dispose-for-navigation-in-child.html

Enable keyboard shortcuts

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/per-entry-events/dispose-for-navigation-in-child.html - WPT Dashboard Interop Dashboard

<!doctype html>

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

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

<iframe id="iframe" 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(r => window.onload = () => t.step_timeout(r, 0));

  let start_length = navigation.entries().length;

  let start_index = navigation.currentEntry.index;

  await iframe.contentWindow.navigation.navigate("#a");

  await navigation.navigate("#1").finished;

  await navigation.navigate("#2").finished;

  await navigation.navigate("#3").finished;

  await iframe.contentWindow.navigation.back().finished;

  assert_equals(navigation.entries().length, start_length + 3);

  assert_equals(iframe.contentWindow.navigation.entries().length, 2);

  assert_equals(navigation.currentEntry.index, start_index);

  assert_equals(iframe.contentWindow.navigation.currentEntry.index, 0);

  let top_entry_0_before = navigation.entries()[start_index];

  let dispose_promises = [];

  for (let i = start_index + 1; i < navigation.entries().length; i++) {

    dispose_promises.push(new Promise(r => navigation.entries()[i].ondispose = r))

  // This push navigation should truncate in the top window.

  await iframe.contentWindow.navigation.navigate("#b").finished;

  // entries() should be updated in both frames, and all forward entries in the

  // top window should have dispose events, even though that wasn't the window

  // that navigated.

  await Promise.all(dispose_promises);

  assert_equals(navigation.entries().length, start_length);

  assert_equals(iframe.contentWindow.navigation.entries().length, 2);

  assert_equals(navigation.currentEntry.index, start_index);

  assert_equals(iframe.contentWindow.navigation.currentEntry.index, 1);

  assert_equals(navigation.entries()[start_index], top_entry_0_before);

}, "Dispose events should fire when entries are removed by a navigation in a different frame");

</script>