Test http://www.w3.org/2001/DOM-Test-Suite/level2/core/elementsetattributenodens04

<test name='elementsetattributenodens04' schemaLocation='http://www.w3.org/2001/DOM-Test-Suite/Level-2 dom2.xsd'>
     <metadata>
          <title>elementsetattributenodens04</title>
          <creator>IBM</creator>
          <description> The method setAttributeNodeNS Adds a new attribute and raises an INUSE_ATTRIBUTE_ERR if newAttr is already an attribute of another Element object. Create two new element nodes and a new attribute node. Attempt to add the same attribute node to the same two element nodes. Check if an INUSE_ATTRIBUTE_ERR is thrown. </description>
          <contributor>Neil Delima</contributor>
          <date qualifier='created'>2002-04-28</date>
          <subject resource='http://www.w3.org/TR/DOM-Level-2-Core/core#ID-ElSetAtNodeNS'/>
</metadata>
     <implementationAttribute name='namespaceAware' value='true'/>
     <var name='doc' type='Document'/>
     <var name='element1' type='Element'/>
     <var name='element2' type='Element'/>
     <var name='attribute' type='Attr'/>
     <var name='newAttribute' type='Attr'/>
     <load var='doc' href='staffNS' willBeModified='true'/>
     <createElementNS var='element1' obj='doc' namespaceURI='"http://www.w3.org/DOM/Test"' qualifiedName='"elem1"'/>
     <createElementNS var='element2' obj='doc' namespaceURI='"http://www.w3.org/DOM/Test"' qualifiedName='"elem2"'/>
     <createAttributeNS var='attribute' obj='doc' namespaceURI='"http://www.w3.org/DOM/Test"' qualifiedName='"attr"'/>
     <setAttributeNodeNS var='newAttribute' obj='element1' newAttr='attribute'/>
     <assertDOMException id='elementsetattributenodens04'>
          <INUSE_ATTRIBUTE_ERR>
               <setAttributeNodeNS var='newAttribute' obj='element2' newAttr='attribute'/>
          </INUSE_ATTRIBUTE_ERR>
     </assertDOMException>
</test>

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