TDD Workflow

Test-driven development for new business logic requires writing a failing test first, then creating minimal production code to pass it, and finally refactoring. This ensures correctness and guides the implementation process.

The Red-Green-Refactor cycle in TDD is a repeating process where you write a failing test, implement the minimum code to make it pass, and then clean up the code without changing its behavior.

Test-driven development becomes overkill for simple or trivial code where the overhead of writing tests first outweighs the maintainability benefits. It is most effective for complex state management scenarios and algorithms.

Yes, you can use the TDD workflow for complex state management scenarios. It enforces the Red-Green-Refactor cycle, running tests frequently to verify correctness and reduce bugs in critical functions.

To apply TDD to implement a calculate_discount function, start by writing a failing test for the expected discount behavior, then write the minimal code required to pass that test, and refactor the result.