servo/tests/wpt/css-tests/cssom-view-1_dev/xhtml1/window-screen-width-immutable.xht

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<title>CSSOM View - 4.2 - screen.width immutability</title>
<link href="mailto:neils.christoffersen@gmail.com" rel="author" title="Neils Christoffersen" />
<link href="http://www.w3.org/TR/cssom-view/#the-screen-interface" rel="help" />
<meta content="dom" name="flags" />
<meta content="screen.width is immutable" name="assert" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<div id="myDiv"></div>
<div id="log"></div>
<script>
var originalVal = window.screen.width;
// try to set window.screen.width
window.screen.width = 0;
// verify window.screen.width didn't change
test(function() {
assert_equals(window.screen.width, originalVal, "window.screen.width should be immutable")
}, "immutability test");
</script>
</body></html>