- http://david.heinemeierhansson.com/2014/tdd-is-dead-long-live-testing.html
- http://blog.8thlight.com/uncle-bob/2014/04/25/MonogamousTDD.html
- http://david.heinemeierhansson.com/2014/test-induced-design-damage.html
- http://blog.8thlight.com/uncle-bob/2014/05/01/Design-Damage.html
- http://david.heinemeierhansson.com/2014/slow-database-test-fallacy.html
- http://blog.8thlight.com/uncle-bob/2014/04/30/When-tdd-does-not-work.html
- https://www.destroyallsoftware.com/blog/2014/tdd-straw-men-and-rhetoric
- http://articles.coreyhaines.com/posts/active-record-spec-helper/
- http://martinfowler.com/bliki/UnitTest.html