Test http://www.w3.org/2001/DOM-Test-Suite/level2/core/elementsetattributenodens01

<test name='elementsetattributenodens01' schemaLocation='http://www.w3.org/2001/DOM-Test-Suite/Level-2 dom2.xsd'>
     <metadata>
          <title>elementsetattributenodens01</title>
          <creator>IBM</creator>
          <description> Testing Element.setAttributeNodeNS: If an attribute with that local name and that namespace URI is already present in the element, it is replaced by the new one. Create a new element and two new attribute nodes (in the same namespace and same localNames). Add the two new attribute nodes to the element node using the setAttributeNodeNS method. Check that only one attribute is added, check the value of this attribute. </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='element' type='Element'/>
     <var name='attribute1' type='Attr'/>
     <var name='attribute2' type='Attr'/>
     <var name='attrNode' type='Attr'/>
     <var name='attrName' type='DOMString'/>
     <var name='attrNS' type='DOMString'/>
     <var name='attrValue' type='DOMString'/>
     <var name='attributes' type='NamedNodeMap'/>
     <var name='newAttribute' type='Attr'/>
     <var name='length' type='int'/>
     <load var='doc' href='staff' willBeModified='true'/>
     <createElementNS var='element' obj='doc' namespaceURI='"http://www.w3.org/DOM/Test/Level2"' qualifiedName='"new:element"'/>
     <createAttributeNS var='attribute1' obj='doc' namespaceURI='"http://www.w3.org/DOM/Test/att1"' qualifiedName='"p1:att"'/>
     <createAttributeNS var='attribute2' obj='doc' namespaceURI='"http://www.w3.org/DOM/Test/att1"' qualifiedName='"p2:att"'/>
     <value obj='attribute2' value='"value2"' interface='Attr'/>
     <setAttributeNodeNS var='newAttribute' obj='element' newAttr='attribute1'/>
     <setAttributeNodeNS var='newAttribute' obj='element' newAttr='attribute2'/>
     <getAttributeNodeNS var='attrNode' obj='element' namespaceURI='"http://www.w3.org/DOM/Test/att1"' localName='"att"'/>
     <nodeName var='attrName' obj='attrNode'/>
     <namespaceURI var='attrNS' obj='attrNode'/>
     <assertEquals actual='attrName' expected='"p2:att"' id='elementsetattributenodens01_attrName' ignoreCase='false'/>
     <assertEquals actual='attrNS' expected='"http://www.w3.org/DOM/Test/att1"' id='elementsetattributenodens01_attrNS' ignoreCase='false'/>
     <attributes var='attributes' obj='element'/>
     <length var='length' obj='attributes' interface='NamedNodeMap'/>
     <assertEquals actual='length' expected='1' id='length' ignoreCase='false'/>
</test>

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