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Test Info:
- Manifest: docshell/test/browser/browser.toml
"use strict";
const TEST_PATH =
getRootDirectory(gTestPath).replace(
// eslint-disable-next-line @microsoft/sdl/no-insecure-url
) + "dummy_page.html";
const TOPIC = "browsing-context-attached";
async function observeAttached(callback) {
let attached = new Map();
function observer(subject, topic, data) {
is(topic, TOPIC, "observing correct topic");
ok(BrowsingContext.isInstance(subject), "subject to be a BrowsingContext");
is(typeof data, "string", "data to be a String");
info(`*** bc id=${subject.id}, why=${data}`);
attached.set(subject.id, { browsingContext: subject, why: data });
}
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.has(win.browsingContext.id),
"got notification for window's chrome browsing context"
);
is(
attached.get(win.browsingContext.id).why,
"attach",
"expected reason for chrome browsing context"
);
ok(
attached.has(win.gBrowser.selectedBrowser.browsingContext.id),
"got notification for toplevel browsing context"
);
is(
attached.get(win.gBrowser.selectedBrowser.browsingContext.id).why,
"attach",
"expected reason 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.has(window.browsingContext.id),
"no notification for the current window's chrome browsing context"
);
ok(
attached.has(tab.linkedBrowser.browsingContext.id),
"got notification for toplevel browsing context"
);
is(
attached.get(tab.linkedBrowser.browsingContext.id).why,
"attach",
"expected reason 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);
return iframe.browsingContext;
});
});
ok(
!attached.has(window.browsingContext.id),
"no notification for the current window's chrome browsing context"
);
ok(
!attached.has(tab.linkedBrowser.browsingContext.id),
"no notification for toplevel browsing context"
);
ok(
attached.has(browsingContext.id),
"got notification for frame's browsing context"
);
is(
attached.get(browsingContext.id).why,
"attach",
"expected reason 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.has(firstContext.id),
"got notification for initial toplevel browsing context"
);
is(
attached.get(firstContext.id).why,
"attach",
"expected reason for initial toplevel browsing context"
);
attached = await observeAttached(async () => {
await loadURI(TEST_PATH);
});
const secondContext = tab.linkedBrowser.browsingContext;
ok(
attached.has(secondContext.id),
"got notification for replaced toplevel browsing context"
);
isnot(secondContext, firstContext, "browsing context to be replaced");
is(
attached.get(secondContext.id).why,
"replace",
"expected reason for replaced toplevel browsing context"
);
is(
secondContext.browserId,
firstContext.browserId,
"browserId has been kept"
);
attached = await observeAttached(async () => {
await loadURI("about:robots");
});
const thirdContext = tab.linkedBrowser.browsingContext;
ok(
attached.has(thirdContext.id),
"got notification for replaced toplevel browsing context"
);
isnot(thirdContext, secondContext, "browsing context to be replaced");
is(
attached.get(thirdContext.id).why,
"replace",
"expected reason for replaced toplevel browsing context"
);
is(
thirdContext.browserId,
secondContext.browserId,
"browserId has been kept"
);
BrowserTestUtils.removeTab(tab);
});