Expense Tracker – QA Automation

This repository contains a comprehensive QA automation framework for the Expense Tracker API, built with Django REST Framework (DRF).

It is designed to validate API correctness, UI stability, and end-to-end workflows, while demonstrating real-world QA engineering practices such as CI integration, test layering, and environment-based execution.

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Tech Stack

Test Automation

• Python – Core language for writing automated tests
• Pytest – Primary test framework for API and UI automation

🌐 API & Backend

• Django REST Framework (DRF) – Backend API under test
• RESTful APIs – Stateless service communication

API Testing Tools

• Postman – Manual and exploratory API testing
• Postman Collections – Reusable API request definitions

⚙️ CI / DevOps

• GitHub Actions – Continuous Integration for automated test execution
• YAML – CI workflow configuration

📦 Dependency Management

• pip – Python package manager
• requirements.txt – Dependency version control

🖥️ Environment

• Localhost (development) – Local execution and debugging
• Linux-based CI runners – GitHub-hosted runners for automation

API Endpoints

Action	Method	Endpoint
Generate API Key	POST	/api/signup
Login with API Key	POST	/api/login_securely
View API Settings	GET	/api/settings
Get Supported Currencies	GET	/api/get_currency
Add Expense Transaction	POST	/api/add_transaction
Get All Transactions	GET	/api/get_transaction
Get Account Balance	GET	/api/get_balance
Filter Transactions by Date	GET	/api/filter_by_date_transaction
Get API Version	GET	/api/version_control

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Example

GET https://api.nexapytechnologies.com/api/get_balance
API-KEY: your_api_key_here

📌 Note: Requests to these endpoints must include a valid API key in the header.

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🌍 Environments

Production

https://api.nexapytechnologies.com

Development

http://localhost:8000

⚠️ Localhost is strictly for development and testing. All real usage should point to the production API.

🚫 What Happens Without an API Key?

❌ Missing API key → 401 Unauthorized

❌ Invalid API key → 403 Forbidden

✅ Valid API key → 200 OK

API Automation (Pytest)

Covers critical backend workflows and edge cases, including:

• Authentication
  • API key generation
  • API key–based authorization
  • Invalid / missing key handling
• Expense Management
  • Create expense transactions
  • Retrieve transaction history
  • Validate account balance calculations
• Validation & Error Handling
  • Required field checks
  • Invalid payloads
  • Unauthorized access attempts
• Public Endpoints
  • Endpoint availability and response integrity

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UI Smoke Tests

Lightweight UI tests to ensure core user flows are not broken:

• Open Expense Tracker UI
• Generate API key via UI form
• Verify API key visibility and format
• Authenticate using generated API key
• Add a transaction
• Retrieve balance
• View transaction history

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📮 Postman Collection

Includes ready-to-run Postman requests for manual or exploratory testing:

• Authentication
• Add transaction
• Get transactions
• Get balance

File location:

postman/expense_tracker_api.postman_collection.json

Run API Tests

pytest -v

Ensure the application is running locally, then:

Open the UI at:

http://localhost:8000/ui/

API Usage Example

 GET /api/transactions/
X-API-KEY: your_api_key_here

Download Nexpenz APK

https://api.nexapytechnologies.com/download_nexpenz