entries-after-bfcache-in-iframe.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-in-iframe.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() in an iframe is properly updated

// when a page is restored from bfcache.

// First, create an iframe and do a fragment navigation in it, so that its

// navigation.entries().length == 2. Then go back, so that entries()[0] is

// current. Finally, navigate the main window (which should clobber the

// the iframe's entries()[1]), and come back via bfcache. If the iframe's

// entries() were updated, then its entries().length should have been reduced

// to 1.

runBfcacheTest({

  targetOrigin: originSameOrigin,

  funcBeforeNavigation: async () => {

    window.events = [];

    let i = document.createElement("iframe");

    i.src = "/common/blank.html";

    document.body.appendChild(i);

    await new Promise(resolve => i.onload = () => setTimeout(resolve, 0));

    await i.contentWindow.navigation.navigate("#foo");

    await i.contentWindow.navigation.back();

    window.frames[0].navigation.entries()[1].ondispose = () => events.push("dispose");

    window.frames[0].onpageshow = () => events.push("pageshow");

},

  async funcAfterAssertion(pageA, pageB) {

    assert_equals(await pageA.execute_script(() => window.frames[0].navigation.entries().length), 1);

    assert_array_equals(await pageA.execute_script(() => window.events), ["pageshow", "dispose"]);

}, "entries() in an iframe must be updated after navigating back to a bfcached page");

</script>