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🐛 LittleBugShop

A feature-rich e-commerce API backend designed as a testing sandbox for API automation, UI testing, and QA exploration. This project serves as a realistic yet controlled environment to practice testing strategies without the complexity of production systems.

🎯 Purpose

LittleBugShop serves as a private playground for:

  • API Testing Practice - Test REST endpoints, authentication flows, and complex business logic
  • Test Automation Development - Build and validate automation frameworks
  • QA Skill Building - Explore edge cases, failure scenarios, and validation strategies
  • UI Testing Integration - Backend ready for frontend test automation
  • Learning & Experimentation - Safe environment to break things and learn

The name "LittleBugShop" is a playful nod to its purpose: a shop full of intentional complexity where you can discover and practice finding bugs! 🐛

✨ Features

🛒 E-Commerce Core

  • Product browsing with advanced filtering (search, genre, author, price range)
  • Shopping cart management (add, update, remove items)
  • Real-time stock availability checking
  • Two-step checkout flow (order creation + payment processing)
  • Order history and status tracking
  • Comprehensive input validation with structured error responses

💳 Payment System

  • Multiple payment methods per user (Credit/Debit cards, PayPal)
  • Test card patterns for deterministic outcomes:
    • xxxx0000 → Success
    • xxxx1111 → Insufficient Funds
    • xxxx2222 → Timeout
    • xxxx3333 → Fraud Detection
    • xxxx4444 → Card Expired
    • xxxx5555 → Invalid CVV
    • xxxx6666 → Declined
  • Payment retry logic (cart preserved on failure)
  • Full/partial refund support
  • Transaction audit trail

👤 User Management

  • JWT authentication (cookie + Authorization header)
  • Role-based authorization (Admin/User)
  • User profiles with personal information
  • Multiple shipping/billing addresses
  • Default address management

⭐ Reviews & Social

  • Product reviews with 1-5 star ratings
  • Verified purchase badges
  • Review helpfulness voting (helpful/not helpful)
  • Admin moderation (hide/unhide reviews)
  • Review statistics (average rating, count)

💝 Wishlist

  • Add products to wishlist
  • Move wishlist items directly to cart
  • Track when items were added

🎟️ Coupon System

  • Percentage and fixed-amount discounts
  • Minimum purchase requirements
  • Usage limits (max uses per coupon)
  • Expiration dates
  • Admin usage reports

📦 Stock Management

  • Automatic stock reservation on order creation
  • Stock restoration on cancellation/refund
  • Low stock warnings
  • Admin stock control (set, increase, decrease)
  • Order expiration (15 minutes for pending orders)

🛡️ Error Handling

All endpoints return structured error responses:

{
"code": 401,
"message": "Authentication required. Please provide a valid JWT token."
}

Common error codes:

  • 400 - Bad Request (validation errors)
  • 401 - Unauthorized (missing/invalid token)
  • 403 - Forbidden (insufficient permissions)
  • 404 - Not Found (resource doesn't exist)

🏗️ Technology Stack

  • .NET 8.0 / ASP.NET Core Web API
  • In-Memory Database - No external dependencies, instant startup
  • JWT Bearer Authentication - Industry-standard auth
  • Swagger/OpenAPI - Interactive API documentation
  • C# 12 - Modern language features

🚀 Getting Started

Prerequisites

  • .NET 8.0 SDK or later

Run the Application

cd Farum.Dev
dotnet run

The API will start at http://localhost:5052

Access Swagger UI

Navigate to: http://localhost:5052/swagger

Test Users

The application comes pre-seeded with test data:

Admin User:

  • Username: admin
  • Password: admin123
  • Role: Admin (can manage products, stock, coupons)

Regular User:

  • Username: john_doe
  • Password: password123
  • Role: User (can shop, review, manage cart)

📚 API Documentation

Authentication

Register

POST /api/users/registerContent-Type: application/json
{
"username": "testuser",
"password": "password123",
"email": "test@example.com",
"firstName": "Test",
"lastName": "User"
}

Login

POST /api/users/loginContent-Type: application/json
{
"username": "admin",
"password": "admin123"
}

Response includes JWT token in both response body and HTTP-only cookie.

Products

Get All Products

GET /api/products?searchTerm=fiction&minPrice=10&maxPrice=50&sortBy=price&sortOrder=asc

Create Product (Admin Only)

POST /api/productsAuthorization: Bearer {token}Content-Type: application/json
{
"name": "Test Book",
"author": "John Doe",
"genre": "Fiction",
"isbn": "978-0134685991",
"price": 29.99,
"description": "A great book",
"stockQuantity": 100
}

Product Validation Rules:

  • Name: Required, 2-200 characters
  • Author: Required
  • Genre: Required
  • Description: Required
  • Price: Must be > 0 and ≤ 999,999.99
  • Stock: Cannot be negative
  • ISBN: Optional, must be 10 or 13 digits, must be unique

Update Stock (Admin Only)

PUT /api/products/{id}/stockAuthorization: Bearer {token}Content-Type: application/json
{
"quantity": 50
}

Shopping Cart

Get Cart

GET /api/cartAuthorization: Bearer {token}

Add to Cart

POST /api/cart/itemsAuthorization: Bearer {token}Content-Type: application/json
{
"productId": 1,
"quantity": 2
}

