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Diffstat (limited to 'gfx/layers/apz/test/mochitest/helper_reset_zoom_bug1818967.html')
-rw-r--r-- | gfx/layers/apz/test/mochitest/helper_reset_zoom_bug1818967.html | 55 |
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diff --git a/gfx/layers/apz/test/mochitest/helper_reset_zoom_bug1818967.html b/gfx/layers/apz/test/mochitest/helper_reset_zoom_bug1818967.html new file mode 100644 index 0000000000..4a4d7e34ca --- /dev/null +++ b/gfx/layers/apz/test/mochitest/helper_reset_zoom_bug1818967.html @@ -0,0 +1,55 @@ +<!DOCTYPE html> +<html lang="en"><head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<meta charset="utf-8"> +<title>Test that we do not checkerboard after resetting the pinch-zoom scale</title> +<script type="application/javascript" src="apz_test_utils.js"></script> +<script type="application/javascript" src="apz_test_native_event_utils.js"></script> +<script src="/tests/SimpleTest/paint_listener.js"></script> +<style> +.scrolled { + width: 10000px; + height: 10000px; + background: linear-gradient(lime, cyan); +} +</style> +</head><body> + <div class="scrolled"></div> +</body> + +<script type="application/javascript"> +async function test() { + var utils = SpecialPowers.getDOMWindowUtils(window); + var scrollerId = utils.getViewId(document.documentElement); + + // Zoom in to the maximum level + utils.setResolutionAndScaleTo(10.0); + await promiseApzFlushedRepaints(); + + // Scroll the layout viewport to around middle of the page + window.scrollTo(window.scrollMaxX / 2, window.scrollMaxY / 2); + await promiseApzFlushedRepaints(); + + // Scroll the visual viewport to the bottom of the layout viewport. + // This creates an offset between the visual and layout viewport + // offsets which is needed to trigger the bug. + utils.scrollToVisual(window.scrollX, + window.scrollY + (0.9 * document.documentElement.clientHeight), + utils.UPDATE_TYPE_MAIN_THREAD, + utils.SCROLL_MODE_INSTANT); + await promiseApzFlushedRepaints(); + + // Reset the zoom level to 1.0x + utils.setResolutionAndScaleTo(1.0); + await promiseApzFlushedRepaints(); + + // Assert that we're not checkerboarded + assertNotCheckerboarded(utils, scrollerId, "After resetting zoom level"); +} + +waitUntilApzStable() +.then(test) +.then(subtestDone, subtestFailed); + +</script> +</html> |