Gojko Adzic » The Poka-Yoke principle and how to write better software

Absolutely fantastic:

The Poka-Yoke principle and how to write better software

Basic Tenents of Poka-Yoke Testing:

• Unit Tests have to be as fast as lightning
• Quick and slow tests should be separated
• Tests must be reliable
• Tests must be repeatable

This is the gist of what I try to teach coming on to any new project. Beautifully written. I'll have to steal some of the language simply because it gets the point across so well.