Unit Testing

Test at extremes (1000x bigger/smaller, instant/year-long) to expose fundamental truths hidden at normal scales

Generate pytest test templates for UTXOracle modules following TDD patterns. Automatically creates RED phase tests with async fixtures, coverage markers, and integration test stubs.

Write E2E tests using Playwright with Cucumber/Gherkin for this project. Use when creating tests, writing test cases, testing UI flows, API testing, or when user mentions e2e, playwright, cucumber, gherkin, bdd, test automation, or QA.

Verify tests by following recorded trajectories in tests-in-verification.json. Use this skill during the verify stage to independently confirm test results by re-executing recorded steps.

Clean Architecture and Cosmic Python guidance for well-tested, layered Python systems. Use for designing Python projects with layered architecture (models, adapters, services, entrypoints), enforcing Clean Code and SOLID principles, testing strategies (unit tests, BDD, Gherkin), CI/CD setup (pytest, tox, importlinter), and architectural decision-making (ADRs). Applicable to systems requiring strict boundary enforcement, clean separation of concerns, and comprehensive test coverage.

Use PROACTIVELY when auditing code quality, running security scans, assessing technical debt, reviewing code for production readiness, setting up CI quality gates, or tracking DORA metrics. Analyzes codebases against OWASP Top 10, SOLID principles, Testing Trophy, and 2024-25 SDLC standards. Supports incremental audits for large codebases. Not for runtime profiling or real-time monitoring.

Diagnose and repair selftest failures by running diagnostic commands and proposing fixes

Test-first development strategy for PAI projects. USE WHEN user needs test strategy, coverage analysis, ATDD workflows, risk-based testing, or quality gates. Ensures tests are written before code, not after bugs appear.

Design production-grade Terraform modules for home lab infrastructure with HA patterns, proper structure, variable design, and Proxmox optimization. Use when creating new modules, implementing multi-master Kubernetes clusters, load balancers, or building reusable infrastructure components. Includes module structure, HA implementations, cost optimization, and testing patterns.

Enforces zero-tolerance test quality through two-phase testing strategy (Focus → Stable → Regression). Proactively activates when testing context detected. Blocks failures, enforces coverage thresholds (70% min, 85% actors, 80% business logic), and provides gamified feedback. Implements "testing is art in efficiency" - fast module feedback then comprehensive regression.

Reference and maintain consistency with the project's technical stack including frameworks, runtimes, languages, frontend libraries, databases, ORMs, testing tools, deployment platforms, and third-party services. Use this skill when making technology choices or selecting libraries that need to align with the existing stack, adding new dependencies to package.json, pnpm-workspace.yaml, requirements.txt, or other dependency management files, implementing features using the project's established frameworks, ORMs, databases, or APIs, writing code in the project's primary language and runtime environment, setting up testing infrastructure with the project's test frameworks, configuring CI/CD pipelines or deployment settings, integrating third-party services that match the project's existing integrations, ensuring compatibility with the project's build tools and bundlers, or ensuring any technical implementation decision aligns with the project's established technologies, architectural patterns, and conventions doc

테스트 실행 및 품질 검증. Use when:(1) 테스트 실행 요청, (2) 변경 후 검증 필요,(3) 커버리지 확인, (4) CI 전 로컬 검증.

인프라 계층(JpaEntity, Adapter, Repository) TDD 개발 지침. Red-Green-Refactor 사이클을 통해 테스트 주도 개발을 수행합니다. 실제 DB(Testcontainer)를 사용하며 Mocking하지 않습니다.

Comprehensive NestJS framework skill for building scalable server-side applications. Use for TypeScript backend development with controllers, providers, modules, dependency injection, middleware, guards, interceptors, pipes, database integration (MikroORM + MongoDB), GraphQL, microservices, testing, and API documentation. Also triggers when working with NestJS TypeScript files (.ts), NestJS module files, nest-cli.json, or NestJS project structure. Example triggers: "Create NestJS controller", "Set up dependency injection", "Add middleware", "Create GraphQL resolver", "Build microservice", "Write NestJS test", "Set up database module"

Write and update RSpec tests following BDD principles with behavior-first approach, characteristic-based context hierarchy, and happy path priority. **Activate when:** user mentions RSpec/specs/testing, works with *_spec.rb files, asks to write/add/update/fix tests, or requests test coverage. Ensures tests describe observable behavior, not implementation details.

Expert on testing Move smart contracts on Aptos, including unit tests, integration tests, Move Prover formal verification, debugging strategies, and test coverage. Triggers on keywords move test, unit test, integration test, move prover, formal verification, debug, coverage, assert, expect

Unit testing patterns with Vitest. Use when writing tests for TypeScript code.

Conventional Commits 1.0.0 に準拠した日本語コミットメッセージを作成します。タイプ（feat/fix/docs/style/refactor/perf/test/build/ci/chore）の選択、スコープの設定、破壊的変更の記載を行います。git commit を行う際、コミットメッセージの作成を依頼されたとき、変更内容を要約してコミットしたいときに使用してください。

Expert Python development focusing on clean code, comprehensive testing, performance optimization, and best practices with detailed documentation

Goのテストコードを生成する際に使用。テーブル駆動テスト、testify/assert使用、命名規則TestStructName_MethodNameを適用。Goのユニットテスト、統合テストを書く場合に使用。