing context"
);
ok(
!attached.includes(tab.linkedBrowser.browsingContext),
"no notification for toplevel browsing context"
);
ok(
attached.includes(browsingContext),
"got notification for frame's browsing context"
);
BrowserTestUtils.removeTab(tab);
});
add_task(async function toplevelReplacedBy() {
let tab;
let attached = await observeAttached(async () => {
tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, "about:robots");
});
const firstContext = tab.linkedBrowser.browsingContext;
ok(
attached.includes(firstContext),
"got notification for initial toplevel browsing context"
);
attached = await observeAttached(async () => {
await loadURI(TEST_PATH);
});
const secondContext = tab.linkedBrowser.browsingContext;
ok(
attached.includes(secondContext),
"got notification for replaced toplevel browsing context"
);
isnot(secondContext, firstContext, "browsing context to be replaced");
is(
secondContext.browserId,
firstContext.browserId,
"browserId has been kept"
);
attached = await observeAttached(async () => {
await loadURI("about:robots");
});
const thirdContext = tab.linkedBrowser.browsingContext;
ok(
attached.includes(thirdContext),
"got notification for replaced toplevel browsing context"
);
isnot(thirdContext, secondContext, "browsing context to be replaced");
is(
thirdContext.browserId,
secondContext.browserId,
"browserId has been kept"
);
BrowserTestUtils.removeTab(tab);
});
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