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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=633762
-->
<head>
<title>Test for Bug 633762</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<script type="text/javascript" src="/tests/gfx/layers/apz/test/mochitest/apz_test_utils.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<p><a target="_blank" href="https://bugzilla.mozilla.org/show_bug?id=633762">Mozilla Bug 633762</a>
<iframe id="i" src="bug633762_iframe.html#a"></iframe>
<pre id="test">
<script>
var doc;
async function runTests() {
var i = document.getElementById("i");
doc = i.contentDocument;
var win = i.contentWindow;
// set display none on b
doc.getElementById("b").style.display = "none";
// flush layout
doc.documentElement.offsetLeft;
// focus on the iframe
win.focus();
// clear out any potential scroll events so we can listen for the one we want without false positives
await waitToClearOutAnyPotentialScrolls(window);
step2();
}
function step2() {
var i = document.getElementById("i");
doc = i.contentDocument;
var win = i.contentWindow;
// record scrolltop
scrollTopBefore = doc.body.scrollTop;
// send up arrow key event
sendKey("UP");
win.addEventListener("scroll", finish, {once: true, capture: true});
}
function finish() {
// assert that scroll top is now less than before
ok(scrollTopBefore > doc.body.scrollTop, "pressing up arrow should scroll up");
SimpleTest.finish();
}
var smoothScrollPref = "general.smoothScroll";
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(function() {
SpecialPowers.pushPrefEnv({"set":[[smoothScrollPref, false]]}, runTests);
});
</script>
</pre>
</body>
</html>
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