typescript-testing-backend

What problem does it solve?

TypeScript backend testing often requires balancing unit tests with mocked Prisma and real database integration, coordinating test data, and keeping tests co-located with source code. This skill provides a structured approach to writing and reviewing Jest-based tests for services and controllers, plus integration tests against an isolated PostgreSQL instance.

Core Features & Use Cases

• Unit testing of services and controllers with mocked Prisma
• Integration testing against an isolated PostgreSQL database using Supertest patterns
• Co-located tests structure with shared test utilities and seed data guidance

Quick Start

Run Jest unit tests for services and controllers locally and validate integration tests against a real isolated PostgreSQL database.