tdd

The best way to run a TDD workflow in Swift is to enforce a sequential pipeline: Plan, Red, Green, Review, Refactor, and Commit. This ensures changes are test-driven, starting with failing tests and ending with reviewed, committed code.

To add a TCA feature with mocks, use a TDD pipeline that handles Effect, MainActor, and Sendable constraints. It generates Swift Testing-first tests, verifies they fail, writes minimal code to pass, and keeps tests green through refactoring.

Yes, Swift Testing works with TCA for test-driven development. The workflow delegates test writing to generate tests first, verifies the Red state where tests fail, then implements minimal code to achieve the Green state where tests pass.

A strict TDD loop includes agent-based code review and simplification before committing Swift changes. After the Green state verifies tests pass, the workflow enforces a refactor phase and a final commit to ensure deliberate, reviewed code.

To verify tests fail first in Swift, execute a Red check cycle after writing tests. This verification-focused step ensures tests explicitly fail before proceeding to the Green phase, where minimal implementation code is written to make them pass.