| <!DOCTYPE html> |
| <script src="../../../resources/testharness.js"></script> |
| <script src="../../../resources/testharnessreport.js"></script> |
| <script src="../../../resources/gesture-util.js"></script> |
| <body style="margin:0"> |
| <div id="overflowDiv" style="width:1000px; height:500px; overflow:scroll"> |
| <div style="height: 1000px"></div> |
| </div> |
| <div style="height: 1000px"></div> |
| </body> |
| <script> |
| internals.settings.setScrollAnimatorEnabled(false); |
| var overflowDiv = document.getElementById('overflowDiv'); |
| |
| promise_test (async () => { |
| overflowDiv.addEventListener("scroll", () => { |
| Promise.reject('overflowDiv should not scroll.'); |
| }); |
| |
| // Move the mouse over the vertical scrollbar. |
| await mouseMoveTo(790, 300); |
| |
| // Scroll down precisely by 30 px. |
| await smoothScroll(30, 790, 300, GestureSourceType.MOUSE_INPUT, 'down', SPEED_INSTANT); |
| |
| await waitFor( () => {return window.scrollY == 30}); |
| }, "Test that wheel scrolling over the page scrollbar scrolls " + |
| "the page. We also placed an overflow div below the " + |
| "scrollbar to make sure we target the page and not the div " + |
| "in that case."); |
| </script> |
