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Test Info:

<!DOCTYPE HTML>
<html>
<!--
-->
<head>
<title>Test for Bug 319381</title>
<script 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=319381">Mozilla Bug 319381</a>
<p id="display"></p>
<div id="content" style="display: none">
<div id="t"></div>
</div>
<pre id="test">
<script class="testbody" type="text/javascript">
/** Test for Bug 319381 **/
function c() {
return document.defaultView.getComputedStyle($('t')).
getPropertyValue("overflow");
}
var vals = ["visible", "hidden", "auto", "scroll"];
var mozVals = ["-moz-scrollbars-vertical", "-moz-scrollbars-horizontal"];
var i, j;
for (i = 0; i < vals.length; ++i) {
$('t').style.overflow = vals[i];
is($('t').style.overflow, vals[i], "Roundtrip");
is(c(), vals[i], "Simple property set");
}
for (i = 0; i < vals.length; ++i) {
for (j = 0; j < vals.length; ++j) {
$('t').setAttribute("style",
"overflow-x: " + vals[i] + "; overflow-y: " + vals[j]);
is($('t').style.getPropertyValue("overflow-x"), vals[i], "Roundtrip");
is($('t').style.getPropertyValue("overflow-y"), vals[j], "Roundtrip");
if (i == j) {
is($('t').style.overflow, vals[i], "Shorthand serialization");
} else {
is($('t').style.overflow, vals[i] + " " + vals[j], "Shorthand serialization");
}
// "visible" overflow-x and overflow-y become "auto" in computed style if
// the other direction is not also "visible".
if (i == j || (vals[i] == "visible" && vals[j] == "auto")) {
is(c(), vals[j], "Shorthand computation");
} else if (vals[j] == "visible" && vals[i] == "auto") {
is(c(), vals[i], "Shorthand computation");
} else {
let x = vals[i] == "visible" ? "auto" : vals[i];
let y = vals[j] == "visible" ? "auto" : vals[j];
is(c(), x + " " + y, "Shorthand computation");
}
}
}
</script>
</pre>
</body>
</html>