Testing DDL

I've recently become curious as to how people are testing their DDL.
So far, I've found:

Re: The Right Way to manage schemas in SCM systems
http://archives.postgresql.org/pgsql-sql/2006-08/msg00114.php

http://www.bigsmoke.us/postgresql-unit-testing/

http://utplsql.sourceforge.net/

http://www.opensourcetesting.org/unit_sql.php

Has anyone seen other approaches?

-- 
Ian Tegebo