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

<test name='nodechildnodesappendchild' schemaLocation='http://www.w3.org/2001/DOM-Test-Suite/Level-1 dom1.xsd'>
     <metadata>
          <title>nodechildnodesappendchild</title>
          <creator>NIST</creator>
          <description> Add an element and check that the previously retrieved childNodes NodeList is live. </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-1451460987'/>
          <subject resource='http://www.w3.org/TR/1998/REC-DOM-Level-1-19981001/level-one-core#ID-184E7107'/>
</metadata>
     <var name='doc' type='Document'/>
     <var name='elementList' type='NodeList'/>
     <var name='employeeNode' type='Node'/>
     <var name='childList' type='NodeList'/>
     <var name='createdNode' type='Node'/>
     <var name='expectedLength' type='int'/>
     <var name='length' type='int'/>
     <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='expectedLength' obj='childList' interface='NodeList'/>
     <increment var='expectedLength' value='1'/>
     <createElement obj='doc' var='createdNode' tagName='"text3"'/>
     <appendChild obj='employeeNode' newChild='createdNode' var='employeeNode'/>
     <length var='length' obj='childList' interface='NodeList'/>
     <assertEquals actual='length' expected='expectedLength' ignoreCase='false' id='childNodeLength'/>
</test>

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