navigate-navigation-back-same-document-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/navigate-event/navigate-navigation-back-same-document-in-iframe.html - WPT Dashboard Interop Dashboard

<!doctype html>

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

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

<iframe id="i" src="/common/blank.html"></iframe>

<script>

promise_test(async t => {

  // Wait for after the load event so that the navigation doesn't get converted

  // into a replace navigation.

  await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0));

  let target_key = i.contentWindow.navigation.currentEntry.key;

  let target_id = i.contentWindow.navigation.currentEntry.id;

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

  assert_true(i.contentWindow.navigation.canGoBack);

  i.contentWindow.navigation.onnavigate = e => {

    assert_equals(e.navigationType, "traverse");

    assert_false(e.cancelable, "traversals in iframes should never be cancelable");

    assert_true(e.canIntercept);

    assert_false(e.userInitiated);

    assert_true(e.hashChange);

    assert_equals(e.downloadRequest, null);

    assert_equals(new URL(e.destination.url).hash, "");

    assert_true(e.destination.sameDocument);

    assert_equals(e.destination.key, target_key);

    assert_equals(e.destination.id, target_id);

    assert_equals(e.destination.index, 0);

    assert_equals(e.formData, null);

    assert_equals(e.info, "hi");

    // NavigateEvent sourceElement is still in development, so test whether it is available.

    if ("sourceElement" in e) assert_equals(e.sourceElement, null);

  await i.contentWindow.navigation.back({ info: "hi" }).finished;

}, "navigate event for navigation.back() - same-document in an iframe");

</script>