I regularly find myself explaining to people the difference between TDD (Test-Driven Development) and BDD (Behaviour-Driven Development). There still seems to be a lot of confusion over this, so I wanted to write this up for reference. Late last year I was interviewed for a virtual panel on InfoQ along with Dan, Gojko, and Liz. […]

Interviewed by RubySource

Last week I had a great chat with Pat Shaughnessy about The Cucumber Book which has been published as an interview on RubySource. Pat really managed to get to the heart of my opinions about how to use Cucumber effectively, so if you’re too busy to read the book, this will give you a good summary […]

Using Cucumber for Load Testing

I sometimes get asked whether it’s possible to use Cucumber to test performance. The way to do it is to specify concrete examples of scenarios that the system will find itself in under stress. For example: Given there are 100,000 users registered on the system When I create a new account Then I should be […]

Fine-Slicing Beats Estimation for Predictability

As requested by JB in the comments to my previous post, here is some data about what happens when a team choose fine-slicing over estimation. You’re about to see a CFD chart drawn by a team who used BDD to break down every requirement into scenarios before they started hacking on them. The items on […]

Using BDD Scenarios to Track Project Velocity

Before you write any code, start by brainstorming all the scenarios you’ll need to cover to make the story done. Do this collaboratively with everyone (devs, testers, UX, business people, product owner) who is interested in the story. Don’t try to make them valid Cucumber scenarios, just make a list of them on a whiteboard, […]