Mini Expense Tracker API

This project is a simple backend application built with Node.js and Express.js to manage daily expenses.
It supports basic CRUD operations, calculates total expenses, and includes white-box and black-box testing with automated CI/CD setup.

Features

• Add a new expense
• View all expenses
• Update an existing expense
• Delete an expense
• Calculate total expenses
• Unit testing with Mocha and Chai
• Black-box testing (Boundary Value Analysis and Equivalence Class Partitioning)
• GitHub Actions CI/CD setup for automated testing
• Deployed live using Render
• Postman collection created for API testing

Live Application

Mini Expense Tracker Live on Render

API Endpoints

Method	Endpoint	Description
GET	/	Welcome Message
POST	/add	Add a new expense
GET	/view	View all expenses
PUT	/update/:id	Update an expense by ID
DELETE	/delete/:id	Delete an expense by ID

Technologies Used

• Node.js
• Express.js
• Mocha (Unit Testing)
• Chai (Assertions)
• Postman (API Testing)
• Render (Deployment)
• GitHub Actions (CI/CD Automation)

Testing Details

• White-box testing (Mocha unit tests)
• Black-box testing:
  • Boundary Value Analysis (BVA)
  • Equivalence Class Partitioning (ECP)
• Postman used for API verification
• Automated test execution using GitHub Actions