Unit Testing

This skill should be used when implementing features from Linear issues with full TDD workflow, automated planning, parallel code reviews (security and Rails best practices), systematic feedback implementation, and automated PR creation with Linear integration. Use when the user provides a Linear issue ID (e.g., "TRA-9", "DEV-123") and wants a complete implementation workflow from issue to PR.

Build and run iOS/macOS apps using xcodebuild and xcrun simctl directly. Use when building Xcode projects, running iOS simulators, managing devices, compiling Swift code, running UI tests, or automating iOS app interactions. Replaces XcodeBuildMCP with native CLI tools.

테스트 작성 원칙과 모범 사례를 제공합니다. 테스트 코드 작성, Mock 과다 진단, DI 구조 개선, 테스트 리뷰가 필요할 때 사용하세요. (project, gitignored)

Reclassify tests by adding @pytest.mark.functionality to tests not explicitly shown in the spec. Invoke with /reclassify-tests <problem> <checkpoint>.

This skill should be used when the user asks about "writing specs", "specs.md format", "how to write specifications", "sprint requirements", "testing configuration", "scope definition", or needs guidance on creating effective sprint specifications for agentic development.

Validate all checkpoints from an agent run directory in parallel. Spawns test-validator agents for each checkpoint and summarizes results. Invoke with /validate-run <run_path> [problem].

Use when creating test plans, reviewing test coverage, defining quality gates, writing E2E test scenarios, or validating acceptance criteria. Invoked for quality assurance, testing strategy, and verification activities.

Design, implement, and maintain high‑value TypeScript test suites using popular JS/TS testing libraries. Use this skill whenever the user is adding tests, debugging failing tests, or refactoring code that should be covered by tests.

Decision validation and thinking frameworks for startup founders. Use when you need to pressure-test a decision, validate your next steps, think through strategic options, or sanity-check your approach. Triggers on phrases like "should I", "help me think through", "is this the right move", "validate my thinking", "what am I missing". Covers fundraising, customer development, runway management, prioritization, and crypto/web3 founder challenges.

Continually test and repair solutions to benchmark problems until they pass. Use when a solution has failing tests. Invoke with /fix-solution <snapshot_path> <problem_name> <checkpoint_index>.

Expert senior en architecture backend pour accompagner le développement (conception, implémentation, review, refactoring). Architecture hexagonale, DDD, SOLID, clean code, tests. Utiliser pour concevoir de nouvelles features, développer du code, reviewer, refactorer, ou résoudre des problèmes architecturaux.

Post-creation workflow for new packages in dx-toolkit monorepo - implementation, testing, publishing

NautilusTrader algorithmic trading platform. Use for building trading strategies, backtesting, live trading, data handling, and quantitative finance applications.

Analyze checkpoint tests and suggest missing edge cases. Use after writing tests or when reviewing test coverage. Invoke with /edge-cases <problem> <checkpoint>.

Direct Maestro CLI tool for iOS/Android app testing. Write YAML flows and execute via maestro test—no Python overhead.

Performance testing and monitoring system for dx-toolkit packages - measurements, thresholds, regression handling

Python 3.13+ development specialist covering FastAPI, Django, async patterns, data science, testing with pytest, and modern Python features. Use when developing Python APIs, web applications, data pipelines, or writing tests.

This skill should be used when users need to create, modify, optimize, or troubleshoot GitHub Actions CI/CD workflows. Use when users ask about automating builds, tests, deployments, or any GitHub Actions-related tasks. Triggers include requests like "create a CI workflow", "deploy to AWS", "automate testing", "setup GitHub Actions", or when debugging workflow failures.

Testing conventions for pikru. Use when running tests to avoid timeouts. DO NOT run the full test suite.

This skill provides expert-level guidance for VS Code extension development. Use when implementing new extension features, debugging extension code, designing WebView UIs, implementing Language Server Protocol features, or optimizing extension performance. Covers activation events, contribution points, VS Code API patterns, security best practices, testing strategies, and publishing workflows.