- External reference: https://en.wikipedia.org/wiki/Behavior-driven_development
Like TDD, you make something emerge from the test. But in contrast to TDD, here the specification emerges, in collaboration with the stakeholders. This is why it need an ubiquitous language for non technical people and technical people to work together and talk to each other.
Unlike TDD, where you make technical tests that drive the design by failing and then passing, here the tests drive the specification, because they represent end user behaviors. For instance, they generally describe stories’ acceptance criteria.
Generally using pseudo human language such à Gherkin.
behavior-driven development (BDD) is an agile software development process that encourages collaboration among developers, QA, and non-technical or business participants in a software project
encourages teams to use conversation and concrete examples to formalize a shared understanding of how the application should behave
BDD is principally an idea about how software development should be managed by both business interests and technical insight, the practice of BDD does assume the use of specialized software tools to support the development process
The tools serve to add automation to the ubiquitous language that is a central theme of BDD
BDD is largely facilitated through the use of a simple domain-specific language (DSL) using natural-language constructs (e.g., English-like sentences) that can express the behaviour and the expected outcomes.
Cucumber School - Give Me An Example
- External reference:
Notes linking here
- arrange act assert
- Behavior Driven Pragmatism
- builder, user or architect
- definition of done driven development
- how to organise your tests?
- Liz Keogh
- people tend to expect behavior science to provide answers that will prevent the discussion, when it actually only provides appropriate fundation to help people have a fruitful discussion
- tdd vs bdd
- test-driven development
- tragedy of bdd: 10 years of Doing Behaviour-Driven Development All Wrong
- verified/proved promised contracts based programming
- when Behaviour Driven Development goes wrong