One good test

(Training Exercise)

For this exercise, we'll work as a mob and test-drive the Greeting Kata to get a feel for what an expressive test looks like in various testing frameworks.

In this activity, we'll:

1. Start with a live code demonstration of the first requirement or two by the instructor
2. For each additional requirement we implement, cycle in a new driver to the keyboard
3. Throughout, but especially during the refactor step, solicit and offer feedback to one another (nitpicks are encouraged)
4. Hold a mini-retrospective contrasting the exercise to our previous experiences

Conversations

Even a simple test like this one can raise a lot of meaningful conversations. Some topics that may come up:

• Arrange-Act-Assert
• Necessary & Sufficient
• Meaningless Test Data
• One line => One action
• DRY in Testing
• Healthy Assertions