<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=635465 --> <head> <meta charset="utf-8"> <title>Test for Bug 635465</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <script type="application/javascript" src="/tests/SimpleTest/EventUtils.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> <style type="text/css"> #item { position: relative; } .s-menu-section-submenu { position: absolute; display: none; } .open .s-menu-section-submenu { display: block; } </style> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=635465">Mozilla Bug 635465</a> <div id="display"> <div class="item" id="item" onmouseover="showSubmenu(event)" onmouseout="hideSubmenu(event)"> <a href="#" id="firsthover">Hover me</a> <div class="s-menu-section-submenu" id="menu"> <a href="#" id="secondhover">Now hover me</a> </div> </div> </div> <div id="content" style="display: none"> </div> <pre id="test"> <script type="application/javascript;version=1.8"> /** Test for Bug 635465 **/ function showSubmenu(event) { var item = document.getElementById('item'); var width = item.offsetWidth; // IT WORKS IF YOU REMOVE THIS LINE item.className='open'; } function hideSubmenu(event) { document.getElementById('item').className=''; } SimpleTest.waitForExplicitFinish(); function executeTests() { // First flush out layout of firsthover ok($("firsthover").getBoundingClientRect().height > 0, true, "Should have a nonzero height before hover"); // Now trigger a mouseover on firsthover synthesizeMouseAtCenter($("firsthover"), { type: "mousemove" }); ok($("secondhover").getBoundingClientRect().height > 0, true, "Should have a nonzero height for submenu after hover"); // Now determine where secondhover is hanging out var rect = $("secondhover").getBoundingClientRect(); synthesizeMouseAtCenter($("secondhover"), { type: "mousemove" }); // And another mouseover one pixel to the right of where the center used to be synthesizeMouseAtPoint(rect.left + rect.width/2 + 1, rect.top + rect.height/2, { type: "mousemove" }); ok($("secondhover").getBoundingClientRect().height > 0, true, "Should have a nonzero height for submenu after second hover"); // And check computed display of the menu is(getComputedStyle($("menu"), "").display, "block", "Should have block display"); SimpleTest.finish(); } SimpleTest.waitForFocus(executeTests); </script> </pre> </body> </html>