🍬 Sweet Shop Management System (TDD Kata)

A full-stack Sweet Shop Management System built as part of a TDD Kata assessment. The project demonstrates backend API development, authentication, database usage, testing with TDD, frontend integration, and clean development practices, augmented responsibly with AI tools.

The Sweet Shop Management System allows users to:

• Register and log in securely
• View available sweets
• Search sweets by name, category, or price range
• Purchase sweets (with inventory tracking)

Admin users can:

• Add new sweets
• Update sweet details
• Restock sweets
• Delete sweets

The system is built with role-based access control, JWT authentication, and full test coverage for backend logic.

• Node.js
• NestJS
• TypeScript
• SQLite (TypeORM)
• JWT Authentication
• Jest (Testing)

• React (Vite)
• React Router
• Axios
• CSS (custom styling)

sweet-shop/
├── backend/
│   ├── screenshots/
│   ├── src/
│   ├── test/
│   ├── .env.example
│   ├── package.json
│   └── README.md
│
├── frontend/
│   ├── src/
│   ├── package.json
│   └── README.md
│
└── README.md

• JWT-based authentication

• Two roles:

  • USER
  • ADMIN

• Protected routes using Guards

• Admin-only access for sensitive operations (add, update, delete sweets)

• Tests written using Jest
• Service-level unit tests
• Followed Red → Green → Refactor
• All tests passing

cd backend
npm run test

📸 Test results screenshots are included in:

backend/screenshots/

• Registration & Login forms
• Sweet listing dashboard
• Search & filter sweets
• Purchase button (disabled when quantity = 0)
• Admin panel for managing sweets
• Responsive, clean UI

cd backend
npm install
npm run start

Backend runs on:

http://localhost:3000

Swagger UI:

http://localhost:3000/api

cd frontend
npm install
npm run dev

Frontend runs on:

http://localhost:5173

Screenshots of:

• User registration
• Login
• Sweet list
• Search functionality
• Admin actions
• Test results

📁 Stored in:

backend/screenshots/

• ChatGPT

• Generating initial boilerplate code
• Understanding NestJS dependency injection issues
• Writing and refining unit tests
• Debugging JWT authentication and test failures
• Structuring README and documentation

AI significantly improved productivity and debugging speed, especially while working with complex dependency injection and TDD workflows. All AI-generated code was reviewed, understood, and manually refined to ensure correctness and originality.

Alok Ranjan B.Tech – Electronics & Communication Engineering