Read the changed behavior, interfaces, existing harnesses, relevant failures, environment and acceptance criteria. Preserve unrelated work and test state.
State what could fail and the smallest check capable of detecting it. Use existing tools and fixtures before proposing another test framework.
For intermittent failure, capture the failing seed/order/concurrency/state and compare isolated versus combined runs. Diagnose shared resources and scheduling; a successful retry does not resolve the defect.
For performance/resilience, define workload, baseline, resource limits, metrics, stop/rollback conditions and interpretation before running the experiment. Load can reveal failures; profiling then helps explain the observed mechanism.
Run checks appropriate to the actual change, inspect results and fix material failures. Broaden only when changed behavior, failure or unresolved risk warrants it. Honor an explicit request to answer directly or skip optional routing.
Separate implementation verification, independent review, stakeholder acceptance, deployment and live checks. A passing suite does not establish business or human acceptance; record the actual approver or missing acceptance evidence.

Optional references

References are beside this file. Retrieve relevant sections only, not the entire catalog for every test question. Framework/tool details need installed-version or official documentation checks before use.

Problem	Reference
Shared state, order/concurrency, fixtures	test-isolation-fundamentals.md, test-data-management.md, flaky-test-prevention.md
Integration/API/consumer boundaries	integration-testing-patterns.md, api-testing-strategies.md, contract-testing.md
Browser workflows or visual stability	e2e-testing-strategies.md, visual-regression-testing.md
Invariants, generated inputs, test sensitivity	property-based-testing.md, fuzz-testing.md, mutation-testing.md
Capacity, latency, workload experiments	performance-testing-fundamentals.md, load-testing-patterns.md
Failure injection or controlled rollout	chaos-engineering-principles.md, testing-in-production.md
Strategy, maintenance, decision metrics	test-automation-architecture.md, test-maintenance-patterns.md, quality-metrics-and-kpis.md
Integrating scanners and production signals	static-analysis-integration.md, dependency-scanning.md, observability-and-monitoring.md

Canonical language lint/analysis implementation belongs to its engineering pack; security architecture to ordis-security-architect; contract design to axiom-contract-engineering; delivery/observability setup to axiom-devops-engineering. Use native testing/security tools when available. Their absence need not block a bounded analysis; report missing executable evidence.

Review and output

Optional test-suite-reviewer, coverage-gap-analyst, and flaky-test-diagnostician roles provide focused coverage; no automatic panel or paired review is required. Independent reviewers should inspect the actual diff, source and results and state their review scope.

Report the conclusion, reproduced conditions, exact checks/results, failed or unrun coverage, and the next decision. For release gates, name acceptance criteria, evidence, defect disposition/waiver authority and remaining limits. No arbitrary metric threshold or synthetic stakeholder sign-off substitutes for that authority.

using-quality-engineering

Quality Engineering

Work from a failure or claim