tdd-substrate

Strict TDD red-green-refactor cycles in Python and TypeScript require writing a failing test first, implementing minimal code to pass, and refactoring while keeping the suite green. This discipline uses pytest and Vitest to verify failures correctly.

The best way to add regression tests for bugs across dual-runtime stacks is enforcing a regression-test-for-every-bug pattern. This ensures every bug fix includes a new test in Vitest or pytest before implementation.

Yes, this TDD workflow supports both Vitest and pytest for frontend and backend environments. It provides dual-runtime examples and bilingual test-fixture handling to standardize testing discipline across JavaScript, TypeScript, and Python.

Managing bilingual test fixtures across JS and Python involves structural guidance for cross-source integration. This standardizes testing discipline by providing dual-runtime examples that handle fixtures consistently across Vitest and pytest.

Yes, solo developers or small teams can adopt disciplined TDD with property-based testing patterns. The workflow consolidates best practices into a single repeatable process, ensuring one-assertion-per-test discipline across dual-runtime stacks.

You should verify that a test fails correctly before writing implementation code to ensure the test actually targets the intended logic. This iron-law TDD practice prevents false positives and maintains strict red-green-refactor discipline across your stack.