Test http://www.w3.org/2001/DOM-Test-Suite/level3/core/documentgetdocumenturi03

<test name='documentgetdocumenturi03' schemaLocation='http://www.w3.org/2001/DOM-Test-Suite/Level-3 dom3.xsd'>
     <metadata>
          <title>documentgetdocumenturi03</title>
          <creator>IBM</creator>
          <description> Import the documentElement node of this document into a new document. Since this node is now owned by the importing document, its documentURI attribute value should be null </description>
          <contributor>Neil Delima</contributor>
          <date qualifier='created'>2002-06-10</date>
          <subject resource='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core#Document3-documentURI'/>
</metadata>
     <var name='doc' type='Document'/>
     <var name='newDoc' type='Document'/>
     <var name='importedOwner' type='Document'/>
     <var name='docElem' type='Element'/>
     <var name='docElemImported' type='Node'/>
     <var name='docURI' type='DOMString'/>
     <var name='domImpl' type='DOMImplementation'/>
     <var name='nullDocType' type='DocumentType' isNull='true'/>
     <var name='rootNS' type='DOMString'/>
     <var name='rootName' type='DOMString'/>
     <load var='doc' href='hc_staff' willBeModified='false'/>
     <implementation var='domImpl' obj='doc'/>
     <documentElement var='docElem' obj='doc'/>
     <namespaceURI var='rootNS' obj='docElem' interface='Node'/>
     <tagName var='rootName' obj='docElem'/>
     <createDocument var='newDoc' obj='domImpl' namespaceURI='rootNS' qualifiedName='rootName' doctype='nullDocType'/>
     <importNode var='docElemImported' obj='newDoc' importedNode='docElem' deep='false'/>
     <ownerDocument var='importedOwner' obj='docElemImported'/>
     <documentURI var='docURI' obj='importedOwner'/>
     <assertNull actual='docURI' id='documentgetdocumenturi03'/>
</test>

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