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Diffstat (limited to 'layout/generic/test/test_overflow_event.html')
| -rw-r--r-- | layout/generic/test/test_overflow_event.html | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/layout/generic/test/test_overflow_event.html b/layout/generic/test/test_overflow_event.html new file mode 100644 index 0000000000..152b625f30 --- /dev/null +++ b/layout/generic/test/test_overflow_event.html @@ -0,0 +1,50 @@ +<!DOCTYPE HTML> +<html> +<head> + <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"> + + SimpleTest.waitForExplicitFinish(); + + window.addEventListener("load", function(event) { + if (event.target == document) { + test_bug981637(); + } + }); + + /** 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); + innerDiv.style.transform = "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"); + SimpleTest.finish(); + } + + </script> +</head> +<body> +<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=981637">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"> +</pre> +</body> +</html> |