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Test Info:

<!DOCTYPE HTML>
<html>
<!--
-->
<head>
<title>Test for Bug 437915</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<style type="text/css">
div.classvalue { text-decoration: underline; }
div[title~="titlevalue"] { visibility: hidden; }
</style>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=437915">Mozilla Bug 437915</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script class="testbody" type="text/javascript">
/** Test for Bug 437915 **/
var div = document.getElementById("content");
var cs = document.defaultView.getComputedStyle(div);
var chars = {
0x09: true, // tab
0x0a: true, // newline
0x0b: false, // vertical tab (MAY CHANGE IN FUTURE!)
0x0c: true, // form feed
0x0d: true, // carriage return
0x0e: false,
0x20: true, // space
0x2003: false,
0x200b: false,
0x2028: false,
0x2029: false,
0x3000: false
};
var wsmap = {
false: { str: " NOT", "text-decoration-line": "none", "visibility": "visible" },
true: { str: "", "text-decoration-line": "underline", "visibility": "hidden" }
};
for (var char in chars) {
var is_whitespace = chars[char];
var mapent = wsmap[is_whitespace];
div.setAttribute("class", "classvalue" + String.fromCharCode(char) + "b")
div.setAttribute("title", "a" + String.fromCharCode(char) + "titlevalue")
for (var prop of ["text-decoration-line", "visibility"]) {
is(cs.getPropertyValue(prop), mapent[prop],
"Character " + char + " should" + mapent.str +
" be treated as whitespace ("
+ prop + " should be " + mapent[prop] + ")");
}
}
</script>
</pre>
</body>
</html>