Shift Your Paradigm! One Assertion Per Test by Dave Astels February 23, 2004 Summary For some time I've been thinking about how TDD tests can be as simple, as expressive, and as elegant as possible. This article explores a bit about what it's like to make tests as simple and decomposed as possible: aiming for a single assertion in each test. A while ago there was a bit of fuss on the testdrivendev