Developer Guide Shows How to Test Microservices With Jest and Pytest Frameworks

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A technical tutorial published on DEV Community demonstrates how to write comprehensive API tests for a realistic three-service microservices architecture comprising user, product, and order services. The guide uses two testing frameworks — Jest with Supertest for Node.js unit testing and Pytest with HTTPX for Python-based integration and end-to-end testing. Each framework targets a different layer: Jest tests run without a live server by importing the app directly, while Pytest tests spin up real subprocesses to verify cross-service communication. The system uses JWT authentication shared across services, mirroring a common production pattern. All working code is available in a public GitHub repository at github.com/andre-carbajal/api-testing-microservices.

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ProgrammingDEV Community ·

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