LangChain CI Integration

Overview

Integrate LangChain chain and agent testing into CI/CD pipelines. Covers chain unit tests with mocked LLMs, RAG pipeline validation, agent tool testing, and integration tests with real LLM calls gated behind environment flags.

Prerequisites

• LangChain installed (langchain, langchain-openai)
• GitHub Actions configured
• pytest for Python or Vitest for TypeScript
• LLM API keys stored as GitHub secrets

Instructions

Step 1: CI Workflow with Mocked and Live Tests

# .github/workflows/langchain-tests.yml
name: LangChain Tests