| <!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] --> |
| <html> |
| <head> |
| <style> |
| body { |
| height: 3000px; |
| background-image: repeating-linear-gradient(white, silver 200px); |
| } |
| </style> |
| <script src="../../../resources/js-test-pre.js"></script> |
| <script src="../../../resources/ui-helper.js"></script> |
| <script> |
| var jsTestIsAsync = true; |
| |
| var windowScrollEventCount = 0; |
| |
| async function resetScrollPositions() |
| { |
| windowScrollEventCount = 0; |
| } |
| |
| async function doMouseWheelScroll() |
| { |
| const events = [ |
| { |
| type : "wheel", |
| viewX : 100, |
| viewY : 100, |
| deltaY : -10, |
| phase : "began" |
| }, |
| { |
| type : "wheel", |
| deltaY : -100, |
| phase : "changed" |
| }, |
| { |
| type : "wheel", |
| deltaY : -50, |
| phase : "changed" |
| }, |
| { |
| type : "wheel", |
| deltaY : 50, |
| phase : "changed" |
| }, |
| { |
| type : "wheel", |
| deltaY : 100, |
| phase : "changed" |
| }, |
| { |
| type : "wheel", |
| deltaY : 100, |
| phase : "changed" |
| }, |
| { |
| type : "wheel", |
| phase : "ended" |
| }, |
| { |
| type : "wheel", |
| deltaY : 100, |
| momentumPhase : "began" |
| }, |
| { |
| type : "wheel", |
| deltaY : 100, |
| momentumPhase : "changed" |
| }, |
| { |
| type : "wheel", |
| momentumPhase : "ended" |
| } |
| ]; |
| |
| await UIHelper.mouseWheelSequence({ events }, { waitForCompletion: false }); |
| } |
| |
| async function scrollTest() |
| { |
| debug(''); |
| debug('Test that rubberbanding is canceled when the page does a programmatic scroll'); |
| await resetScrollPositions(); |
| await doMouseWheelScroll(); |
| |
| debug('Waiting for rubberband...'); |
| await UIHelper.waitForCondition(() => { |
| if (window.scrollY != 0) { |
| window.scrollTo(0, 1000); |
| return true; |
| } |
| return false; |
| }); |
| |
| // Wait for a rendering update with no scroll events firing to detect stabilization. |
| while (true) { |
| let currentScrollEventCount = windowScrollEventCount; |
| await UIHelper.renderingUpdate(); |
| if (windowScrollEventCount == currentScrollEventCount) |
| break; |
| } |
| |
| shouldBe('window.scrollY', '1000'); |
| finishJSTest(); |
| } |
| |
| window.addEventListener('load', () => { |
| window.addEventListener('scroll', () => { |
| ++windowScrollEventCount; |
| }, false); |
| |
| setTimeout(scrollTest, 0); |
| }, false); |
| </script> |
| </head> |
| <body> |
| <div id="console"></div> |
| <script src="../../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
