單元測試

Walks through the sample workflow for unit tests.

Implement step definitions for Gherkin scenarios, translating Given/When/Then into executable test code. Use after write-scenario when scenarios are defined but step definitions are missing.

Quality assurance and testing protocols for statistical software

Build, test, and debug Lean 4 projects using Lake. Use when building the ComputationalPaths project, checking for errors, running tests, cleaning artifacts, or debugging Lean 4 compilation issues.

Generate comprehensive quizzes with 80-100 multiple choice questions (MCQ) from a topic title or reference file. Questions include difficulty levels (Easy/Medium/Hard) with answer key at the end. Use when creating study materials, practice tests, or assessments.

See what breaks BEFORE you edit. Type errors, affected callers, required tests.

Expert system for identifying deprecated patterns, suggesting refactoring to modern standards (Python 3.12+, ES2024+), checking test coverage, and leveraging AI-powered tools. Proactively applied when users request refactoring, updates, or analysis of legacy codebases.

Guides Rust backend test development with testcontainers, mockall, and axum-test. Use when writing integration tests, mocking dependencies, testing HTTP handlers, or setting up test infrastructure for Axum/SQLx projects.

Build production-ready Flutter apps for Android/iOS using feature-first architecture. Covers project setup, UI patterns, state management (Riverpod/BLoC), navigation (go_router), testing (TDD with mocktail), and deployment. Use when creating Flutter projects, implementing features, debugging Flutter issues, or making architectural decisions.

Project-specific test execution commands. Customize for your project.

This skill should be used when the user asks to "create a decorator", "write a decorator", "move logic into decorator", "clean logic out of the view", "isn't it decorator logic", "test a decorator", or mentions Draper, keeping views clean, or representation logic in decorators. Should also be used when editing *_decorator.rb files, working in app/decorators/ directory, questioning where formatting methods belong (models vs decorators vs views), or discussing methods like full_name, formatted_*, display_* that don't belong in models. Provides guidance on Draper gem best practices for Rails applications.

테스트 작성 및 실행 절차. Catch2 BDD 스타일 테스트.

Use this skill every user want to create test plan.

Use PROACTIVELY when creating new React projects requiring modern tooling and best practices. Provides three modes - sandbox (Vite + React for quick experiments), enterprise (Next.js with testing and CI/CD), and mobile (Expo + React Native). Enforces TypeScript strict mode, Testing Trophy approach, and 80% coverage. Not for non-React projects or modifying existing applications.

Use when code pattern tests fail - fixes recurring anti-patterns with documented root causes and verification

Expert in Lighthouse Journey Timeline backend architecture, service patterns, testing, and API development using Express.js, TypeScript, and Drizzle ORM. Use when implementing backend services, APIs, controllers, database queries, authentication, permissions, error handling, testing server code, or writing migrations.

Execute the RED phase of TDD by writing a failing test for the next unmarked item in PLAN.md. Writes tests with Korean descriptions and confirms test failure.

Handle MetaMask signature and transaction popups during Web3 DApp testing - approve signatures, send transactions, call contracts. Detects popup type and handles gas errors.

Run the relevant tests for the current change and summarize results. Use in Flow 3 (Build) and optionally in Flow 4 (Gate).

TDD for process documentation - test with subagents before writing, iterate until bulletproof