test_bug848088.html (1254B)
1 <!DOCTYPE HTML> 2 <html> 3 <!-- 4 https://bugzilla.mozilla.org/show_bug.cgi?id=848088 5 --> 6 <head> 7 <meta charset="utf-8"> 8 <title>Test for Bug 848088</title> 9 <script src="/tests/SimpleTest/SimpleTest.js"></script> 10 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> 11 <script type="application/javascript"> 12 13 /** Test for Bug 848088 */ 14 15 function test(loopFor, setExpandoAt) 16 { 17 var list = document.getElementsByTagName("audio"); 18 delete list.length; 19 var shouldHaveExpando = false; 20 var realLength = list.length; 21 for (var i = 0; i < loopFor; ++i) { 22 if (i == setExpandoAt) { 23 // Add an expando that shadows. 24 Object.defineProperty(list, "length", { value: "a" }); 25 shouldHaveExpando = true; 26 } 27 var hasExpando = (list.length != realLength); 28 if (shouldHaveExpando != hasExpando) { 29 return false; 30 } 31 } 32 return true; 33 } 34 35 ok(test(200000, 100000), "Correctly detected expando on DOM list object"); 36 37 </script> 38 </head> 39 <body> 40 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=848088">Mozilla Bug 848088</a> 41 <p id="display"></p> 42 <div id="content" style="display: none"> 43 44 </div> 45 <pre id="test"> 46 </pre> 47 </body> 48 </html>