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

<test name='hc_nodereplacechildnewchildexists' schemaLocation='http://www.w3.org/2001/DOM-Test-Suite/Level-1 dom1.xsd'>
     <metadata>
          <title>hc_nodeReplaceChildNewChildExists</title>
          <creator>Curt Arnold</creator>
          <description> If the "newChild" is already in the tree, it is first removed before the new one is added. Retrieve the second "p" and replace "acronym" with its "em". </description>
          <date qualifier='created'>2002-06-09</date>
          <subject resource='http://www.w3.org/TR/1998/REC-DOM-Level-1-19981001/level-one-core#ID-785887307'/>
          <subject resource='http://www.w3.org/Bugs/Public/show_bug.cgi?id=246'/>
</metadata>
     <var name='doc' type='Document'/>
     <var name='elementList' type='NodeList'/>
     <var name='employeeNode' type='Node'/>
     <var name='childList' type='NodeList'/>
     <var name='oldChild' type='Node' isNull='true'/>
     <var name='newChild' type='Node' isNull='true'/>
     <var name='child' type='Node'/>
     <var name='childName' type='DOMString'/>
     <var name='childNode' type='Node'/>
     <var name='actual' type='List'/>
     <var name='expected' type='List'>
          <member/>
          <member/>
          <member/>
          <member/>
          <member/>
     </var>
     <var name='replacedChild' type='Node'/>
     <var name='nodeType' type='int'/>
     <load var='doc' href='hc_staff' willBeModified='true'/>
     <getElementsByTagName interface='Document' obj='doc' tagname='"p"' var='elementList'/>
     <item interface='NodeList' obj='elementList' index='1' var='employeeNode'/>
     <getElementsByTagName interface='Element' obj='employeeNode' var='childList' tagname='"*"'/>
     <item interface='NodeList' obj='childList' index='0' var='newChild'/>
     <item interface='NodeList' obj='childList' index='5' var='oldChild'/>
     <replaceChild var='replacedChild' obj='employeeNode' newChild='newChild' oldChild='oldChild'/>
     <assertSame actual='replacedChild' expected='oldChild' id='return_value_same'/>
     <for-each collection='childList' member='childNode'>
          <nodeName var='childName' obj='childNode'/>
          <nodeType var='nodeType' obj='childNode'/>
          <if>
               <equals actual='nodeType' expected='1' ignoreCase='false'/>
               <append collection='actual' item='childName'/>
               <else>
                    <assertEquals actual='nodeType' expected='3' id='textNodeType' ignoreCase='false'/>
                    <assertEquals actual='childName' expected='"#text"' id='textNodeName' ignoreCase='false'/>
               </else>
          </if>
     </for-each>
     <assertEquals actual='actual' expected='expected' id='childNames' ignoreCase='auto'/>
</test>

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