Orders & Payments

Create Order

POST /api/orders/createAuthorization: Bearer {token}Content-Type: application/json
{
"shippingAddressId": 1,
"billingAddressId": 1,
"couponCode": "SAVE10"
}

Process Payment

POST /api/payments/processAuthorization: Bearer {token}Content-Type: application/json
{
"orderId": 123,
"paymentMethodId": 1
}

🧪 Testing

HTTP Test Files

Pre-built test files are available in Farum.Dev/Tests/:

  • AuthTests.http - Registration and login
  • ProductManagement.http - Product CRUD with authorization tests
  • ShoppingCart.http - Cart operations
  • PlaceOrder.http - Two-step checkout flow
  • Payments.http - Payment scenarios with test cards
  • Reviews.http - Review creation and voting
  • Wishlist.http - Wishlist management
  • Coupons.http - Coupon application
  • StockManagement.http - Admin stock operations

Use VS Code REST Client extension to run these tests.

🔐 Security Features

  • JWT token authentication with configurable expiration
  • Role-based authorization (Admin/User)
  • Password validation (minimum 6 characters)
  • Protected admin-only endpoints
  • Structured error responses (no information leakage)

📝 Project Structure

LittleBugShop/
├── Farum.Dev/
│ ├── Controllers/ # API endpoints
│ ├── Models/ # Data models and DTOs
│ ├── Services/ # Business logic (JWT, Payment)
│ ├── Tests/ # HTTP test files
│ ├── Database.cs # In-memory database
│ └── Program.cs # App configuration
├── README.md
└── .gitignore

🎓 Learning Resources

This project demonstrates:

  • RESTful API Design - Proper HTTP methods, status codes, and resource naming
  • Authentication & Authorization - JWT implementation with role-based access
  • Input Validation - Comprehensive validation with meaningful error messages
  • Business Logic - Cart management, stock control, order processing
  • Error Handling - Structured error responses across all endpoints
  • Testing Patterns - Pre-built test scenarios for common flows

🤝 Contributing

This is a personal testing sandbox, but feel free to fork and customize for your own learning!

📄 License

This project is for educational purposes. Use freely for learning and testing.

🐛 Found a Bug?

That's the point! This is a testing playground. Document it, reproduce it, and practice your bug reporting skills!

Happy Testing! 🧪✨

About

🐛 E-commerce API testing sandbox with payment simulation, JWT auth, and realistic flows - built for QA practice and test automation

Resources

Readme
Activity

Stars

0 stars

Watchers

0 watching

Forks

0 forks
Report repository

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
BranchesTags
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🐛 LittleBugShop
A feature-rich e-commerce API backend designed as a testing sandbox for API automation, UI testing, and QA exploration. This project serves as a realistic yet controlled environment to practice testing strategies without the complexity of production systems.
🎯 Purpose
LittleBugShop serves as a private playground for:
  • API Testing Practice - Test REST endpoints, authentication flows, and complex business logic
  • Test Automation Development - Build and validate automation frameworks
  • QA Skill Building - Explore edge cases, failure scenarios, and validation strategies
  • UI Testing Integration - Backend ready for frontend test automation
  • Learning & Experimentation - Safe environment to break things and learn
The name "LittleBugShop" is a playful nod to its purpose: a shop full of intentional complexity where you can discover and practice finding bugs! 🐛
✨ Features
🛒 E-Commerce Core
  • Product browsing with advanced filtering (search, genre, author, price range)
  • Shopping cart management (add, update, remove items)
  • Real-time stock availability checking
  • Two-step checkout flow (order creation + payment processing)
  • Order history and status tracking
  • Comprehensive input validation with structured error responses
💳 Payment System
  • Multiple payment methods per user (Credit/Debit cards, PayPal)
  • Test card patterns for deterministic outcomes:

