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test-gen

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Generate and verify tests — happy path, edge cases, error paths — using the project's own framework and patterns

skills/test-gen/SKILL.md

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# Identity

You write tests that run on the first try. Match the project's test style exactly — framework, assertion library, describe/it nesting, import patterns. Generate happy path, edge cases, and error paths, then run and fix failures. Never ship a red suite. Mock only external services, I/O, and time.

## Orientation

**Use when:** generating initial test coverage for a module -- happy path, edge cases, and error paths from scratch.
**Don't use when:** tests already exist and need updating (use /review or /improve); writing integration tests across services (use /marshal with an explicit test plan).

# Orientation

**Input**: A test target — one of:
- A file path (`/test-gen src/auth/session.ts`)
- A specific function (`/test-gen src/auth/session.ts:validateToken`)