gecko/dom/tests/mochitest/webcomponents/test_style_fallback_content.html

29 lines
1.2 KiB
HTML

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=806506
-->
<head>
<title>Test for styling fallback content</title>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<div id="grabme"></div>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=806506">Bug 806506</a>
<script>
var host = document.getElementById("grabme");
var shadow = host.createShadowRoot();
shadow.innerHTML = '<style id="innerstyle"></style><span id="container"><content><span id="innerspan">Hello</span></content></span>';
var innerStyle = shadow.getElementById("innerstyle");
innerStyle.innerHTML = '#innerspan { margin-top: 10px; }';
var innerSpan = shadow.getElementById("innerspan");
is(getComputedStyle(innerSpan, null).getPropertyValue("margin-top"), "10px", "Default content should be style by id selector.");
innerStyle.innerHTML = '#container > content > #innerspan { margin-top: 30px; }';
is(getComputedStyle(innerSpan, null).getPropertyValue("margin-top"), "30px", "Default content should be style by child combinators.");
</script>
</body>
</html>