<head>
<script>
function test()
{
if (window.testRunner)
testRunner.dumpAsText();
var testString = "";
for (var i = 0; i < 32; ++i) // >
if (i != 9 && i != 10 && i != 13) // ;
testString += String.fromCharCode(i);
testString += String.fromCharCode(0x200B);
testString += String.fromCharCode(0x200C);
testString += String.fromCharCode(0x200D);
testString += String.fromCharCode(0x200E);
testString += String.fromCharCode(0x200F);
testString += String.fromCharCode(0xFEFF);
testString += String.fromCharCode(0xFFFC);
var span = document.getElementById("characters");
var abWidth = span.offsetWidth;
span.firstChild.data = "a";
var aWidth = span.offsetWidth;
span.firstChild.data = "a" + testString + "b";
var abWithCharactersWidth = span.offsetWidth;
var testArea = document.getElementById("testArea");
testArea.parentNode.removeChild(testArea);
if (abWithCharactersWidth > abWidth)
result = "FAIL: One or more of the characters had a non-zero width.";
else if (abWidth > aWidth)
result = "PASS: All the characters had zero width.";
else
result = "FAIL: Width measurement seems to have failed.";
document.getElementById("result").firstChild.data = result;
}
</script>
</head>
<body onload="test()">
<p>This test checks various characters that should always be zero width to ensure that they are.
The WebKit text system ensures this in a way that's independent of the fonts installed on the system.</p>
<p id="result">FAIL: Script did not run to completion.</p>
<p id="testArea"><span id="characters">ab</span></p>
</body>