| <!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] --> |
| <html> |
| <head> |
| <style> |
| .scroll-container { |
| height: 250px; |
| width: 300px; |
| border: 1px solid black; |
| overflow-y: scroll; |
| } |
| |
| .contents { |
| height: 100%; |
| width: 4000px; |
| background-image: repeating-linear-gradient(to right, white, silver 250px); |
| } |
| </style> |
| <script src="../../resources/ui-helper.js"></script> |
| <script src="../../resources/js-test.js"></script> |
| <script> |
| jsTestIsAsync = true; |
| observedScrollLeftBelow1000 = false; |
| |
| addEventListener("load", async () => { |
| scrollContainer = document.querySelector(".scroll-container"); |
| scrollContainer.scrollTo(1000, 0); |
| await UIHelper.ensurePresentationUpdate(); |
| |
| scrollContainer.addEventListener("scroll", () => { |
| if (scrollContainer.scrollLeft < 1000) |
| observedScrollLeftBelow1000 = true; |
| }); |
| |
| await UIHelper.startMonitoringWheelEvents(); |
| scrollContainer.scrollBy({ top: 0, left: 1000, behavior: "smooth" }); |
| await UIHelper.waitForScrollCompletion(); |
| |
| shouldBeFalse("observedScrollLeftBelow1000"); |
| shouldBe("scrollContainer.scrollLeft", "2000"); |
| finishJSTest(); |
| }); |
| </script> |
| </head> |
| <body> |
| <div class="scroll-container"> |
| <div class="contents"></div> |
| </div> |
| <div id="console"></div> |
| </body> |
| </html> |
