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Test Info: Warnings

  • This test gets skipped with pattern: toolkit == 'android'
<meta charset="utf-8">
<title>Test for overflow events</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="application/javascript">
window.addEventListener("load", function(event) {
if ( == document) {
/** Test for Bug 981637: correct overflow event firing in updateOverflow **/
var overflow_fired = false;
function overflow_listener(event) {
overflow_fired = true;
function test_bug981637() {
var outerDiv = document.getElementById("bug981637");
var innerDiv = outerDiv.firstChild;
innerDiv.offsetWidth; // flush layout
is(overflow_fired, false, "correct setup");
outerDiv.addEventListener("overflow", overflow_listener); = "scale(1.2)";
innerDiv.offsetWidth; // flush layout
// run finish step after the overflow event fires (off the event loop)
setTimeout(test_bug981637_step2, 0);
function test_bug981637_step2() {
is(overflow_fired, true, "overflow event should have fired after updating transform");
<a target="_blank" href="">Mozilla Bug 981637</a>
<div id="bug981637" style="overflow: hidden; width: 100px; height: 100px;"><div style="transform: scale(0.8); width: 100px; height: 100px"></div></div>
<pre id="test">