assertEquals( AliasDerefMode.NEVER_DEREF_ALIASES, searchRequest.getDerefAliases() );
assertEquals( 0, searchRequest.getSizeLimit() );
assertEquals( 0, searchRequest.getTimeLimit() );
assertEquals( false, searchRequest.getTypesOnly() );
ExprNode filter = searchRequest.getFilter();
PresenceNode presenceNode = ( PresenceNode ) filter;
assertNotNull( presenceNode );
assertEquals( "objectClass", presenceNode.getAttribute() );