doc-tdd

Purpose

Create a Test-Driven Development guide (TDD) — Layer 7 of the SDD flow. A TDD defines test cases validating the SPEC component contract: maps BDD scenarios to concrete tests (inputs, expected outputs, edge cases), sets per-type quality thresholds, declares Red → Green → Refactor order. Test type (unit / integration / functional / perf / security) is a type attribute on each case — no separate artifacts.

Layer: 7 (after SPEC, before IPLAN). Downstream: IPLAN → Code.

One TDD per SPEC component.

When to Use

Use doc-tdd when: