<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=895974 --> <head> <meta charset="utf-8"> <title>Test for Bug 895974</title> <script src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> <script type="application/javascript"> /** Test for Bug 895974 **/ SimpleTest.waitForExplicitFinish(); addLoadEvent(function() { var frag = document.createDocumentFragment(); var span = document.createElement("span"); var div = document.createElement("div"); var text = document.createTextNode("help"); frag.appendChild(document.createTextNode("fail")); frag.appendChild(span); frag.appendChild(text); frag.appendChild(div); frag.appendChild(document.createTextNode("fail")); is(text.nextElementSibling, div, "nextElementSibling should work on text"); is(text.previousElementSibling, span, "previousElementSibling should work on text"); is(document.firstElementChild, document.documentElement, "firstElementChild should work on document"); is(document.lastElementChild, document.documentElement, "lastElementChild should work on document"); is(document.children.length, 1, "Document has one element kid"); is(document.children[0], document.documentElement, "Document only element child is <html>"); is(frag.firstElementChild, span, "firstElementChild should work on document fragment"); is(frag.lastElementChild, div, "lastElementChild should work on document fragment"); is(frag.children.length, 2, "Document fragment has two element kids"); is(frag.children[0], span, "Document fragment first element child is span"); is(frag.children[1], div, "Document fragment second element child is div"); is(document.documentElement.firstElementChild, document.head, "firstElementChild should work on element"); is(document.documentElement.lastElementChild, document.body, "lastElementChild should work on element"); is(document.documentElement.children.length, 2, "<html> has two element kids"); is(document.documentElement.children[0], document.head, "<html> first element child is head"); is(document.documentElement.children[1], document.body, "<html> second element child is body"); SimpleTest.finish(); }); </script> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=895974">Mozilla Bug 895974</a> <p id="display"></p> <div id="content" style="display: none"> </div> <pre id="test"> </pre> </body> </html>