Use Case Testing
What is the Use Case?
A use case is an approach for system analysis that identifies, clarifies, and organises needs. Use cases are a collection of conceivable sequences of interaction between the system and the user in a specific environment to achieve a specific goal.

It is a document of action performed by the user and how the system behaved on it.

https://erpsolutions.oodles.io/developer-blogs/Use-Case-Testing-and...