<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=563416 --> <head> <title>Test for Bug 563416</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=563416">Mozilla Bug 563416</a> <p id="display"><iframe id="test" src='data:text/html,<textarea style="box-sizing:content-box; -moz-appearance:none; height: 0px; padding: 0px;" cols="20" rows="10">hsldkjvmshlkkajskdlfksdjflskdjflskdjflskdjflskdjfddddddddd</textarea>'></iframe></p> <div id="content" style="display: none"> </div> <pre id="test"> <script type="application/javascript"> /** Test for Bug 563416 **/ var result = -1; var expected = -2; var i = 0; function runTest() { i = 0; var frame = document.getElementById('test'); frame.onload = function() { var t = frame.contentDocument.documentElement.getElementsByTagName("textarea")[0]; expected = t.clientWidth + 10; t.style.width = expected + 'px'; result = t.clientWidth; if (i == 0) { i++; setTimeout(function(){frame.contentWindow.location.reload();},0); } else { is(result, expected, "setting style.width changes clientWidth"); SimpleTest.finish(); } } frame.contentWindow.location.reload(); } SimpleTest.waitForExplicitFinish(); addLoadEvent(runTest); </script> </pre> </body> </html>