layout/inspector/tests/test_get_all_style_sheets.html

   1 <!DOCTYPE HTML>
   2 <!--
   3 https://bugzilla.mozilla.org/show_bug.cgi?id=734861
   4 -->
   5 <meta charset="utf-8">
   6 <title>Test for Bug 734861</title>
   7 <script src="/tests/SimpleTest/SimpleTest.js"></script>
   8 <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
   9 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=734861">Mozilla Bug 734861</a>
  10 <div id="host"></div>
  11 <script>
  12 /** Test for Bug 734861 **/
  13 const InspectorUtils = SpecialPowers.InspectorUtils;
  14
  15 add_task(async function() {
  16   let sheet = new CSSStyleSheet();
  17   await sheet.replace(`* { color: blue }`);
  18
  19   let host = document.querySelector("#host");
  20   host.adoptedStyleSheets = [sheet, sheet];
  21   document.adoptedStyleSheets.push(sheet);
  22
  23   let res = InspectorUtils.getAllStyleSheets(document);
  24
  25   let foundUA = false;
  26   let adoptedCount = 0;
  27   for (let s of InspectorUtils.getAllStyleSheets(document)) {
  28     if (SpecialPowers.unwrap(s) == sheet) {
  29       adoptedCount++;
  30     }
  31     if (s.href === "resource://gre-resources/ua.css") {
  32       foundUA = true;
  33     }
  34   }
  35
  36   ok(foundUA, "UA sheet should be returned with all the other sheets.");
  37   is(adoptedCount, 1, "Adopted stylesheet should show up once");
  38 });
  39 </script>