Unit Testing

Use when encountering bugs or test failures - systematic debugging using debuggers, internet research, and agents to find root cause before fixing

This skill guides configuring Litestream for continuous SQLite backup in Rails 8+ apps. Use when setting up production backups for SQLite databases (Solid Queue, Solid Cache, Solid Cable).

Generate realistic mock data for testing using factories, fixtures, and Faker.js. Use when seeding test databases, creating test fixtures, or mocking API responses.

Write and run API tests with Vitest for endpoints, middleware, and integrations. Use when testing API functionality, request/response validation, error handling.

Use proactively when encountering Rails errors, test failures, build issues, or unexpected behavior. Analyzes errors, reproduces issues, and identifies root causes.

Style guide templates for content creation. Used by /majestic:style-guide:new command.

Monitor and refactor large files into smaller, AI-friendly modules. Use when user asks to check file sizes, split large files, or organize the codebase. Ensures tests pass before and after refactoring.

Test implementation of thin router skill for DiPeO backend. Provides decision criteria and documentation anchors for FastAPI server, CLI (dipeo run/results/metrics/compile/export), SQLite schema, and MCP integration in apps/server/. Use when task mentions CLI commands, server endpoints, database queries, or MCP tools.

Use when creating new skills, editing existing skills, or verifying skills work - applies TDD to documentation by testing with subagents before writing

Worker that runs existing tests to catch regressions. Auto-detects framework, reports pass/fail. No status changes or task creation.

Guide for setting up local PyPI servers to host and serve Python packages. This skill should be used when tasks involve creating a local PyPI repository, serving Python packages over HTTP, building distributable Python packages, or testing pip installations from a custom index URL.

Guidance for creating polyglot files that are valid in both Python and C. This skill applies when tasked with writing code that must be parseable and executable by both the Python interpreter and C compiler. Covers polyglot syntax techniques, testing strategies, and critical cleanup requirements.

This skill guides writing comprehensive Minitest tests for Ruby and Rails applications. Use when creating test files, writing test cases, or testing new features. Covers both traditional and spec styles, fixtures, mocking, and Rails integration testing patterns.

Analyze test coverage, generate reports, and identify untested code. Use when improving test coverage, ensuring code quality, or preparing for production.

PRD templates and structure for product requirements documents. Used by /majestic:prd command.

Test klaude-code interactively using tmux with synchronous task completion. Use when testing UI features, verifying changes, or debugging interactive behavior. Eliminates polling/sleep by using KLAUDE_TEST_SIGNAL for precise synchronization.

This skill guides writing comprehensive RSpec tests for Ruby and Rails applications. Use when creating spec files, writing test cases, or testing new features. Covers RSpec syntax, describe/context organization, subject/let patterns, fixtures, mocking with allow/expect, and shoulda matchers.

Execute acceptance testing based on Gherkin scenarios.Use when: validating implementations, running acceptance tests, verifying features against acceptance criteria.Keywords: acceptance testing, Gherkin, validation, verify implementation, test execution, 驗收測試, 驗收, 驗證實作.

Run Vitest tests for a specific component with coverage. Use when making changes to React components to ensure tests pass and coverage is maintained.

Updates ALL task types (implementation/refactoring/test). Compares IDEAL plan vs existing tasks, categorizes KEEP/UPDATE/OBSOLETE/CREATE, applies changes in Linear and kanban.