test_parseStyleSheet.html

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<!DOCTYPE HTML>

<html>

<!--

    https://bugzilla.mozilla.org/show_bug.cgi?id=1195978

-->

  <head>

    <title>Test for Bug 1195978</title>

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

    <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

    <style>

      body {

        color: red;

    </style>

  </head>

  <body>

    <script type="application/javascript">

const InspectorUtils = SpecialPowers.InspectorUtils;

var sheet = document.styleSheets[1];

is(InspectorUtils.getRelativeRuleLine(sheet.cssRules[0]), 2,

   "initial relative rule line");

is(InspectorUtils.getRuleLine(sheet.cssRules[0]), 11,

   "initial rule line");

InspectorUtils.parseStyleSheet(sheet, "\nbody {\n  color: blue;\n}\n");

is(InspectorUtils.getRelativeRuleLine(sheet.cssRules[0]), 2,

   "relative rule line after reparsing");

is(InspectorUtils.getRuleLine(sheet.cssRules[0]), 11,

   "relative rule line after reparsing");

    </script>

  </body>

</html>