Unit Testing

Browser automation with Selenium WebDriver for Python. (project)

Use for ANY bug, test failure, or unexpected behavior. Use BEFORE proposing fixes. Four phases: investigate, analyze, hypothesize, implement. Ensures understanding before attempting solutions.

Validate and test plugins before deployment

Playwright browser automation and E2E testing. Use for browser testing, screenshots, debugging, MCP tools, page objects, and visual verification.

TDD (Test-Driven Development) skill with Mockito for Spring Boot.Guides the Red-Green-Refactor cycle for writing tests first.

Review React 19 test quality including coverage, patterns, and React 19 API testing. Use when reviewing tests or test coverage.

Garantir que testes de integração usem MySQL 9.5 via Testcontainers com isolamento, migrations e secrets corretos.

Create Buck2 tests with local resources (processes, services, databases) using LocalResourceInfo and ExternalRunnerTestInfo. Use when tests need external dependencies like databases, HTTP servers, message queues, or Unix sockets that Buck2 should manage automatically. (project)

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

TDD London School (mockist) specialist for mock-driven, outside-in development. Use for behavior verification testing, contract-driven development, testing object collaborations, or when focusing on HOW objects interact rather than WHAT they contain.

Runs the full gdunit4 test suite in a headless Godot instance and parses the 'junit_report.xml' output into structured JSON pass/fail results.

Audits skills for discoverability and triggering effectiveness. Use when analyzing skill descriptions, checking trigger phrase coverage, validating progressive disclosure, reviewing SKILL.md structure, ensuring skill discoverability, testing skill triggering, improving skill descriptions, fixing skills that aren't being invoked, debugging discovery issues, or evaluating whether a skill will be invoked appropriately. Also triggers when user asks about skill best practices, wants to improve skill discoverability, or needs help with skill structure.

Establish or analyze brand identity guidelines. Creates comprehensive brand documentation that frontend-design, testing, and other skills automatically reference for consistent execution.

Write and generate code using memex-cli with Codex backend. Use when (1) Generating code files and scripts, (2) Refactoring existing code, (3) Writing tests, (4) Creating project scaffolds, (5) Implementing algorithms or features, (6) Code review and optimization, (7) Complex multi-file projects.

Comprehensive Pharo Smalltalk development workflow guide with AI-driven Tonel editing. Provides expertise in Tonel file format syntax (class definitions with name, superclass, instVars, category, method categories, class comment placement), package structure (package.st placement, directory organization, BaselineOf dependencies), development workflow (Edit → Import → Test cycle with absolute paths, re-import timing, test execution), and Pharo best practices (CRC format documentation, method categorization conventions). Use when working with Pharo Smalltalk projects, creating or editing Tonel .st files, organizing packages and dependencies, resolving import order issues, writing class comments, implementing standard Pharo development patterns, or troubleshooting Tonel syntax.

Use when creating new skills, editing existing skills, or verifying skills work before deployment - applies TDD to process documentation by testing with subagents before writing, iterating until bulletproof against rationalization

Simulate the ticket handler workflow step-by-step with real ticket system. Executes setup, implementation, testing, and finalization with explicit ENTER/EXIT stage declarations. Use this skill to debug, understand, or manually run the ticket handler workflow.

Use when testing Weavr integrations in sandbox - simulate deposits, card transactions, KYC/KYB verification, wire transfers, and 2FA challenges

Write Vitest tests with describe/test blocks, expect assertions, vi mocking, async testing, and parameterized tests. Use when creating or modifying test files.

Essential Deno TypeScript practices for ALL Deno development: configuration, imports, testing, permissions, and anti-patterns. Read this skill for any Deno project setup, dependency management, or core development work.