Test http://www.w3.org/2001/DOM-Test-Suite/level1/core/nodeinsertbefore

<test name='nodeinsertbefore' schemaLocation='http://www.w3.org/2001/DOM-Test-Suite/Level-1 dom1.xsd'>
     <metadata>
          <title>nodeInsertBefore</title>
          <creator>NIST</creator>
          <description> The "insertBefore(newChild,refChild)" method inserts the node "newChild" before the node "refChild". Insert a newly created Element node before the eigth child of the second employee and check the "newChild" and "refChild" after insertion for correct placement. </description>
          <contributor>Mary Brady</contributor>
          <date qualifier='created'>2001-08-17</date>
          <subject resource='http://www.w3.org/TR/1998/REC-DOM-Level-1-19981001/level-one-core#ID-952280727'/>
</metadata>
     <var name='doc' type='Document'/>
     <var name='elementList' type='NodeList'/>
     <var name='employeeNode' type='Node'/>
     <var name='childList' type='NodeList'/>
     <var name='refChild' type='Node'/>
     <var name='newChild' type='Node'/>
     <var name='child' type='Node'/>
     <var name='childName' type='DOMString'/>
     <var name='length' type='int'/>
     <var name='insertedNode' type='Node'/>
     <var name='actual' type='List'/>
     <var name='expectedWithWhitespace' type='List'>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
     </var>
     <var name='expectedWithoutWhitespace' type='List'>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
     </var>
     <var name='expected' type='List'/>
     <load var='doc' href='staff' willBeModified='true'/>
     <getElementsByTagName interface='Document' obj='doc' tagname='"employee"' var='elementList'/>
     <item interface='NodeList' obj='elementList' index='1' var='employeeNode'/>
     <childNodes obj='employeeNode' var='childList'/>
     <length var='length' obj='childList' interface='NodeList'/>
     <if>
          <equals actual='length' expected='6' ignoreCase='false'/>
          <item interface='NodeList' obj='childList' index='3' var='refChild'/>
          <assign var='expected' value='expectedWithoutWhitespace'/>
          <else>
               <item interface='NodeList' obj='childList' index='7' var='refChild'/>
               <assign var='expected' value='expectedWithWhitespace'/>
          </else>
     </if>
     <createElement obj='doc' tagName='"newChild"' var='newChild'/>
     <insertBefore var='insertedNode' obj='employeeNode' newChild='newChild' refChild='refChild'/>
     <for-each collection='childList' member='child'>
          <nodeName obj='child' var='childName'/>
          <append collection='actual' item='childName'/>
     </for-each>
     <assertEquals actual='actual' expected='expected' id='nodeNames' ignoreCase='false'/>
</test>

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