BDD is an agile methodology based software development process which is based on Test Driven Development.
BDD does not create executable test cases but executable documentation. In BDD, behavior and targets are specified as texts. This allows them to be tested as executable documentation. Requirements are mapped as user stories.
TOSCA supports the BDD in such a way that,
- A clear distinction is made between user stories (Requirements), scenarios (TestCase-Design Instances) and test cases.
- Scenarios are mapped in an easily readable format.
- All processes and actions are traceable.