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Test Info: Warnings
-
CI results over the last 21 days
- This test gets skipped with pattern: !fission
- Manifest: docshell/test/browser/browser.toml
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Checks that a traversal that restores a page from BFCache fires pageswap
// with the target entry in the outgoing page, and that a process which hosts
// only a cross-origin iframe of the outgoing page does not get that entry.
// ContentChild::RecvDeactivateDocuments asserts the latter, which would crash
// the process of the iframe.
const TEST_URL =
getRootDirectory(gTestPath).replace(
) + "dummy_page.html";
const FRAME_URL = TEST_URL.replace("example.com", "example.org");
function waitForTopPageShow(browser) {
return BrowserTestUtils.waitForContentEvent(
browser,
"pageshow",
true,
event => event.target.defaultView === event.target.defaultView.top
);
}
add_task(async function test_pageswap_target_entry_stays_in_owner_process() {
await SpecialPowers.pushPrefEnv({
set: [
["fission.bfcacheInParent", true],
["browser.sessionhistory.max_total_viewers", 10],
["dom.navigation.webidl.enabled", true],
["dom.viewTransitions.cross-document.enabled", true],
],
});
const oldURL = TEST_URL + "?old";
const newURL = TEST_URL + "?new";
await BrowserTestUtils.withNewTab(oldURL, async browser => {
const loaded = BrowserTestUtils.browserLoaded(browser, false, newURL);
BrowserTestUtils.startLoadingURIString(browser, newURL);
await loaded;
// The cross-origin iframe must be in the page that is current when the
// traversal starts, so that its process gets the deactivation message.
await SpecialPowers.spawn(browser, [FRAME_URL], async url => {
content.addEventListener("pageswap", event => {
content.wrappedJSObject.pageSwap = {
type: event.activation?.navigationType,
url: event.activation?.entry?.url,
};
});
content.addEventListener("pageshow", event => {
content.wrappedJSObject.wasRestored = event.persisted;
});
const iframe = content.document.createElement("iframe");
iframe.src = url;
const iframeLoaded = new Promise(resolve => {
iframe.addEventListener("load", resolve, { once: true });
});
content.document.body.appendChild(iframe);
await iframeLoaded;
});
const frame = browser.browsingContext.children[0];
const topPID = await SpecialPowers.spawn(browser, [], () => {
return Services.appinfo.processID;
});
const framePID = await SpecialPowers.spawn(frame, [], () => {
content.addEventListener("pageshow", event => {
content.wrappedJSObject.wasRestored = event.persisted;
});
return Services.appinfo.processID;
});
isnot(framePID, topPID, "The cross-origin iframe has a separate process");
let shown = waitForTopPageShow(browser);
browser.goBack();
await shown;
is(browser.currentURI.spec, oldURL, "Back restored the old URL");
// Go forward to read what the page with the iframe saw.
shown = waitForTopPageShow(browser);
browser.goForward();
await shown;
is(browser.currentURI.spec, newURL, "Forward restored the new URL");
const pageSwap = await SpecialPowers.spawn(browser, [], () => {
ok(content.wrappedJSObject.wasRestored, "The page came from BFCache");
return content.wrappedJSObject.pageSwap;
});
is(pageSwap?.type, "traverse", "pageswap fired for the traversal");
is(
pageSwap?.url,
oldURL,
"The owner process still receives the target entry for pageswap"
);
await SpecialPowers.spawn(frame, [], () => {
ok(
content.wrappedJSObject.wasRestored,
"The iframe and its process survived and came from BFCache"
);
});
});
});