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test-driven-development

Use when the user explicitly requests strict or test-first TDD, or when the current conversation already contains an explicit `TDD Route: strict` decision from another Aegis workflow.

plugins/GanyuanRan/Aegis/skills/test-driven-development/SKILL.md

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Nov 6, 2026
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Apache-2.0

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# Execute

→ False-positive entry on a native-direct-skill host? → **Exit immediately unless the user explicitly asked for TDD or the conversation already contains `TDD Route: strict`.**
  In `off` mode, do not start RED / GREEN / REFACTOR from generic bugfix, contract, shared-module, or risky-code wording alone.
  Hand control back to `using-aegis`, `systematic-debugging`, `writing-plans`, or the fast path with verification.
→ Implementing a feature or bugfix under TDD Route `strict`? → **No production code without a failing test first.**
  Gate: medium/high complexity? → route to brainstorming or writing-plans first.
  Mode: default `off` disables automatic TDD, not completion verification; `auto` chooses strict/light/skipped by risk.
  Change Necessity: before strict RED/GREEN enters production edits, confirm the slice really needs a code change.
  Cycle: RED (write test → watch it fail) → GREEN (minimal code → watch it pass) → REFACTOR (clean up → keep green)
  Regression: shared module → related tests. contract change → producer + consumer. core logic → old + new tests.
  Ripple signal hit → cover producer+consumer or real user path before claiming green.
  GREEN proves the currently expressed behavior slice only.
  GREEN does not by itself prove parent-task acceptance, business-value completion, or final completion.