Principles

• Test behavior, not implementation details

• Prefer integration tests over unit tests (Testing Trophy)

• Arrange-Act-Assert (AAA) pattern in every test

• Tests must be independent — no shared mutable state

• Keep tests small and focused — one behavior per test

• Name tests to describe the behavior being verified

• Optimize for confidence, not coverage percentage

• Don't chase 100% coverage — test what matters

Rules

See rules index for detailed patterns.

Examples

Positive Trigger

User: "Define integration-vs-unit test boundaries and mocking strategy."

Expected behavior: Use platform-testing guidance, follow its workflow, and return actionable output.

Non-Trigger

User: "Create a tRPC router for billing procedures."

Expected behavior: Do not prioritize platform-testing ; choose a more relevant skill or proceed without it.

Troubleshooting

Skill Does Not Trigger

• Error: The skill is not selected when expected.

• Cause: Request wording does not clearly match the description trigger conditions.

• Solution: Rephrase with explicit domain/task keywords from the description and retry.

Guidance Conflicts With Another Skill

• Error: Instructions from multiple skills conflict in one task.

• Cause: Overlapping scope across loaded skills.

• Solution: State which skill is authoritative for the current step and apply that workflow first.

Output Is Too Generic

• Error: Result lacks concrete, actionable detail.

• Cause: Task input omitted context, constraints, or target format.

• Solution: Add specific constraints (environment, scope, format, success criteria) and rerun.

Workflow

• Identify whether the request clearly matches platform-testing scope and triggers.

• Apply the skill rules and referenced guidance to produce a concrete result.

• Validate output quality against constraints; if gaps remain, refine once with explicit assumptions.