navigation-api/ordering-and-transition/back-same-document.html

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<meta name="variant" content="?no-currententrychange">
<meta name="variant" content="?currententrychange">

<script type="module">
import { Recorder, hasVariant } from "./resources/helpers.mjs";

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

  const recorder = new Recorder({
    skipCurrentChange: !hasVariant("currententrychange"),
    finalExpectedEvent: "finished fulfilled"
  });

  recorder.setUpNavigationAPIListeners();

  const result = navigation.back();
  recorder.setUpResultListeners(result);

  Promise.resolve().then(() => recorder.record("promise microtask"));

  await recorder.readyToAssert;

  recorder.assert([
    /* event name, location.hash value, navigation.transition properties */
    ["promise microtask", "#1", null],
    ["navigate", "#1", null],
    ["currententrychange", "", null],
    ["committed fulfilled", "", null],
    ["navigatesuccess", "", null],
    ["finished fulfilled", "", null],
  ]);
}, "event and promise ordering for same-document navigation.back()");
</script>