    • xxxx0000 → Success
    • xxxx1111 → Insufficient Funds
    • xxxx2222 → Timeout
    • xxxx3333 → Fraud Detection
    • xxxx4444 → Card Expired
    • xxxx5555 → Invalid CVV
    • xxxx6666 → Declined
  • Payment retry logic (cart preserved on failure)
  • Full/partial refund support
  • Transaction audit trail
👤 User Management
  • JWT authentication (cookie + Authorization header)
  • Role-based authorization (Admin/User)
  • User profiles with personal information
  • Multiple shipping/billing addresses
  • Default address management
⭐ Reviews & Social
  • Product reviews with 1-5 star ratings
  • Verified purchase badges
  • Review helpfulness voting (helpful/not helpful)
  • Admin moderation (hide/unhide reviews)
  • Review statistics (average rating, count)
💝 Wishlist
  • Add products to wishlist
  • Move wishlist items directly to cart
  • Track when items were added
🎟️ Coupon System
  • Percentage and fixed-amount discounts
  • Minimum purchase requirements
  • Usage limits (max uses per coupon)
  • Expiration dates
  • Admin usage reports
📦 Stock Management
  • Automatic stock reservation on order creation
  • Stock restoration on cancellation/refund
  • Low stock warnings
  • Admin stock control (set, increase, decrease)
  • Order expiration (15 minutes for pending orders)
🛡️ Error Handling
All endpoints return structured error responses:
{
"code": 401,
"message": "Authentication required. Please provide a valid JWT token."
}
Common error codes:
  • 400 - Bad Request (validation errors)
  • 401 - Unauthorized (missing/invalid token)
  • 403 - Forbidden (insufficient permissions)
  • 404 - Not Found (resource doesn't exist)
🏗️ Technology Stack
  • .NET 8.0 / ASP.NET Core Web API
  • In-Memory Database - No external dependencies, instant startup
  • JWT Bearer Authentication - Industry-standard auth
  • Swagger/OpenAPI - Interactive API documentation
  • C# 12 - Modern language features
🚀 Getting Started
Prerequisites
  • .NET 8.0 SDK or later
Run the Application
cd Farum.Dev
dotnet run
The API will start at http://localhost:5052
Access Swagger UI
Navigate to: http://localhost:5052/swagger
Test Users
The application comes pre-seeded with test data:
Admin User:
  • Username: admin
  • Password: admin123
  • Role: Admin (can manage products, stock, coupons)
Regular User:
  • Username: john_doe
  • Password: password123
  • Role: User (can shop, review, manage cart)
📚 API Documentation
Authentication
Register
POST /api/users/registerContent-Type: application/json
{
"username": "testuser",
"password": "password123",
"email": "test@example.com",
"firstName": "Test",
"lastName": "User"
}
Login
POST /api/users/loginContent-Type: application/json
{
"username": "admin",
"password": "admin123"
}
Response includes JWT token in both response body and HTTP-only cookie.
Products
Get All Products
GET /api/products?searchTerm=fiction&minPrice=10&maxPrice=50&sortBy=price&sortOrder=asc
Create Product (Admin Only)
POST /api/productsAuthorization: Bearer {token}Content-Type: application/json
{
"name": "Test Book",
"author": "John Doe",
"genre": "Fiction",
"isbn": "978-0134685991",
"price": 29.99,
"description": "A great book",
"stockQuantity": 100
}
Product Validation Rules:
  • Name: Required, 2-200 characters
  • Author: Required
  • Genre: Required
  • Description: Required
  • Price: Must be > 0 and ≤ 999,999.99
  • Stock: Cannot be negative
  • ISBN: Optional, must be 10 or 13 digits, must be unique
Update Stock (Admin Only)
PUT /api/products/{id}/stockAuthorization: Bearer {token}Content-Type: application/json
{
"quantity": 50
}
Shopping Cart
Get Cart
GET /api/cartAuthorization: Bearer {token}
Add to Cart
POST /api/cart/itemsAuthorization: Bearer {token}Content-Type: application/json
{
"productId": 1,
"quantity": 2
}
Orders & Payments
Create Order
POST /api/orders/createAuthorization: Bearer {token}Content-Type: application/json
{
"shippingAddressId": 1,
"billingAddressId": 1,
"couponCode": "SAVE10"
}
Process Payment
POST /api/payments/processAuthorization: Bearer {token}Content-Type: application/json
{
"orderId": 123,
"paymentMethodId": 1
}
🧪 Testing
HTTP Test Files
Pre-built test files are available in Farum.Dev/Tests/:
  • AuthTests.http - Registration and login
  • ProductManagement.http - Product CRUD with authorization tests
  • ShoppingCart.http - Cart operations
  • PlaceOrder.http - Two-step checkout flow
  • Payments.http - Payment scenarios with test cards
  • Reviews.http - Review creation and voting
  • Wishlist.http - Wishlist management
  • Coupons.http - Coupon application
  • StockManagement.http - Admin stock operations
Use VS Code REST Client extension to run these tests.
🔐 Security Features
  • JWT token authentication with configurable expiration
  • Role-based authorization (Admin/User)
  • Password validation (minimum 6 characters)
  • Protected admin-only endpoints
  • Structured error responses (no information leakage)
📝 Project Structure
LittleBugShop/
├── Farum.Dev/
│ ├── Controllers/ # API endpoints
│ ├── Models/ # Data models and DTOs
│ ├── Services/ # Business logic (JWT, Payment)
│ ├── Tests/ # HTTP test files
│ ├── Database.cs # In-memory database
│ └── Program.cs # App configuration
├── README.md
└── .gitignore

🎓 Learning Resources
This project demonstrates:
  • RESTful API Design - Proper HTTP methods, status codes, and resource naming
  • Authentication & Authorization - JWT implementation with role-based access
  • Input Validation - Comprehensive validation with meaningful error messages
  • Business Logic - Cart management, stock control, order processing
  • Error Handling - Structured error responses across all endpoints
  • Testing Patterns - Pre-built test scenarios for common flows
🤝 Contributing
This is a personal testing sandbox, but feel free to fork and customize for your own learning!
📄 License
This project is for educational purposes. Use freely for learning and testing.
🐛 Found a Bug?
That's the point! This is a testing playground. Document it, reproduce it, and practice your bug reporting skills!
Happy Testing! 🧪✨
About
🐛 E-commerce API testing sandbox with payment simulation, JWT auth, and realistic flows - built for QA practice and test automation
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
🐛 LittleBugShop
A feature-rich e-commerce API backend designed as a testing sandbox for API automation, UI testing, and QA exploration. This project serves as a realistic yet controlled environment to practice testing strategies without the complexity of production systems.
🎯 Purpose
LittleBugShop serves as a private playground for:
  • API Testing Practice - Test REST endpoints, authentication flows, and complex business logic
  • Test Automation Development - Build and validate automation frameworks
  • QA Skill Building - Explore edge cases, failure scenarios, and validation strategies
  • UI Testing Integration - Backend ready for frontend test automation
  • Learning & Experimentation - Safe environment to break things and learn
The name "LittleBugShop" is a playful nod to its purpose: a shop full of intentional complexity where you can discover and practice finding bugs! 🐛
✨ Features
🛒 E-Commerce Core
  • Product browsing with advanced filtering (search, genre, author, price range)
  • Shopping cart management (add, update, remove items)
  • Real-time stock availability checking
  • Two-step checkout flow (order creation + payment processing)
  • Order history and status tracking
  • Comprehensive input validation with structured error responses
💳 Payment System
  • Multiple payment methods per user (Credit/Debit cards, PayPal)
  • Test card patterns for deterministic outcomes:

