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Diffstat (limited to 'gfx/layers/apz/test/mochitest/helper_drag_root_scrollbar.html')
-rw-r--r-- | gfx/layers/apz/test/mochitest/helper_drag_root_scrollbar.html | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/gfx/layers/apz/test/mochitest/helper_drag_root_scrollbar.html b/gfx/layers/apz/test/mochitest/helper_drag_root_scrollbar.html new file mode 100644 index 0000000000..1665e168cb --- /dev/null +++ b/gfx/layers/apz/test/mochitest/helper_drag_root_scrollbar.html @@ -0,0 +1,61 @@ +<!DOCTYPE HTML> +<html> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width; initial-scale=1.0"> + <title>Dragging the mouse on the viewport's scrollbar</title> + <script type="application/javascript" src="apz_test_native_event_utils.js"></script> + <script type="application/javascript" src="apz_test_utils.js"></script> + <script src="/tests/SimpleTest/paint_listener.js"></script> + <style> + .content { + width: 1000px; + height: 5000px; + } + </style> + <script type="text/javascript"> + +async function test() { + let scrollPromise = new Promise(resolve => { + window.addEventListener("scroll", resolve, {once: true}); + }); + + // Do the scroll in one increment so that when the scroll event fires + // we're done all the scrolling we're going to do. + var dragFinisher = await promiseVerticalScrollbarDrag(window, 20, 20); + if (!dragFinisher) { + ok(true, "No scrollbar, can't do this test"); + return; + } + + // the events above might be stuck in APZ input queue for a bit until the + // layer is activated, so we wait here until the scroll event listener is + // triggered. + await scrollPromise; + + await dragFinisher(); + + // Flush everything just to be safe + await promiseOnlyApzControllerFlushed(); + + // After dragging the scrollbar 20px on a 1000px-high viewport, we should + // have scrolled approx 2% of the 5000px high content. There might have been + // scroll arrows and such so let's just have a minimum bound of 50px to be safe. + ok(window.scrollY > 50, "Scrollbar drag resulted in a vertical scroll position of " + window.scrollY); + + // Check that we did not get spurious horizontal scrolling, as we might if the + // drag gesture is mishandled by content as a select-drag rather than a scrollbar + // drag. + is(window.scrollX, 0, "Scrollbar drag resulted in a horizontal scroll position of " + window.scrollX); +} + +waitUntilApzStable() +.then(test) +.then(subtestDone, subtestFailed); + + </script> +</head> +<body> + <div class="content">Some content to ensure the root scrollframe is scrollable</div> +</body> +</html> |