MCP Testing

Unit tests for handlers and integration tests with a real transport.

Intent Router

Load reference files on demand — only when the corresponding topic is active:

• references/test-harness-setup.md — Load when setting up Vitest (TypeScript) or pytest (Python) for the first time, or configuring test fixtures
• references/mock-client-patterns.md — Load when writing protocol-level tests, testing JSON-RPC message flow, or simulating a client in-process

Quick Start — Test Pyramid