    • xxxx0000 → Success
    • xxxx1111 → Insufficient Funds
    • xxxx2222 → Timeout
    • xxxx3333 → Fraud Detection
    • xxxx4444 → Card Expired
    • xxxx5555 → Invalid CVV
    • xxxx6666 → Declined
  • Payment retry logic (cart preserved on failure)
  • Full/partial refund support
  • Transaction audit trail
👤 User Management
  • JWT authentication (cookie + Authorization header)
  • Role-based authorization (Admin/User)
  • User profiles with personal information
  • Multiple shipping/billing addresses
  • Default address management
⭐ Reviews & Social
  • Product reviews with 1-5 star ratings
  • Verified purchase badges
  • Review helpfulness voting (helpful/not helpful)
  • Admin moderation (hide/unhide reviews)
  • Review statistics (average rating, count)
💝 Wishlist
  • Add products to wishlist
  • Move wishlist items directly to cart
  • Track when items were added
🎟️ Coupon System
  • Percentage and fixed-amount discounts
  • Minimum purchase requirements
  • Usage limits (max uses per coupon)
  • Expiration dates
  • Admin usage reports
📦 Stock Management
  • Automatic stock reservation on order creation
  • Stock restoration on cancellation/refund
  • Low stock warnings
  • Admin stock control (set, increase, decrease)
  • Order expiration (15 minutes for pending orders)
🛡️ Error Handling
All endpoints return structured error responses:
{
"code": 401,
"message": "Authentication required. Please provide a valid JWT token."
}
Common error codes:
  • 400 - Bad Request (validation errors)
  • 401 - Unauthorized (missing/invalid token)
  • 403 - Forbidden (insufficient permissions)
  • 404 - Not Found (resource doesn't exist)
🏗️ Technology Stack
  • .NET 8.0 / ASP.NET Core Web API
  • In-Memory Database - No external dependencies, instant startup
  • JWT Bearer Authentication - Industry-standard auth
  • Swagger/OpenAPI - Interactive API documentation
  • C# 12 - Modern language features
🚀 Getting Started
Prerequisites
  • .NET 8.0 SDK or later
Run the Application
cd Farum.Dev
dotnet run
The API will start at http://localhost:5052
Access Swagger UI
Navigate to: http://localhost:5052/swagger
Test Users
The application comes pre-seeded with test data:
Admin User:
  • Username: admin
  • Password: admin123
  • Role: Admin (can manage products, stock, coupons)
Regular User:
  • Username: john_doe
  • Password: password123
  • Role: User (can shop, review, manage cart)
📚 API Documentation
Authentication
Register
POST /api/users/registerContent-Type: application/json
{
"username": "testuser",
"password": "password123",
"email": "test@example.com",
"firstName": "Test",
"lastName": "User"
}
Login
POST /api/users/loginContent-Type: application/json
{
"username": "admin",
"password": "admin123"
}
Response includes JWT token in both response body and HTTP-only cookie.
Products
Get All Products
GET /api/products?searchTerm=fiction&minPrice=10&maxPrice=50&sortBy=price&sortOrder=asc
Create Product (Admin Only)
POST /api/productsAuthorization: Bearer {token}Content-Type: application/json
{
"name": "Test Book",
"author": "John Doe",
"genre": "Fiction",
"isbn": "978-0134685991",
"price": 29.99,
"description": "A great book",
"stockQuantity": 100
}
Product Validation Rules:
  • Name: Required, 2-200 characters
  • Author: Required
  • Genre: Required
  • Description: Required
  • Price: Must be > 0 and ≤ 999,999.99
  • Stock: Cannot be negative
  • ISBN: Optional, must be 10 or 13 digits, must be unique
Update Stock (Admin Only)
PUT /api/products/{id}/stockAuthorization: Bearer {token}Content-Type: application/json
{
"quantity": 50
}
Shopping Cart
Get Cart
GET /api/cartAuthorization: Bearer {token}
Add to Cart
POST /api/cart/itemsAuthorization: Bearer {token}Content-Type: application/json
{
"productId": 1,
"quantity": 2
}
Orders & Payments
Create Order
POST /api/orders/createAuthorization: Bearer {token}Content-Type: application/json
{
"shippingAddressId": 1,
"billingAddressId": 1,
"couponCode": "SAVE10"
}
Process Payment
POST /api/payments/processAuthorization: Bearer {token}Content-Type: application/json
{
"orderId": 123,
"paymentMethodId": 1
}
🧪 Testing
HTTP Test Files
Pre-built test files are available in Farum.Dev/Tests/:
  • AuthTests.http - Registration and login
  • ProductManagement.http - Product CRUD with authorization tests
  • ShoppingCart.http - Cart operations
  • PlaceOrder.http - Two-step checkout flow
  • Payments.http - Payment scenarios with test cards
  • Reviews.http - Review creation and voting
  • Wishlist.http - Wishlist management
  • Coupons.http - Coupon application
  • StockManagement.http - Admin stock operations
Use VS Code REST Client extension to run these tests.
🔐 Security Features
  • JWT token authentication with configurable expiration
  • Role-based authorization (Admin/User)
  • Password validation (minimum 6 characters)
  • Protected admin-only endpoints
  • Structured error responses (no information leakage)
📝 Project Structure
LittleBugShop/
├── Farum.Dev/
│ ├── Controllers/ # API endpoints
│ ├── Models/ # Data models and DTOs
│ ├── Services/ # Business logic (JWT, Payment)
│ ├── Tests/ # HTTP test files
│ ├── Database.cs # In-memory database
│ └── Program.cs # App configuration
├── README.md
└── .gitignore

