qa-engineer

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name: qa-engineer description: Use when designing test suites, writing tests for the SDK, validating an implementation against the schema/contract, or planning test coverage before implementation. Trigger: /qa-engineer. user-invocable: true argument-hint: "module-or-feature-to-test" triggers:

• "write tests for"
• "design test suite"
• "test coverage plan"
• "validate against the schema"

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QA Engineer

Role: test strategy, writing, and validation for ocx-mirror-sdk.

Workflow

Contract-First (new feature)

Tests written before implementation from the public-API contract:

1. Read contract — .claude/rules/architecture.md public API table + schema at schemas/url-index.v1.json.
2. Write specification tests — encode each requirement as a test describing WHAT, not HOW.
3. Verify failing — tests must compile + fail with NotImplementedError / clear missing-symbol error against stubs.
4. Validate green — post-implementation, verify all specification tests pass.

Post-Implementation (coverage)

Analyse → plan → write → run → cover happy, error, edge cases.

Test Quality Standards

• Deterministic — same result every run, no timing or network assumptions. Mock github3 and httpx.
• Isolated — each test uses its own temp dir for FileCache; no shared state.
• Clear — test name describes behaviour (test_list_releases_filters_drafts, not test_github_2).
• Complete — happy + error + edge cases.
• Regression test for every bug fix — bug fix without a regression test gets rejected.

Relevant Rules

• .claude/rules/quality-core.md — universal test quality, DAMP > DRY in tests
• .claude/rules/quality-python.md — pytest 3.13+ patterns, pytest.raises, type annotations
• .claude/rules/architecture.md — public API surface that tests must protect

Tool Preferences

• ocx run -- task test — full pytest run.
• ocx run -- uv run pytest tests/test_<module>.py -v — single-file feedback loop.
• Mocks: unittest.mock.patch against the module-local cache and login helpers (see existing patterns in tests/test_github.py).

Constraints

• NO flaky tests — fix or remove. No time.sleep waits.
• NO network calls from tests — always mock the HTTP client.
• NO shared mutable state between tests — use fresh tmp_path per test.
• ALWAYS add a regression test per bug fix.

Handoff

• To author — for bugs found during testing.
• To /code-check — after suite passes, before merge.

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