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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=468167
-->
<head>
<title>Test for Bug 468167</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/javascript" src="/tests/SimpleTest/EventUtils.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=468167">Mozilla Bug 468167</a>
<p id="display">
<textarea id="ta" rows="10" cols="80"></textarea>
</p>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 468167 **/
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(runTests);
function runTests()
{
var ta = document.getElementById("ta");
ta.focus();
is(ta.scrollTop, 0, "initially scrolled to top");
var s = "";
for (var i = 0; i < 40; ++i) {
// three characters per line
if (i < 10)
s += "0";
s += i + "\n";
}
ta.value = s;
is(ta.scrollTop, 0, "scrolled to top after adding content");
ta.scrollTop = 9999; // scroll down as far as we can
isnot(ta.scrollTop, 0, "scrolled down after scrolling down");
ta.setSelectionRange(0, 99); // 33 lines out of 40
// Send a backspace key event to delete the selection
synthesizeKey("VK_BACK_SPACE", { });
is(ta.scrollTop, 0, "scrolled to top after deleting selection");
SimpleTest.finish();
}
</script>
</pre>
</body>
</html>
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