<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../navigation-methods/return-value/resources/helpers.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script>
promise_test(async t => {
  // Open a cross-origin window.
  let w = window.open(get_host_info().HTTP_REMOTE_ORIGIN + "/navigation-api/navigate-event/resources/opener-postMessage-onload.html");
  await new Promise(resolve => window.onmessage = resolve);

  // Navigate the opened window to this origin.
  w.location = get_host_info().ORIGIN + "/navigation-api/navigate-event/resources/opener-postMessage-onload.html";
  await new Promise(resolve => window.onmessage = resolve);
  assert_equals(w.navigation.entries().length, 1);
  assert_equals(w.navigation.currentEntry.index, 0);

  // Go back. This should not fire a navigate event, because the traversal is
  // cross-origin. Note that history.back() must be used instead of
  // navigation.back() because navigation.back() can never go cross-origin.
  w.navigation.onnavigate = t.unreached_func("navigate should not fire");
  w.history.back();
  await new Promise(resolve => window.onmessage = resolve);
}, "A cross-origin traversal does not fire the navigate event");
</script>
