same-document-nav-same-document-traversal.html

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This WPT test may be referenced by the following Test IDs:
- /html/browsers/browsing-the-web/overlapping-navigations-and-traversals/same-document-nav-same-document-traversal.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>Same-document traversal after a same-document navigations</title>

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

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

<!--

  These tests are kind of silly since it's hard to imagine any other result:

  same-document navigations are always synchronous so of course back() won't

  cancel them.

  Nevertheless they're nice as a basis from which to write corresponding app

  history tests, where the consequences aren't as obvious.

-->

<body>

<script type="module">

import { createIframe, delay } from "./resources/helpers.mjs";

promise_test(async t => {

  const iframe = await createIframe(t);

  // Setup

  iframe.contentWindow.location.hash = "#1";

  await delay(t, 0);

  iframe.contentWindow.location.hash = "#2";

  await delay(t, 0);

  iframe.contentWindow.location.hash = "#3";

  iframe.contentWindow.history.back();

  assert_equals(iframe.contentWindow.location.hash, "#3", "must not go back synchronously");

  // Does go back eventually, and only one step

  await t.step_wait(() => iframe.contentWindow.location.hash === "#2");

}, "fragment navigation then back()");

promise_test(async t => {

  const iframe = await createIframe(t);

  // Setup

  iframe.contentWindow.history.pushState(null, "", "?1");

  await delay(t, 0);

  iframe.contentWindow.history.pushState(null, "", "?2");

  await delay(t, 0);

  iframe.contentWindow.history.pushState(null, "", "?3");

  iframe.contentWindow.history.back();

  assert_equals(iframe.contentWindow.location.search, "?3", "must not go back synchronously");

  // Does go back eventually, and only one step

  await t.step_wait(() => iframe.contentWindow.location.search === "?2");

}, "pushState then back()");

</script>