Unit Testing

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

Expert on Aptos blockchain, Move language, smart contracts, NFTs, DeFi, and Aptos development. Triggers on keywords aptos, move, blockchain, smart contract, nft, defi, web3, mainnet, testnet, devnet

Expert test automation engineer specializing in building robust test frameworks, CI/CD integration, and comprehensive test coverage. Masters multiple automation tools and frameworks with focus on maintainable, scalable, and efficient automated testing solutions.

Use when writing unit tests for Angular components, services, pipes, or directives. Triggers on requests to "write tests", "add tests", "create spec", "test this component", or when test files need to be created/modified.

Expert performance engineer specializing in system optimization, bottleneck identification, and scalability engineering. Masters performance testing, profiling, and tuning across applications, databases, and infrastructure with focus on achieving optimal response times and resource efficiency.

Systematic 9-dimension validation machine for testing ideas before building. Covers problem severity, market sizing, timing, competitive moats, unit economics, founder-market fit, technical feasibility, GTM clarity, and risk profile. Makes GO/NO-GO decisions based on evidence, not assumptions.

Use when building e2e tests with Playwright, under deadline pressure to ship incomplete coverage, or struggling with wait strategies and mock-vs-reality tradeoffs - provides patterns for edge case coverage, deterministic waits, and strategic mocking decisions

Expert chaos engineer specializing in controlled failure injection, resilience testing, and building antifragile systems. Masters chaos experiments, game day planning, and continuous resilience improvement with focus on learning from failure.

Expert accessibility tester specializing in WCAG compliance, inclusive design, and universal access. Masters screen reader compatibility, keyboard navigation, and assistive technology integration with focus on creating barrier-free digital experiences.

Expert Site Reliability Engineer balancing feature velocity with system stability through SLOs, automation, and operational excellence. Masters reliability engineering, chaos testing, and toil reduction with focus on building resilient, self-healing systems.

Production-grade frontend development with Next.js 16 App Router, TypeScript 5.9+ strict mode, Tailwind CSS v4, shadcn/ui, React 19.2 Server Components, state management (Zustand/Recoil), performance optimization (Turbopack stable, ISR/SSR/SSG), and accessibility best practices. Includes TanStack Query for server-state, Vitest for testing, and modern React patterns.

Use when building system provisioning manifests, handling multi-OS setups, managing package manager conflicts, or designing team provisioning workflows - provides patterns and safety procedures for declarative system configuration; emphasizes validation, dry-run testing, and staged rollout to prevent broken user setups

Expert risk manager specializing in comprehensive risk assessment, mitigation strategies, and compliance frameworks. Masters risk modeling, stress testing, and regulatory compliance with focus on protecting organizations from financial, operational, and strategic risks.

Test strategy, QA patterns, and automation practices across unit, integration, E2E, performance, BDD, and security testing with modern frameworks (Jest, Vitest, Playwright, k6, Cucumber).

Production-grade blockchain and Web3 development with Solidity (Ethereum/EVM), Rust (Solana), CosmWasm (Cosmos), including smart contract architecture, security patterns, gas optimization, testing strategies, DeFi protocols, and deployment workflows.

End-to-end web application testing with Playwright 1.57. Write and run browser automation tests from natural language, implement page object models, handle authentication, test responsive designs, and integrate with CI/CD pipelines. Includes Playwright Agents for AI-assisted test generation and Chrome for Testing builds.

Expert QA engineer specializing in comprehensive quality assurance, test strategy, and quality metrics. Masters manual and automated testing, test planning, and quality processes with focus on delivering high-quality software through systematic testing.

Guide Test-Driven Development using Kent Beck's Red-Green-Refactor cycle. Use when writing tests, implementing features via TDD, or following plan.md test instructions.

Run test coverage analysis, identify missed and partial lines, and write tests to improve coverage. Use this when the user asks to check coverage, improve coverage, or write tests for uncovered code. This skill detects both completely missed lines and partially covered lines (executed but missing branch coverage) to match Codecov analysis.

Complete guide to Next.js 16 features, breaking changes, and migration from v15. Use when building new Next.js projects or upgrading existing ones to leverage Turbopack, Cache Components, and latest performance optimizations.