<!DOCTYPE HTML>
<html>
    <head>
        <style>
            html {
                scroll-snap-type: y mandatory;
                margin-top: 50px;
                /* There's a different value for the bottom margin to ensure that
                   margins with different sizes are properly tested. */
                margin-bottom: 100px;
            }
            .verticalGallery {
                width: 100vw;
                height: 600vh;
                margin: 0;
                padding: 0;
            }
            .colorBox {
                height: 100vh;
                width: 100vw;
                float: left;
                scroll-snap-align: start;
            }
            #item0 { background-color: red; }
            #item1 { background-color: green; }
            #item2 { background-color: blue; }
            #item3 { background-color: aqua; }
            #item4 { background-color: yellow; }
            #item5 { background-color: fuchsia; }
        </style>
        <script src="../../../resources/js-test.js"></script>
        <script src="../../../resources/ui-helper.js"></script>
        <script src="resources/mainframe-scroll-snap-test.js"></script>
        <script>
        window.jsTestIsAsync = true;

        async function runTests()
        {
            try {
                await UIHelper.delayFor(0);
                await doScrollGlide(document.scrollingElement, VERTICAL);
                expectTrue(document.scrollingElement.scrollTop == window.innerHeight + 50, "div scrolled to next window.");

                await UIHelper.delayFor(0);
                await doScrollSnap(document.scrollingElement, VERTICAL);
                expectTrue(document.scrollingElement.scrollTop == window.innerHeight + 50, "div honored snap points.");
            } catch (e) {
                console.log(e);
            } finally {
                finishJSTest();
            }
        }

        function onLoad()
        {
            if (window.eventSender) {
                internals.setPlatformMomentumScrollingPredictionEnabled(false);
                runTests();
            } else {
                var messageLocation = document.getElementById('item0');
                var message = document.createElement('div');
                message.innerHTML = "<p>To run this test manually, scroll the page vertically. The page should "
                    + "snap between uniform colors which fill the view.<p>";
                messageLocation.appendChild(message);
            }
        }
        </script>
    </head>
    <body onload="onLoad();" class="verticalGallery">
        <div id="item0" class="colorBox"><div id="console"></div></div>
        <div id="item1" class="colorBox"></div>
        <div id="item2" class="colorBox"></div>
        <div id="item3" class="colorBox"></div>
        <div id="item4" class="colorBox"></div>
        <div id="item5" class="colorBox"></div>
    </body>
</html>