🎓 Learning Resources
This project demonstrates:
  • RESTful API Design - Proper HTTP methods, status codes, and resource naming
  • Authentication & Authorization - JWT implementation with role-based access
  • Input Validation - Comprehensive validation with meaningful error messages
  • Business Logic - Cart management, stock control, order processing
  • Error Handling - Structured error responses across all endpoints
  • Testing Patterns - Pre-built test scenarios for common flows
🤝 Contributing
This is a personal testing sandbox, but feel free to fork and customize for your own learning!
📄 License
This project is for educational purposes. Use freely for learning and testing.
🐛 Found a Bug?
That's the point! This is a testing playground. Document it, reproduce it, and practice your bug reporting skills!
Happy Testing! 🧪✨
About
🐛 E-commerce API testing sandbox with payment simulation, JWT auth, and realistic flows - built for QA practice and test automation
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
🐛 LittleBugShop
A feature-rich e-commerce API backend designed as a testing sandbox for API automation, UI testing, and QA exploration. This project serves as a realistic yet controlled environment to practice testing strategies without the complexity of production systems.
🎯 Purpose
LittleBugShop serves as a private playground for:
  • API Testing Practice - Test REST endpoints, authentication flows, and complex business logic
  • Test Automation Development - Build and validate automation frameworks
  • QA Skill Building - Explore edge cases, failure scenarios, and validation strategies
  • UI Testing Integration - Backend ready for frontend test automation
  • Learning & Experimentation - Safe environment to break things and learn
The name "LittleBugShop" is a playful nod to its purpose: a shop full of intentional complexity where you can discover and practice finding bugs! 🐛
✨ Features
🛒 E-Commerce Core
  • Product browsing with advanced filtering (search, genre, author, price range)
  • Shopping cart management (add, update, remove items)
  • Real-time stock availability checking
  • Two-step checkout flow (order creation + payment processing)
  • Order history and status tracking
  • Comprehensive input validation with structured error responses
💳 Payment System
  • Multiple payment methods per user (Credit/Debit cards, PayPal)
  • Test card patterns for deterministic outcomes:

