replacement-enabled.html

Enable keyboard shortcuts

This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/browsers/browsing-the-web/scroll-to-fragid/replacement-enabled.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>Navigating to a fragment should not clear forward history</title>

<link rel="help" href="https://html.spec.whatwg.org/multipage/#scroll-to-fragid">

<link rel="help" href="https://github.com/whatwg/html/issues/2796">

<link rel="help" href="https://github.com/whatwg/html/pull/2869">

<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">

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

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

<script src="navigate-helpers.js"></script>

<body>

<script>

"use strict";

let resolve, iframe;

promise_test(() => {

  iframe = document.createElement("iframe");

  iframe.src = "/common/blank.html";

  iframe.addEventListener("load", runTest);

  document.body.appendChild(iframe);

  return new Promise(r => resolve = r);

});

function runTest() {

  iframe.removeEventListener("load", runTest);

  const frameWindow = iframe.contentWindow;

  resolve((async () => {

    await navigateAndWaitForChange(frameWindow, w => w.location.href = "/common/blank.html#apple");

    await navigateAndWaitForChange(frameWindow, w => w.location.href = "/common/blank.html#banana");

    await navigateAndWaitForChange(frameWindow, w => w.location.href = "/common/blank.html#cat");

    assert_equals(frameWindow.location.hash, "#cat");

    // Might not be 4 (= 3 for iframe + 1 initial) due to cross-browser differences or if people are

    // running this test in a window that has previously been places. The important thing for this

    // test is the delta from this value.

    const afterThreeNavigations = frameWindow.history.length;

    await navigateAndWaitForChange(frameWindow, w => w.history.back());

    assert_equals(frameWindow.location.hash, "#banana");

    assert_equals(frameWindow.history.length, afterThreeNavigations,

      "back() must not change the history length");

    await navigateAndWaitForChange(frameWindow,

      w => w.location.replace("/common/blank.html#zebra"));

    assert_equals(frameWindow.location.hash, "#zebra");

    assert_equals(frameWindow.history.length, afterThreeNavigations,

      "replace() must not change the history length");

    // As of the time of this writing (2017-08-14), Firefox is not firing hashchange on forward, so

    // we automatically assume navigation succeeded after 100 ms. A sibling test will test this

    // particular Firefox bug.

    await navigateAndWaitForChange(frameWindow, w => w.history.forward(),

      { assumeSuccessAfter: 500 });

    assert_equals(frameWindow.location.hash, "#cat");

    assert_equals(frameWindow.history.length, afterThreeNavigations,

      "forward() must not change the history length");

  })());

</script>