byte[] data = baos.toByteArray();
in = new ObjectInputStream( new ByteArrayInputStream( data ) );
Rdn rdn2 = new Rdn( schemaManager );
rdn2.readExternal( in );
assertEquals( rdn1, rdn2 );
assertEquals( "doe", rdn2.getValue( "cn" ) );
assertEquals( "Doe", rdn2.getValue().getString() );
}