entries-after-bfcache.html

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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:
- /navigation-api/navigation-history-entry/entries-after-bfcache.html - WPT Dashboard Interop Dashboard

<!doctype html>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/common/utils.js"></script>

<script src="/common/dispatcher/dispatcher.js"></script>

<script src="/html/browsers/browsing-the-web/back-forward-cache/resources/helper.sub.js"></script>

<script src="resources/is_uuid.js"></script>

<script>

// This test ensures that navigation.entries() is properly updated when a page

// is restored from bfcache. Before navigating away and back, entries() contains

// a single entry representing this document. When restored from bfcache,

// entries() should now have two entries: [0] should still be this document, but

// [1] should represent the document that we navigated to and back from

// (assuming that document is same-origin to this one).

runBfcacheTest({

  targetOrigin: originSameOrigin,

  funcBeforeNavigation: () => {

    window.originalEntry0 = navigation.entries()[0];

},

  async funcAfterAssertion(pageA, pageB) {

    const entryData = await pageA.execute_script(() => {

      return navigation.entries().map(e => ({

        url: e.url,

        key: e.key,

        id: e.id,

        index: e.index,

        sameDocument: e.sameDocument

      }));

});

    assert_equals(entryData.length, 2);

    // Ensure that [1] has the proper url, and otherwise is initialized as

    // a cross-document NavigationHistoryEntry ought to be.

    assert_equals(entryData[0].url, pageA.url);

    assert_equals(entryData[1].url, pageB.url);

    assert_true(isUUID(entryData[0].key));

    assert_true(isUUID(entryData[1].key));

    assert_not_equals(entryData[0].key, entryData[1].key);

    assert_true(isUUID(entryData[0].id));

    assert_true(isUUID(entryData[1].id));

    assert_not_equals(entryData[0].id, entryData[1].id);

    assert_equals(entryData[0].index, 0);

    assert_equals(entryData[1].index, 1);

    assert_true(entryData[0].sameDocument);

    assert_false(entryData[1].sameDocument);

    const currentIsZero = await pageA.execute_script(() => navigation.currentEntry === navigation.entries()[0]);

    assert_true(currentIsZero);

    const zeroIsSameAsOriginal = await pageA.execute_script(() => navigation.currentEntry === window.originalEntry0);

    assert_true(zeroIsSameAsOriginal);

}, "entries() must contain the forward-history page after navigating back to a bfcached page");

</script>