    • xxxx0000 → Success
    • xxxx1111 → Insufficient Funds
    • xxxx2222 → Timeout
    • xxxx3333 → Fraud Detection
    • xxxx4444 → Card Expired
    • xxxx5555 → Invalid CVV
    • xxxx6666 → Declined
  • Payment retry logic (cart preserved on failure)
  • Full/partial refund support
  • Transaction audit trail
👤 User Management
  • JWT authentication (cookie + Authorization header)
  • Role-based authorization (Admin/User)
  • User profiles with personal information
  • Multiple shipping/billing addresses
  • Default address management
⭐ Reviews & Social
  • Product reviews with 1-5 star ratings
  • Verified purchase badges
  • Review helpfulness voting (helpful/not helpful)
  • Admin moderation (hide/unhide reviews)
  • Review statistics (average rating, count)
💝 Wishlist
  • Add products to wishlist
  • Move wishlist items directly to cart
  • Track when items were added
🎟️ Coupon System
  • Percentage and fixed-amount discounts
  • Minimum purchase requirements
  • Usage limits (max uses per coupon)
  • Expiration dates
  • Admin usage reports
📦 Stock Management
  • Automatic stock reservation on order creation
  • Stock restoration on cancellation/refund
  • Low stock warnings
  • Admin stock control (set, increase, decrease)
  • Order expiration (15 minutes for pending orders)
🛡️ Error Handling
All endpoints return structured error responses:
{
"code": 401,
"message": "Authentication required. Please provide a valid JWT token."
}
Common error codes:
  • 400 - Bad Request (validation errors)
  • 401 - Unauthorized (missing/invalid token)
  • 403 - Forbidden (insufficient permissions)
  • 404 - Not Found (resource doesn't exist)
🏗️ Technology Stack
  • .NET 8.0 / ASP.NET Core Web API
  • In-Memory Database - No external dependencies, instant startup
  • JWT Bearer Authentication - Industry-standard auth
  • Swagger/OpenAPI - Interactive API documentation
  • C# 12 - Modern language features
🚀 Getting Started
Prerequisites
  • .NET 8.0 SDK or later
Run the Application
cd Farum.Dev
dotnet run
The API will start at http://localhost:5052
Access Swagger UI
Navigate to: http://localhost:5052/swagger
Test Users
The application comes pre-seeded with test data:
Admin User:
  • Username: admin
  • Password: admin123
  • Role: Admin (can manage products, stock, coupons)
Regular User:
  • Username: john_doe
  • Password: password123
  • Role: User (can shop, review, manage cart)
📚 API Documentation
Authentication
Register
POST /api/users/registerContent-Type: application/json
{
"username": "testuser",
"password": "password123",
"email": "test@example.com",
"firstName": "Test",
"lastName": "User"
}
Login
POST /api/users/loginContent-Type: application/json
{
"username": "admin",
"password": "admin123"
}
Response includes JWT token in both response body and HTTP-only cookie.
Products
Get All Products
GET /api/products?searchTerm=fiction&minPrice=10&maxPrice=50&sortBy=price&sortOrder=asc
Create Product (Admin Only)
POST /api/productsAuthorization: Bearer {token}Content-Type: application/json
{
"name": "Test Book",
"author": "John Doe",
"genre": "Fiction",
"isbn": "978-0134685991",
"price": 29.99,
"description": "A great book",
"stockQuantity": 100
}
Product Validation Rules:
  • Name: Required, 2-200 characters
  • Author: Required
  • Genre: Required
  • Description: Required
  • Price: Must be > 0 and ≤ 999,999.99
  • Stock: Cannot be negative
  • ISBN: Optional, must be 10 or 13 digits, must be unique
Update Stock (Admin Only)
PUT /api/products/{id}/stockAuthorization: Bearer {token}Content-Type: application/json
{
"quantity": 50
}
Shopping Cart
Get Cart
GET /api/cartAuthorization: Bearer {token}
Add to Cart
POST /api/cart/itemsAuthorization: Bearer {token}Content-Type: application/json
{
"productId": 1,
"quantity": 2
}
Orders & Payments
Create Order
POST /api/orders/createAuthorization: Bearer {token}Content-Type: application/json
{
"shippingAddressId": 1,
"billingAddressId": 1,
"couponCode": "SAVE10"
}
Process Payment
POST /api/payments/processAuthorization: Bearer {token}Content-Type: application/json
{
"orderId": 123,
"paymentMethodId": 1
}
🧪 Testing
HTTP Test Files
Pre-built test files are available in Farum.Dev/Tests/:
  • AuthTests.http - Registration and login
  • ProductManagement.http - Product CRUD with authorization tests
  • ShoppingCart.http - Cart operations
  • PlaceOrder.http - Two-step checkout flow
  • Payments.http - Payment scenarios with test cards
  • Reviews.http - Review creation and voting
  • Wishlist.http - Wishlist management
  • Coupons.http - Coupon application
  • StockManagement.http - Admin stock operations
Use VS Code REST Client extension to run these tests.
🔐 Security Features
  • JWT token authentication with configurable expiration
  • Role-based authorization (Admin/User)
  • Password validation (minimum 6 characters)
  • Protected admin-only endpoints
  • Structured error responses (no information leakage)
📝 Project Structure
LittleBugShop/
├── Farum.Dev/
│ ├── Controllers/ # API endpoints
│ ├── Models/ # Data models and DTOs
│ ├── Services/ # Business logic (JWT, Payment)
│ ├── Tests/ # HTTP test files
│ ├── Database.cs # In-memory database
│ └── Program.cs # App configuration
├── README.md
└── .gitignore

🎓 Learning Resources
This project demonstrates:
  • RESTful API Design - Proper HTTP methods, status codes, and resource naming
  • Authentication & Authorization - JWT implementation with role-based access
  • Input Validation - Comprehensive validation with meaningful error messages
  • Business Logic - Cart management, stock control, order processing
  • Error Handling - Structured error responses across all endpoints
  • Testing Patterns - Pre-built test scenarios for common flows
🤝 Contributing
This is a personal testing sandbox, but feel free to fork and customize for your own learning!
📄 License
This project is for educational purposes. Use freely for learning and testing.
🐛 Found a Bug?
That's the point! This is a testing playground. Document it, reproduce it, and practice your bug reporting skills!
Happy Testing! 🧪✨
About
🐛 E-commerce API testing sandbox with payment simulation, JWT auth, and realistic flows - built for QA practice and test automation
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
🐛 LittleBugShop
A feature-rich e-commerce API backend designed as a testing sandbox for API automation, UI testing, and QA exploration. This project serves as a realistic yet controlled environment to practice testing strategies without the complexity of production systems.
🎯 Purpose
LittleBugShop serves as a private playground for:
  • API Testing Practice - Test REST endpoints, authentication flows, and complex business logic
  • Test Automation Development - Build and validate automation frameworks
  • QA Skill Building - Explore edge cases, failure scenarios, and validation strategies
  • UI Testing Integration - Backend ready for frontend test automation
  • Learning & Experimentation - Safe environment to break things and learn
The name "LittleBugShop" is a playful nod to its purpose: a shop full of intentional complexity where you can discover and practice finding bugs! 🐛
✨ Features
🛒 E-Commerce Core
  • Product browsing with advanced filtering (search, genre, author, price range)
  • Shopping cart management (add, update, remove items)
  • Real-time stock availability checking
  • Two-step checkout flow (order creation + payment processing)
  • Order history and status tracking
  • Comprehensive input validation with structured error responses
💳 Payment System
  • Multiple payment methods per user (Credit/Debit cards, PayPal)
  • Test card patterns for deterministic outcomes:

