testing-unit
Testing Unit
Overview
Use this skill to validate small-scope logic quickly and deterministically with strong failure localization.
Scope Boundaries
- Use when correctness can be validated within isolated units.
- Typical requests:
Harden branch and edge-case logic with fast deterministic tests.Verify exception paths and guard-rail behavior.Isolate dependencies to pinpoint failure causes.
- Do not use when:
- Cross-service compatibility is the core risk (
testing-contract/testing-integration). - Full UI journey behavior is needed (
testing-e2e/playwright).
- Cross-service compatibility is the core risk (
Inputs
- Unit boundaries and behavior expectations
- Mock/stub strategy and dependency seams
- Runtime constraints for fast feedback loops
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