Devlog 4 - Backend Testing Marathon 🧪

Spent few days building out integration tests for my Express + TypeScript backend.

Added test coverage for:

• User registration & login
• Refresh token flow
• Forgot/reset password
• Clients
• Products (including file uploads)
• Invoices & payments
• Workspace/business authorization

Also set up:

• MongoDB Memory Server for isolated test databases
• Factories for generating users, businesses, invoices, products, etc.
• Mocks for Cloudinary, Resend, and bcrypt

Ran into a pretty annoying EPIPE error while testing multipart file uploads. After a lot of debugging, I tracked it down to file stream handling in tests. Switching upload tests to use Buffers instead of fixture files made the suite stable again.

Current stats:

• 39 tests
• 15 test files
• Full integration test suite passing ✅