<!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] -->
<html>
<head>
    <style>
        .outer-abs-scroller {
            position: absolute;
            top: 20px;
            left: 20px;
            width: 600px;
            height: 500px;
            overflow-y: auto;
            border: 2px solid gray;
        }
        
        .relative {
            position: relative;
        }

        .horizontal-scroller {
            overflow: auto;
            border: 2px solid blue;
        }
        
        .wide-content {
            width: 200%;
            height: 200px;
            background-image: repeating-linear-gradient(to right, silver, white 200px);
        }

        .filler {
            height: 200px;
            width: 50px;
            background-color: rgba(0, 0, 0, 0.2);
        }
        
        #console {
            margin-top: 400px;
        }
    </style>
    <script src="../../../resources/js-test-pre.js"></script>
    <script src="../../../resources/ui-helper.js"></script>
    <script>
        var jsTestIsAsync = true;

        var horizontalScroller;
        var verticalScroller;
        var horizontalOverflowScrollEventCount = 0;
        var verticalOverflowScrollEventCount = 0;
        var windowScrollEventCount = 0;

        async function testScrollOverContent()
        {
            await UIHelper.mouseWheelScrollAt(200, 300); // Over horizontal scroller.

            shouldBe('horizontalOverflowScrollEventCount', '0');
            shouldBeTrue('verticalOverflowScrollEventCount > 0', 'true');
            shouldBe('windowScrollEventCount', '0');
            
            finishJSTest();
        }

        async function scrollTest()
        {
            await testScrollOverContent();

            finishJSTest();
        }

        window.addEventListener('load', () => {
            description('here');
            horizontalScroller = document.querySelector('.horizontal-scroller');
            verticalScroller = document.querySelector('.outer-abs-scroller');

            horizontalScroller.addEventListener('scroll', () => {
                ++horizontalOverflowScrollEventCount;
            }, false);

            verticalScroller.addEventListener('scroll', () => {
                ++verticalOverflowScrollEventCount;
            }, false);

            window.addEventListener('scroll', () => {
                ++windowScrollEventCount;
            }, false);

            setTimeout(scrollTest, 0);
        }, false);
    </script>
</head>
<body>
    <div class="outer-abs-scroller">
        <div class="relative">
            <div class="filler"></div>
            <div class="horizontal-scroller">
                <div class="wide-content">Horizontal scrolling content</div>
            </div>
            <div class="filler"></div>
            <div class="filler"></div>
        </div>
    </div>
    <div id="console"></div>
<script src="../../../resources/js-test-post.js"></script>
</body>
</html>