11cb0ef41Sopenharmony_ci<!DOCTYPE html> 21cb0ef41Sopenharmony_ci<html> 31cb0ef41Sopenharmony_ci<head> 41cb0ef41Sopenharmony_ci<script src="/resources/testharness.js"></script> 51cb0ef41Sopenharmony_ci<script src="/resources/testharnessreport.js"></script> 61cb0ef41Sopenharmony_ci<script src="/resources/testdriver.js"></script> 71cb0ef41Sopenharmony_ci<script src="/resources/testdriver-actions.js"></script> 81cb0ef41Sopenharmony_ci<script src="/resources/testdriver-vendor.js"></script> 91cb0ef41Sopenharmony_ci<style> 101cb0ef41Sopenharmony_ci 111cb0ef41Sopenharmony_cibody { margin: 0; padding: 10px; } 121cb0ef41Sopenharmony_ci.space { height: 2000px; } 131cb0ef41Sopenharmony_ci 141cb0ef41Sopenharmony_ci#scroller { 151cb0ef41Sopenharmony_ci border: 3px solid green; 161cb0ef41Sopenharmony_ci position: absolute; 171cb0ef41Sopenharmony_ci z-index: 0; 181cb0ef41Sopenharmony_ci overflow: auto; 191cb0ef41Sopenharmony_ci padding: 10px; 201cb0ef41Sopenharmony_ci width: 250px; 211cb0ef41Sopenharmony_ci height: 150px; 221cb0ef41Sopenharmony_ci} 231cb0ef41Sopenharmony_ci 241cb0ef41Sopenharmony_ci.ifr { 251cb0ef41Sopenharmony_ci border: 3px solid blue; 261cb0ef41Sopenharmony_ci width: 200px; 271cb0ef41Sopenharmony_ci height: 100px; 281cb0ef41Sopenharmony_ci} 291cb0ef41Sopenharmony_ci 301cb0ef41Sopenharmony_ci</style> 311cb0ef41Sopenharmony_ci</head> 321cb0ef41Sopenharmony_ci<body> 331cb0ef41Sopenharmony_ci<div id=scroller> 341cb0ef41Sopenharmony_ci <iframe srcdoc="SCROLL ME" class=ifr></iframe> 351cb0ef41Sopenharmony_ci <div class=space></div> 361cb0ef41Sopenharmony_ci</div> 371cb0ef41Sopenharmony_ci<div class=space></div> 381cb0ef41Sopenharmony_ci<script> 391cb0ef41Sopenharmony_ci 401cb0ef41Sopenharmony_cipromise_test(async t => { 411cb0ef41Sopenharmony_ci await new test_driver.Actions().scroll(50, 50, 0, 50).send(); 421cb0ef41Sopenharmony_ci // Allow the possibility the scroll is not fully synchronous 431cb0ef41Sopenharmony_ci await t.step_wait(() => scroller.scrollTop === 50); 441cb0ef41Sopenharmony_ci}, "Wheel scroll in iframe chains to containing element."); 451cb0ef41Sopenharmony_ci 461cb0ef41Sopenharmony_ci</script> 471cb0ef41Sopenharmony_ci</body> 481cb0ef41Sopenharmony_ci</html> 49