dawiddutoit/custom-claude

Testing recipes for specific Textual TUI scenarios. Provides "how do I test X?" patterns for common testing needs. Use when: testing keyboard shortcuts, screen transitions, focus management, reactive attributes, custom messages/events, CSS styling effects, data tables, scrolling, input validation, error/loading states, or background workers. Each pattern shows the complete test with proper async handling and assertions.

Measure and track test coverage: coverage thresholds by layer, coverage reporting (HTML/terminal), identifying coverage gaps, branch coverage vs line coverage, coverage-driven testing. Includes layer-specific targets (domain 95%, application 85%, adapters 75%). Use when: Measuring test coverage, setting coverage thresholds, identifying untested code paths, tracking coverage improvements, ensuring code quality gates.

Design and manage Kafka message schemas with type safety and schema evolution. Use when defining event schemas, creating schema validators, managing versions, and generating type-safe Pydantic/msgspec models from schema definitions. Supports schema registry patterns and backward/forward compatibility.

Validates Home Assistant dashboard and configuration changes using a 3-tier approach: pre-publish validation (entity checks, config structure), post-publish verification (log analysis), and visual validation (browser console, rendering). Use when validating HA dashboards, checking dashboard configs, verifying entity IDs, debugging rendering issues, or before deploying dashboard changes. Triggers on "validate dashboard", "check HA config", "verify entities", "dashboard errors", or before publish operations. Works with Home Assistant WebSocket/REST APIs, Chrome extension MCP tools, and Python dashboard builders.

Run ruff linting and formatting with configuration details and common fixes. Use when checking code style, formatting files, fixing lint violations, or before commits. Explains ruff check vs ruff format, --fix flag, configuration in pyproject.toml, and common violation patterns. Works with Python .py files, targets Python 3.12.

Run dual type checking with pyright (fast, development) and mypy (thorough, CI/CD). Use when checking types, before commits, debugging type errors, or validating type annotations. Explains why both tools required, configuration differences, and when to use each. Works with Python .py files, pyproject.toml, strict mode enabled.