With BDD Extension Framework for Unity Test Tools you will be able to develop your software using the BDD approach.

Fully integrated with the standard Unity Test Tools: you can use the tests created with the Unity BDD Extension as a regular Unity Test Tools Integration Test. 

• Boost your game and app development creating Behaviour Driven Development scenarios directly from the Unity Editor.

• Standardise your Acceptance Criteria and Acceptance Tests using the Given - When - Then format.

• Read the complete scenario via inspector and test result.

• Reuse your test code.

• Compose your integration tests dynamically.

If you are into continuous integration, you can run your tests in batch mode: relevant information in the output will guide you in case of test failure.

Download it on the Unity AssetStore

Read more: Develop your Unity games and applications using BDD.