TypeScript Testing Code Guide

Test File Structure

One-to-one matching with the file under test. Test files should be located in the same directory as the target file.

File Naming

Format: {target-file-name}.spec.ts.

Example: user.service.ts → user.service.spec.ts

Test Framework

Use Jest. Maintain consistency within the project.

Test Hierarchy

Organize by method (function) unit as major sections, and by test case as minor sections. Complex methods can have intermediate sections by scenario.