test_style_sheet.html

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<!DOCTYPE html>

<title>Test for Bug 1239128</title>

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

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

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1239128">Mozilla Bug 1239128</a>

<p id="display"</p>

<svg>

  <style>svg { fill: blue; }</style>

</svg>

<pre id="test">

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

var style = document.querySelector("style");

var exceptionThrown = false;

try {

  is(style.sheet.cssRules[0].cssText, "svg { fill: blue; }",

     "Should get the fill: blue rule back");

} catch (e) {

  exceptionThrown = true;

ok(!exceptionThrown, "Should be able to access data: <style> stylesheet");

</script>

</pre>