Test http://www.w3.org/2001/DOM-Test-Suite/level2/core/prefix11

<test name='prefix11' schemaLocation='http://www.w3.org/2001/DOM-Test-Suite/Level-2 dom2.xsd'>
     <metadata>
          <title>prefix11</title>
          <creator>NIST</creator>
          <description> The "setPrefix(prefix)" method raises a NAMESPACE_ERR DOMException if the specified prefix is set on a node with a namespaceURI that is null. Attempt to insert a new namespace prefix on the second employee node. An exception should be raised since the namespace prefix is set on a node whose namespaceURI is null. </description>
          <contributor>Mary Brady</contributor>
          <date qualifier='created'>2001-08-17</date>
          <subject resource='http://www.w3.org/TR/DOM-Level-2-Core/core#xpointer(id('ID-258A00AF')/constant[@name='NAMESPACE_ERR'])'/>
          <subject resource='http://www.w3.org/TR/DOM-Level-2-Core/core#'/>
          <subject resource='http://www.w3.org/TR/DOM-Level-2-Core/core#xpointer(id('')/setraises/exception[@name='DOMException']/descr/p[substring-before(.,':')='NAMESPACE_ERR'])'/>
</metadata>
     <var name='doc' type='Document'/>
     <var name='elementList' type='NodeList'/>
     <var name='employeeNode' type='Node'/>
     <var name='namespaceURI' type='DOMString'/>
     <load var='doc' href='staffNS' willBeModified='true'/>
     <getElementsByTagName interface='Document' obj='doc' tagname='"employee"' var='elementList'/>
     <item interface='NodeList' obj='elementList' index='1' var='employeeNode'/>
     <namespaceURI obj='employeeNode' var='namespaceURI'/>
     <assertDOMException id='throw_NAMESPACE_ERR'>
          <NAMESPACE_ERR>
               <prefix obj='employeeNode' value='"employee1"'/>
          </NAMESPACE_ERR>
     </assertDOMException>
</test>

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