evict-on-message.tentative.window.js

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /html/browsers/browsing-the-web/back-forward-cache/broadcastchannel/evict-on-message.tentative.window.html - WPT Dashboard Interop Dashboard

// META: title=BroadcastChannel message while in bfcache should evict the entry.

// 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/back-forward-cache/resources/rc-helper.js

// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js

// META: script=/html/browsers/browsing-the-web/remote-context-helper-tests/resources/test-helper.js

'use strict';

promise_test(async t => {

  const rcHelper = new RemoteContextHelper();

  // Open a window with noopener so that BFCache will work.

  const rc1 = await rcHelper.addWindow(

      /*extraConfig=*/ {}, /*options=*/ {features: 'noopener'});

  await rc1.executeScript(() => {

    const channel = new BroadcastChannel('foo');

    channel.addEventListener('message', event => {

      channel.postMessage('Message received: ' + event.data);

});

});

  await prepareForBFCache(rc1);

  const newRemoteContextHelper = await rc1.navigateToNew();

  await assertSimplestScriptRuns(newRemoteContextHelper);

  // Post a message to a channel in bfcache. This should trigger eviction.

  const channel = new BroadcastChannel('foo');  // Access shared channel

  channel.postMessage('Sending a message should evict a bfcache entry.');

  await newRemoteContextHelper.historyBack();

  // It's possible that the pages with open broadcastchannel are not allowed

  // into bfcache. Set preconditionFailReasons to catch that case. Otherwise

  // expect the eviction reason.

  await assertNotRestoredFromBFCache(

      rc1, ['broadcastchannel-message'],

      /*preconditonFailReasons=*/['broadcastchannel']);

});