dispose-cross-document.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/per-entry-events/dispose-cross-document.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));

  iframe.contentWindow.location.search = "?1";

  await new Promise(r => iframe.onload = () => t.step_timeout(r, 0));

  const keyFor1 = iframe.contentWindow.navigation.currentEntry.key;

  iframe.contentWindow.location.search = "?2";

  await new Promise(r => iframe.onload = () => t.step_timeout(r, 0));

  iframe.contentWindow.location.search = "?3";

  await new Promise(r => iframe.onload = () => t.step_timeout(r, 0));

  iframe.contentWindow.navigation.traverseTo(keyFor1);

  await new Promise(r => iframe.onload = () => t.step_timeout(r, 0));

  assert_equals((new URL(iframe.contentWindow.location.href)).search, "?1");

  assert_equals(iframe.contentWindow.navigation.entries().length, 4);

  const [, entry2, entry3] = iframe.contentWindow.navigation.entries();

  entry2.ondispose = t.unreached_func("entry2 dispose must not fire");

  entry2.addEventListener("dispose", t.unreached_func("entry3 dispose must not fire"));

  iframe.contentWindow.navigation.navigate("/common/blank.html?fork");

  await new Promise(r => iframe.onload = r);

  // Test passes if we reached this point with no dispose events firing.

}, "No dispose events are fired due to cross-document forward pruning");

</script>