back-forward-cache-open-connection.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:
- /IndexedDB/back-forward-cache-open-connection.window.html - WPT Dashboard Interop Dashboard

// META: title=Testing BFCache support for page with open IndexedDB connection, and eviction behavior when receiving versionchange event.

// META: script=/common/dispatcher/dispatcher.js

// META: script=/common/utils.js

// META: script=resources/support.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: timeout=long

'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 createIndexedDBForTesting(rc1, 'test_idb', 1);

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

  // The page is ensured to be eligible for BFCache even with open connection,

  // otherwise the previous assertion will fail with PRECONDITION_FAILED.

  // Now we can test if the versionchange event will evict the BFCache.

  await createIndexedDBForTesting(rc1, 'test_idb_2', 1);

  const rc2 = await rc1.navigateToNew();

  // Create an IndexedDB database with higher version.

  await createIndexedDBForTesting(rc2, 'test_idb_2', 2);

  await rc2.historyBack();

  // The previous page receiving versionchange event should be evicted with the

  // correct reason.

  // `kIgnoreEventAndEvict` will be reported as "masked".

  // See `NotRestoredReasonToReportString()`.

  await assertNotRestoredFromBFCache(rc1, ['masked']);

});