1 files changed, 39 insertions, 0 deletions
diff --git a/dom/events/test/test_wheel_default_action.html b/dom/events/test/test_wheel_default_action.html
new file mode 100644
index 000000000..5ead8be63
--- /dev/null
+++ b/dom/events/test/test_wheel_default_action.html
@@ -0,0 +1,39 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for default action of WheelEvent</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>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.requestFlakyTimeout("untriaged");
+SpecialPowers.pushPrefEnv({"set": [
+    ["mousewheel.system_scroll_override_on_root_content.enabled", false]
+]}, runTest);
+
+var subWin = null;
+
+function runTest() {
+  subWin = window.open("window_wheel_default_action.html", "_blank",
+                       "width=500,height=500,scrollbars=yes");
+}
+
+function finish()
+{
+  subWin.close();
+  SimpleTest.finish();
+}
+
+</script>
+</pre>
+</body>
+</html>