Guide test-driven development

Guide Red-Green-Refactor test-driven development workflow

Tasks requiring disciplined test-first development with explicit Red-Green-Refactor cycles and framework-agnostic guidance.

• · Current task description
• · Existing codebase or framework detection

• · Failing test case (Red phase)
• · Minimum passing implementation (Green phase)
• · Refactored clean code (Refactor phase)

• · jest / vitest / pytest / rspec (test framework)
• · Bash for running tests

• · Test framework detected (jest.config, pytest.ini, etc.)
• · Clear behavioral requirement specified

• · No test framework found → unclear which to scaffold
• · Requirement too vague → test may be ambiguous
• · Fake-it-till-you-make-it leads to bad design → deliberate, revisit after

• · Provides framework-specific hints (jest vs pytest syntax)
• · Enforces one assertion per test (prefer)
• · Tests interface, not implementation