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// 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 "internal-error".
// See `NotRestoredReasonToReportString()`.
await assertNotRestoredFromBFCache(rc1, ['internal-error']);
});
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