    • xxxx0000 → Success
    • xxxx1111 → Insufficient Funds
    • xxxx2222 → Timeout
    • xxxx3333 → Fraud Detection
    • xxxx4444 → Card Expired
    • xxxx5555 → Invalid CVV
    • xxxx6666 → Declined
  • Payment retry logic (cart preserved on failure)
  • Full/partial refund support
  • Transaction audit trail
👤 User Management
  • JWT authentication (cookie + Authorization header)
  • Role-based authorization (Admin/User)
  • User profiles with personal information
  • Multiple shipping/billing addresses
  • Default address management
⭐ Reviews & Social
  • Product reviews with 1-5 star ratings
  • Verified purchase badges
  • Review helpfulness voting (helpful/not helpful)
  • Admin moderation (hide/unhide reviews)
  • Review statistics (average rating, count)
💝 Wishlist
  • Add products to wishlist
  • Move wishlist items directly to cart
  • Track when items were added
🎟️ Coupon System
  • Percentage and fixed-amount discounts
  • Minimum purchase requirements
  • Usage limits (max uses per coupon)
  • Expiration dates
  • Admin usage reports
📦 Stock Management
  • Automatic stock reservation on order creation
  • Stock restoration on cancellation/refund
  • Low stock warnings
  • Admin stock control (set, increase, decrease)
  • Order expiration (15 minutes for pending orders)
🛡️ Error Handling
All endpoints return structured error responses:
{
"code": 401,
"message": "Authentication required. Please provide a valid JWT token."
}
Common error codes:
  • 400 - Bad Request (validation errors)
  • 401 - Unauthorized (missing/invalid token)
  • 403 - Forbidden (insufficient permissions)
  • 404 - Not Found (resource doesn't exist)
🏗️ Technology Stack
  • .NET 8.0 / ASP.NET Core Web API
  • In-Memory Database - No external dependencies, instant startup
  • JWT Bearer Authentication - Industry-standard auth
  • Swagger/OpenAPI - Interactive API documentation
  • C# 12 - Modern language features
🚀 Getting Started
Prerequisites
  • .NET 8.0 SDK or later
Run the Application
cd Farum.Dev
dotnet run
The API will start at http://localhost:5052
Access Swagger UI
Navigate to: http://localhost:5052/swagger
Test Users
The application comes pre-seeded with test data:
Admin User:
  • Username: admin
  • Password: admin123
  • Role: Admin (can manage products, stock, coupons)
Regular User:
  • Username: john_doe
  • Password: password123
  • Role: User (can shop, review, manage cart)
📚 API Documentation
Authentication
Register
POST /api/users/registerContent-Type: application/json
{
"username": "testuser",
"password": "password123",
"email": "test@example.com",
"firstName": "Test",
"lastName": "User"
}
Login
POST /api/users/loginContent-Type: application/json
{
"username": "admin",
"password": "admin123"
}
Response includes JWT token in both response body and HTTP-only cookie.
Products
Get All Products
GET /api/products?searchTerm=fiction&minPrice=10&maxPrice=50&sortBy=price&sortOrder=asc
Create Product (Admin Only)
POST /api/productsAuthorization: Bearer {token}Content-Type: application/json
{
"name": "Test Book",
"author": "John Doe",
"genre": "Fiction",
"isbn": "978-0134685991",
"price": 29.99,
"description": "A great book",
"stockQuantity": 100
}
Product Validation Rules:
  • Name: Required, 2-200 characters
  • Author: Required
  • Genre: Required
  • Description: Required
  • Price: Must be > 0 and ≤ 999,999.99
  • Stock: Cannot be negative
  • ISBN: Optional, must be 10 or 13 digits, must be unique
Update Stock (Admin Only)
PUT /api/products/{id}/stockAuthorization: Bearer {token}Content-Type: application/json
{
"quantity": 50
}
Shopping Cart
Get Cart
GET /api/cartAuthorization: Bearer {token}
Add to Cart
POST /api/cart/itemsAuthorization: Bearer {token}Content-Type: application/json
{
"productId": 1,
"quantity": 2
}
Orders & Payments
Create Order
POST /api/orders/createAuthorization: Bearer {token}Content-Type: application/json
{
"shippingAddressId": 1,
"billingAddressId": 1,
"couponCode": "SAVE10"
}
Process Payment
POST /api/payments/processAuthorization: Bearer {token}Content-Type: application/json
{
"orderId": 123,
"paymentMethodId": 1
}
🧪 Testing
HTTP Test Files
Pre-built test files are available in Farum.Dev/Tests/:
  • AuthTests.http - Registration and login
  • ProductManagement.http - Product CRUD with authorization tests
  • ShoppingCart.http - Cart operations
  • PlaceOrder.http - Two-step checkout flow
  • Payments.http - Payment scenarios with test cards
  • Reviews.http - Review creation and voting
  • Wishlist.http - Wishlist management
  • Coupons.http - Coupon application
  • StockManagement.http - Admin stock operations
Use VS Code REST Client extension to run these tests.
🔐 Security Features
  • JWT token authentication with configurable expiration
  • Role-based authorization (Admin/User)
  • Password validation (minimum 6 characters)
  • Protected admin-only endpoints
  • Structured error responses (no information leakage)
📝 Project Structure
LittleBugShop/
├── Farum.Dev/
│ ├── Controllers/ # API endpoints
│ ├── Models/ # Data models and DTOs
│ ├── Services/ # Business logic (JWT, Payment)
│ ├── Tests/ # HTTP test files
│ ├── Database.cs # In-memory database
│ └── Program.cs # App configuration
├── README.md
└── .gitignore

