Some ancient history ¶
Back in 2003 I started work on a framework called JBehave. It was an experiment to see what JUnit might have looked like if it had been designed from the ground up for TDD rather than as a unit testing framework. I was also starting to use the phrase “behaviour-driven development” to describe what I meant. The jbehave.org domain was registered and the first lines of code written on Christmas Eve 2003, much to my wife’s bemusement. Over time JBehave grew a much more interesting aspect in the form of a framework for defining and running scenarios, or automated acceptance tests.
How about that? You wait ages for a BDD framework in .net and then two come along at once! Ok, to be fair NSpec has been around for a while. However I’m talking about describing application behaviour in terms of stories and scenarios, to complement NSpec’s description of interactions between objects. (As a side note, I would love to see NSpec adopt rspec’s describe/it vocabulary rather than using contexts and specifications.
rbehave is a framework for defining and executing application requirements. Using the vocabulary of behaviour-driven development, you define a feature in terms of a Story with Scenarios that describe how the feature behaves. Using a minimum of syntax (a few “quotes” mostly), this becomes an executable and self-describing requirements document.
BDD has been around in the Ruby world for a while now, in the form of the excellent rspec framework, which describes the behaviour of objects at the code level.