| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| body { |
| height: 2000px; |
| } |
| #scroller { |
| width: 300px; |
| height: 300px; |
| overflow-x: hidden; |
| overflow-y: auto; |
| margin: 20px; |
| scroll-snap-type: y mandatory; |
| } |
| #scroller > div { |
| height: 100%; |
| width: 100%; |
| scroll-snap-align: start; |
| } |
| </style> |
| <script src="../../../resources/js-test.js"></script> |
| <script> |
| jsTestIsAsync = true; |
| |
| var targetScroller; |
| |
| function checkEndState() |
| { |
| shouldBe('targetScroller.scrollTop', 'targetScroller.clientHeight'); |
| shouldBe('document.scrollingElement.scrollTop', '0'); |
| finishJSTest(); |
| } |
| |
| function scrollTest() |
| { |
| targetScroller = document.getElementById('scroller'); |
| |
| var targetRect = targetScroller.getBoundingClientRect(); |
| |
| var dx = 0; |
| var dy = -1; |
| var startPosX = targetRect.left + 50; |
| var startPosY = targetRect.top + 50; |
| eventSender.monitorWheelEvents(); |
| eventSender.mouseMoveTo(startPosX, startPosY); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'began', 'none'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'ended', 'none'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'begin'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'continue'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'none', 'end'); |
| eventSender.callAfterScrollingCompletes(checkEndState); |
| } |
| |
| function startTest() |
| { |
| description('Tests that latching is not recomputed between the scroll and momentum phases, which triggers a document scroll.'); |
| if (window.eventSender) { |
| internals.setPlatformMomentumScrollingPredictionEnabled(false); |
| setTimeout(scrollTest, 0); |
| return; |
| } |
| |
| debug('This test requires eventSender'); |
| finishJSTest(); |
| } |
| |
| window.addEventListener('load', startTest, false); |
| </script> |
| </head> |
| <body> |
| <div id="scroller"> |
| <div style="background-color: orange"></div> |
| <div style="background-color: green"></div> |
| <div style="background-color: blue"></div> |
| <div style="background-color: aqua"></div> |
| <div style="background-color: yellow"></div> |
| <div style="background-color: fuchsia"></div> |
| </div> |
| <div id="console"></div> |
| </body> |
| </html> |
