<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=585819 --> <head> <title>Test for Bug 585819</title> <script type="text/javascript" src="/MochiKit/MochiKit.js"></script> <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=585819">Mozilla Bug 585819</a> <p id="display"></p> <div id="content" style="display: none"> <iframe></iframe> </div> <pre id="test"> <script class="testbody" type="text/javascript"> /** Test for Bug 585819 **/ var range = document.createRange(); range.setStartBefore(document.body); var fragment = range.createContextualFragment("<span></span>"); is(fragment.firstChild.localName, "span", "We don't want tag inference here!"); var iframeDoc = document.getElementsByTagName("iframe")[0].contentDocument; var root = iframeDoc.documentElement; is(root.localName, "html", "Wrong root."); root.innerHTML = "<span></span>"; is(root.firstChild.localName, "head", "We want inference here!"); </script> </pre> </body> </html>