scrollend-event-fired-to-window.html (2207B)
1 <!DOCTYPE HTML> 2 <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1"> 3 <script src="/resources/testharness.js"></script> 4 <script src="/resources/testharnessreport.js"></script> 5 <script src="/resources/testdriver.js"></script> 6 <script src="/resources/testdriver-actions.js"></script> 7 <script src="/resources/testdriver-vendor.js"></script> 8 <script src="scroll_support.js"></script> 9 <style> 10 #spacer { 11 height: 100vh; 12 width: 100px; 13 } 14 #targetDiv { 15 width: 200px; 16 height: 200px; 17 overflow: scroll; 18 } 19 #innerDiv { 20 width: 400px; 21 height: 400px; 22 } 23 </style> 24 25 <body style="margin:0" onload=runTest()> 26 <div id="targetDiv"> 27 <div id="innerDiv"></div> 28 </div> 29 <div id="spacer"></div> 30 </body> 31 32 <script> 33 var target_div = document.getElementById('targetDiv'); 34 async function resetScrollers(test) { 35 await waitForScrollReset(test, target_div); 36 await waitForScrollReset(test, document.scrollingElement); 37 } 38 39 function fail() { 40 assert_true(false); 41 } 42 43 function runTest() { 44 promise_test(async (t) => { 45 await resetScrollers(t); 46 await waitForCompositorCommit(); 47 48 assert_equals(document.scrollingElement.scrollTop, 0, 49 "document should not be scrolled"); 50 51 let scrollend_promise = waitForScrollendEventNoTimeout(target_div); 52 let max_target_div_scroll_top = target_div.scrollHeight - target_div.clientHeight; 53 target_div.scrollTo({ top: target_div.scrollHeight, left: 0 }); 54 await scrollend_promise; 55 assert_approx_equals(target_div.scrollTop, max_target_div_scroll_top, 1, 56 "target_div should be fully scrolled down"); 57 58 scrollend_promise = waitForScrollendEventNoTimeout(window); 59 target_div.addEventListener("scrollend", fail); 60 // Scroll up on target div and wait for the doc to get scrollend event. 61 await scrollElementDown(target_div, target_div.clientHeight + 25); 62 await scrollend_promise; 63 64 target_div.removeEventListener("scrollend", fail); 65 assert_greater_than(document.scrollingElement.scrollTop, target_div.clientHeight - 1, 66 "document is scrolled by the height of target_div"); 67 }, "testing, vertical"); 68 } 69 </script>