test_overscroll_behavior_pref.html

Enable keyboard shortcuts

<!doctype html>

<html>

  <head>

    <meta http-equiv="content-type" content="text/html; charset=utf-8">

    <title>Test pref for overscroll-behavior property</title>

    <script src="/tests/SimpleTest/SimpleTest.js"></script>

  </head>

<script class="testbody" type="text/javascript">

function runTest() {

  let css = "div { overscroll-behavior: auto; }";

  let style = document.createElement('style');

  style.appendChild(document.createTextNode(css));

  document.head.appendChild(style);

  is(document.styleSheets[0].cssRules[0].style.length,

0,

     "overscroll-behavior shouldn't be parsed if the pref is off");

  SimpleTest.finish();

SpecialPowers.pushPrefEnv({ set: [["layout.css.overscroll-behavior.enabled", false]] },

                          runTest);

SimpleTest.waitForExplicitFinish();

</script>

</html>