LayoutTests/fast/visual-viewport/scroll-event-fired.html - WebKit - Git at Google

 <!DOCTYPE html>
 <style>
   body {
     height: 2000px;
     width: 2000px;
   }
 </style>

 <script src="../../resources/testharness.js"></script>
 <script src="../../resources/testharnessreport.js"></script>
 <script>
     var pageScaleFactor = 2;

     var test = async_test('Verify that a scroll event gets fired on window.visualViewport when its offset changes');

     function scrollEventHandler() {
         test.done();
     }

     function doAfterZooming() {
         window.visualViewport.addEventListener('scroll', scrollEventHandler);
         window.scrollTo(1000, 1000);
     }

     function getUIScript() {
         return `(function() {
             uiController.zoomToScale(${pageScaleFactor}, function() {
                 uiController.uiScriptComplete(uiController.zoomScale);
             });
         })();`;
     }

     window.onload = function() {
         testRunner.runUIScript(getUIScript(), doAfterZooming);
     };
 </script>
	<!DOCTYPE html>
	<style>
	body {
	height: 2000px;
	width: 2000px;
	}
	</style>

	<script src="../../resources/testharness.js"></script>
	<script src="../../resources/testharnessreport.js"></script>
	<script>
	var pageScaleFactor = 2;

	var test = async_test('Verify that a scroll event gets fired on window.visualViewport when its offset changes');

	function scrollEventHandler() {
	test.done();
	}

	function doAfterZooming() {
	window.visualViewport.addEventListener('scroll', scrollEventHandler);
	window.scrollTo(1000, 1000);
	}

	function getUIScript() {
	return `(function() {
	uiController.zoomToScale(${pageScaleFactor}, function() {
	uiController.uiScriptComplete(uiController.zoomScale);
	});
	})();`;
	}

	window.onload = function() {
	testRunner.runUIScript(getUIScript(), doAfterZooming);
	};
	</script>