back-forward-cache-with-open-websocket-connection-and-close-it-in-pagehide.window.js

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /websockets/back-forward-cache-with-open-websocket-connection-and-close-it-in-pagehide.window.html - WPT Dashboard Interop Dashboard

// META: title=Testing BFCache support for a page with an open WebSocket connection, but close it in pagehide.

// META: script=/common/dispatcher/dispatcher.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=/websockets/constants.sub.js

// META: script=resources/websockets-test-helpers.sub.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(

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

  await openWebSocketAndCloseItInPageHide(rc1);

  // The page should be eligible for BFCache because the WebSocket connection will be closed in `pagehide`.

  // `pagehide` is dispatched before BFCache

  await assertBFCacheEligibility(rc1, /*shouldRestoreFromBFCache=*/ true);

  // Read WebSocket event flags

  const { wsError, wsClose } = await readWebSocketCloseAndErrorFlags(rc1);

  assert_false(wsError, 'WebSocket should not have error');

  assert_true(wsClose, 'WebSocket should have been closed via pagehide');

});