Behaviour Driven Development(BDD)

requirements in a testable way

• To understand client's needs
• To communicate the needs
• to collaborate with the help of examples
• To produce something of value
• Uses natural language

A good Acceptation Test

• Client's view
• High level
• Uses Domain Specific languages (DSL)
• Short and sweet
• Easy to maintain
• Up to date

Each acceptation criteria is translated to at least on test case

How?

• Given, When, Then
• Emphasize on the behaviour
• Concret but more general
• Declarative over imperative
• As abstract as possible. Should only express the essential
• No Markup (Css, HTML)
• Test cases should not need to change if the internal code is changed

Used in the ATDD