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// META: script=/common/dispatcher/dispatcher.js
// META: script=/common/get-host-info.sub.js
// META: script=/common/utils.js
// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
// META: script=/html/browsers/browsing-the-web/back-forward-cache/resources/rc-helper.js
// META: script=/pending-beacon/resources/pending_beacon-helper.js
'use strict';
// NOTE: Due to the restriction of WPT runner, the following tests are all run
// with BackgroundSync off, which is different from some browsers,
// e.g. Chrome, default behavior, as the testing infra does not support enabling
// it.
parallelPromiseTest(async t => {
const uuid = token();
const url = generateSetBeaconURL(uuid);
// Sets no option to test the default behavior when a document enters BFCache.
const helper = new RemoteContextHelper();
// Opens a window with noopener so that BFCache will work.
const rc1 = await helper.addWindow(
/*config=*/ null, /*options=*/ {features: 'noopener'});
// Creates a fetchLater request with default config in remote, which should
// only be sent on page discarded (not on entering BFCache).
await rc1.executeScript(url => {
fetchLater(url);
// Add a pageshow listener to stash the BFCache event.
window.addEventListener('pageshow', e => {
window.pageshowEvent = e;
});
}, [url]);
// Navigates away to let page enter BFCache.
const rc2 = await rc1.navigateToNew();
// Navigates back.
await rc2.historyBack();
// Verifies the page was BFCached.
assert_true(await rc1.executeScript(() => {
return window.pageshowEvent.persisted;
}));
// Theoretically, the request should still be pending thus 0 request received.
// However, 1 request is sent, as by default the WPT test runner, e.g.
// content_shell in Chromium, does not enable BackgroundSync permission,
// resulting in forcing request sending on every navigation.
await expectBeacon(uuid, {count: 1});
}, `fetchLater() sends on page entering BFCache if BackgroundSync is off.`);
parallelPromiseTest(async t => {
const uuid = token();
const url = generateSetBeaconURL(uuid);
const helper = new RemoteContextHelper();
// Opens a window with noopener so that BFCache will work.
const rc1 = await helper.addWindow(
/*config=*/ null, /*options=*/ {features: 'noopener'});
// When the remote is put into BFCached, creates a fetchLater request w/
// activateAfter = 0s. It should be sent out immediately.
await rc1.executeScript(url => {
window.addEventListener('pagehide', e => {
if (e.persisted) {
fetchLater(url, {activateAfter: 0});
}
});
// Add a pageshow listener to stash the BFCache event.
window.addEventListener('pageshow', e => {
window.pageshowEvent = e;
});
}, [url]);
// Navigates away to trigger request sending.
const rc2 = await rc1.navigateToNew();
// Navigates back.
await rc2.historyBack();
// Verifies the page was BFCached.
assert_true(await rc1.executeScript(() => {
return window.pageshowEvent.persisted;
}));
// NOTE: In this case, it does not matter if BackgroundSync is on or off.
await expectBeacon(uuid, {count: 1});
}, `Call fetchLater() when BFCached with activateAfter=0 sends immediately.`);
parallelPromiseTest(async t => {
const uuid = token();
const url = generateSetBeaconURL(uuid);
// Sets no option to test the default behavior when a document gets discarded
// on navigated away.
const helper = new RemoteContextHelper();
// Opens a window without BFCache.
const rc1 = await helper.addWindow();
// Creates a fetchLater request in remote which should only be sent on
// navigating away.
await rc1.executeScript(url => {
fetchLater(url);
// Add a pageshow listener to stash the BFCache event.
window.addEventListener('pageshow', e => {
window.pageshowEvent = e;
});
}, [url]);
// Navigates away to trigger request sending.
const rc2 = await rc1.navigateToNew();
// Navigates back.
await rc2.historyBack();
// Verifies the page was NOT BFCached.
assert_equals(undefined, await rc1.executeScript(() => {
return window.pageshowEvent;
}));
// NOTE: In this case, it does not matter if BackgroundSync is on or off.
await expectBeacon(uuid, {count: 1});
}, `fetchLater() sends on navigating away a page w/o BFCache.`);
parallelPromiseTest(async t => {
const uuid = token();
const url = generateSetBeaconURL(uuid);
// Sets no option to test the default behavior when a document gets discarded
// on navigated away.
const helper = new RemoteContextHelper();
// Opens a window without BFCache.
const rc1 = await helper.addWindow();
// Creates 2 fetchLater requests in remote, and one of them is aborted
// immediately. The other one should only be sent right on navigating away.
await rc1.executeScript(url => {
const controller = new AbortController();
fetchLater(url, {signal: controller.signal});
fetchLater(url);
controller.abort();
// Add a pageshow listener to stash the BFCache event.
window.addEventListener('pageshow', e => {
window.pageshowEvent = e;
});
}, [url]);
// Navigates away to trigger request sending.
const rc2 = await rc1.navigateToNew();
// Navigates back.
await rc2.historyBack();
// Verifies the page was NOT BFCached.
assert_equals(undefined, await rc1.executeScript(() => {
return window.pageshowEvent;
}));
// NOTE: In this case, it does not matter if BackgroundSync is on or off.
await expectBeacon(uuid, {count: 1});
}, `fetchLater() does not send aborted request on navigating away a page w/o BFCache.`);
parallelPromiseTest(async t => {
const uuid = token();
const url = generateSetBeaconURL(uuid);
const options = {activateAfter: 60000};
const helper = new RemoteContextHelper();
// Opens a window with noopener so that BFCache will work.
const rc1 = await helper.addWindow(
/*config=*/ null, /*options=*/ {features: 'noopener'});
// Creates a fetchLater request in remote which should only be sent on
// navigating away.
await rc1.executeScript((url) => {
// Sets activateAfter = 1m to indicate the request should NOT be sent out
// immediately.
fetchLater(url, {activateAfter: 60000});
// Adds a pageshow listener to stash the BFCache event.
window.addEventListener('pageshow', e => {
window.pageshowEvent = e;
});
}, [url]);
// Navigates away to trigger request sending.
const rc2 = await rc1.navigateToNew();
// Navigates back.
await rc2.historyBack();
// Verifies the page was BFCached.
assert_true(await rc1.executeScript(() => {
return window.pageshowEvent.persisted;
}));
// Theoretically, the request should still be pending thus 0 request received.
// However, 1 request is sent, as by default the WPT test runner, e.g.
// content_shell in Chromium, does not enable BackgroundSync permission,
// resulting in forcing request sending on every navigation, even if page is
// put into BFCache.
await expectBeacon(uuid, {count: 1});
}, `fetchLater() with activateAfter=1m sends on page entering BFCache if BackgroundSync is off.`);
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