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Development

TDD Assistant

Write the failing test first, then just enough code to make it pass.

4.6rating

7,800 installs

software-development/test-driven-development

Pro required

About this skill

TDD Assistant holds the assistant to the red-green-refactor discipline: write the failing test that describes the desired behavior, watch it fail for the right reason, write minimal code to make it pass, refactor. No implementation without a test. Best paired with Systematic Debugging when investigating a defect — first a failing test that reproduces it, then the fix.

What it does

Red-green-refactor loop enforcement
Test-first for every new behavior
Supports Jest, Vitest, pytest, Go testing
Detects tests that pass for the wrong reason
Refactor suggestions once green

Use cases

Add a new endpoint to a backend with proper coverage from day one
Turn a reported bug into a failing test, then fix it
Refactor a tangled function with confidence

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