Test http://www.w3.org/2001/DOM-Test-Suite/level3/core/nodeinsertbefore12

<test name='nodeinsertbefore12' schemaLocation='http://www.w3.org/2001/DOM-Test-Suite/Level-3 dom3.xsd'>
     <metadata>
          <title>nodeinsertbefore12</title>
          <creator>IBM</creator>
          <description> The method insertBefore inserts the node newChild before the existing child node refChild. If refChild is null, insert newChild at the end of the list of children. Using insertBefore on a DocumentFragment node attempt to insert a new DocumentFragment node before this DocumentFragment's Element node and verify the last child is still the only child appended to docFrag. </description>
          <contributor>Neil Delima</contributor>
          <date qualifier='created'>2002-06-10</date>
          <subject resource='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core#ID-952280727'/>
</metadata>
     <implementationAttribute name='namespaceAware' value='true'/>
     <var name='doc' type='Document'/>
     <var name='docFrag' type='DocumentFragment'/>
     <var name='docFragNew' type='DocumentFragment'/>
     <var name='elem' type='Element'/>
     <var name='inserted' type='Node'/>
     <var name='appendedChild' type='Node'/>
     <var name='last' type='Node'/>
     <var name='name' type='DOMString'/>
     <load var='doc' href='hc_staff' willBeModified='false'/>
     <createDocumentFragment var='docFrag' obj='doc'/>
     <createDocumentFragment var='docFragNew' obj='doc'/>
     <createElementNS var='elem' obj='doc' qualifiedName='"dom3:elem"' namespaceURI='"http://www.w3.org/DOM/Test"'/>
     <appendChild obj='docFrag' var='appendedChild' newChild='elem'/>
     <insertBefore obj='docFrag' var='inserted' newChild='docFragNew' refChild='elem'/>
     <lastChild obj='docFrag' var='last' interface='Node'/>
     <nodeName obj='last' var='name' interface='Node'/>
     <assertEquals actual='name' expected='"dom3:elem"' id='nodeinsertbefore12' ignoreCase='false'/>
</test>

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