I've been messing around with some of the official schemas out there with the goal of breaking tools. The one linked from the title is an impressive 240k or so and includes 6 other schemas which aren't exactly slim either. Its a cracker to throw at DOM based parsers out there, for some reason they have issues.
But what it made my think, there is the ACID test for CSS, but where is the evil test for Schema that really sets out to break tools? One that implements all of XML Schema and uses it in fully compliant, but deeply twisted ways.
Anyone know of the ultimate test schema?