<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<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;

  location.hash = "#1";
  location.hash = "#2";
  location.hash = "#3