Implements pageX and pageY attributes
diff --git a/css/cssom-view/mouseEvent.html b/css/cssom-view/mouseEvent.html
index 907a2b4..7e194b8 100644
--- a/css/cssom-view/mouseEvent.html
+++ b/css/cssom-view/mouseEvent.html
@@ -2,6 +2,9 @@
<meta charset=utf-8>
<head>
<title>CSSOM MouseEvent tests</title>
+<div style="background:lightblue; height:10000px">
+ Hello
+</div>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
@@ -13,5 +16,18 @@
assert_equals(mouseEvent.x, 30);
assert_equals(mouseEvent.y, 40);
}, 'MouseEvent\'s x and y must be equal to clientX and clientY.');
+
+test(function () {
+ var mouseEvent1 = new MouseEvent('mousedown', {clientX: 10, clientY: 20});
+ assert_equals(mouseEvent1.pageX, 10);
+ assert_equals(mouseEvent1.pageY, 20);
+ scrollBy(0, 5000);
+ assert_equals(mouseEvent1.pageX, 10);
+ assert_equals(mouseEvent1.pageY, 5020);
+
+ var mouseEvent2 = new MouseEvent('mousedown', {clientX: 10, clientY: 20});
+ assert_equals(mouseEvent2.pageX, 10);
+ assert_equals(mouseEvent2.pageY, 5020);
+}, 'MouseEvent\'s pageX and pageY attributes should be the sum of the scroll offset and clientX/clientY');
</script>
</head>
