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

<test name='hc_elementcreatenewattribute' schemaLocation='http://www.w3.org/2001/DOM-Test-Suite/Level-1 dom1.xsd'>
     <metadata>
          <title>hc_elementCreateNewAttribute</title>
          <creator>Curt Arnold</creator>
          <description> The "setAttributeNode(newAttr)" method adds a new attribute to the Element. Retrieve first address element and add a new attribute node to it by invoking its "setAttributeNode(newAttr)" method. This test makes use of the "createAttribute(name)" method from the Document interface. </description>
          <date qualifier='created'>2002-06-09</date>
          <subject resource='http://www.w3.org/TR/1998/REC-DOM-Level-1-19981001/level-one-core#ID-887236154'/>
          <subject resource='http://www.w3.org/Bugs/Public/show_bug.cgi?id=243'/>
</metadata>
     <var name='doc' type='Document'/>
     <var name='elementList' type='NodeList'/>
     <var name='testAddress' type='Element'/>
     <var name='newAttribute' type='Attr'/>
     <var name='oldAttr' type='Attr'/>
     <var name='districtAttr' type='Attr'/>
     <var name='attrVal' type='DOMString'/>
     <load var='doc' href='hc_staff' willBeModified='true'/>
     <getElementsByTagName interface='Document' obj='doc' tagname='"acronym"' var='elementList'/>
     <item interface='NodeList' obj='elementList' index='0' var='testAddress'/>
     <createAttribute obj='doc' var='newAttribute' name='"lang"'/>
     <setAttributeNode obj='testAddress' var='oldAttr' newAttr='newAttribute'/>
     <assertNull actual='oldAttr' id='old_attr_doesnt_exist'/>
     <getAttributeNode obj='testAddress' var='districtAttr' name='"lang"'/>
     <assertNotNull actual='districtAttr' id='new_district_accessible'/>
     <getAttribute var='attrVal' obj='testAddress' name='"lang"'/>
     <assertEquals actual='attrVal' expected='""' id='attr_value' ignoreCase='false'/>
</test>

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