🎓 Learning Resources
This project demonstrates:
  • RESTful API Design - Proper HTTP methods, status codes, and resource naming
  • Authentication & Authorization - JWT implementation with role-based access
  • Input Validation - Comprehensive validation with meaningful error messages
  • Business Logic - Cart management, stock control, order processing
  • Error Handling - Structured error responses across all endpoints
  • Testing Patterns - Pre-built test scenarios for common flows
🤝 Contributing
This is a personal testing sandbox, but feel free to fork and customize for your own learning!
📄 License
This project is for educational purposes. Use freely for learning and testing.
🐛 Found a Bug?
That's the point! This is a testing playground. Document it, reproduce it, and practice your bug reporting skills!
Happy Testing! 🧪✨
About
🐛 E-commerce API testing sandbox with payment simulation, JWT auth, and realistic flows - built for QA practice and test automation
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
🐛 LittleBugShop
A feature-rich e-commerce API backend designed as a testing sandbox for API automation, UI testing, and QA exploration. This project serves as a realistic yet controlled environment to practice testing strategies without the complexity of production systems.
🎯 Purpose
LittleBugShop serves as a private playground for:
  • API Testing Practice - Test REST endpoints, authentication flows, and complex business logic
  • Test Automation Development - Build and validate automation frameworks
  • QA Skill Building - Explore edge cases, failure scenarios, and validation strategies
  • UI Testing Integration - Backend ready for frontend test automation
  • Learning & Experimentation - Safe environment to break things and learn
The name "LittleBugShop" is a playful nod to its purpose: a shop full of intentional complexity where you can discover and practice finding bugs! 🐛
✨ Features
🛒 E-Commerce Core
  • Product browsing with advanced filtering (search, genre, author, price range)
  • Shopping cart management (add, update, remove items)
  • Real-time stock availability checking
  • Two-step checkout flow (order creation + payment processing)
  • Order history and status tracking
  • Comprehensive input validation with structured error responses
💳 Payment System
  • Multiple payment methods per user (Credit/Debit cards, PayPal)
  • Test card patterns for deterministic outcomes:

    • xxxx0000 → Success
    • xxxx1111 → Insufficient Funds
    • xxxx2222 → Timeout
    • xxxx3333 → Fraud Detection
    • xxxx4444 → Card Expired
    • xxxx5555 → Invalid CVV
    • xxxx6666 → Declined
  • Payment retry logic (cart preserved on failure)
  • Full/partial refund support
  • Transaction audit trail
👤 User Management
  • JWT authentication (cookie + Authorization header)
  • Role-based authorization (Admin/User)
  • User profiles with personal information
  • Multiple shipping/billing addresses
  • Default address management
⭐ Reviews & Social
  • Product reviews with 1-5 star ratings
  • Verified purchase badges
  • Review helpfulness voting (helpful/not helpful)
  • Admin moderation (hide/unhide reviews)
  • Review statistics (average rating, count)
💝 Wishlist
  • Add products to wishlist
  • Move wishlist items directly to cart
  • Track when items were added
🎟️ Coupon System
  • Percentage and fixed-amount discounts
  • Minimum purchase requirements
  • Usage limits (max uses per coupon)
  • Expiration dates
  • Admin usage reports
📦 Stock Management
  • Automatic stock reservation on order creation
  • Stock restoration on cancellation/refund
  • Low stock warnings
  • Admin stock control (set, increase, decrease)
  • Order expiration (15 minutes for pending orders)
🛡️ Error Handling
All endpoints return structured error responses:
{
"code": 401,
"message": "Authentication required. Please provide a valid JWT token."
}
Common error codes:
  • 400 - Bad Request (validation errors)
  • 401 - Unauthorized (missing/invalid token)
  • 403 - Forbidden (insufficient permissions)
  • 404 - Not Found (resource doesn't exist)
🏗️ Technology Stack
  • .NET 8.0 / ASP.NET Core Web API
  • In-Memory Database - No external dependencies, instant startup
  • JWT Bearer Authentication - Industry-standard auth
  • Swagger/OpenAPI - Interactive API documentation
  • C# 12 - Modern language features
🚀 Getting Started
Prerequisites
  • .NET 8.0 SDK or later
Run the Application
cd Farum.Dev
dotnet run
The API will start at http://localhost:5052
Access Swagger UI
Navigate to: http://localhost:5052/swagger
Test Users
The application comes pre-seeded with test data:
Admin User:
  • Username: admin
  • Password: admin123
  • Role: Admin (can manage products, stock, coupons)
Regular User:
  • Username: john_doe
  • Password: password123
  • Role: User (can shop, review, manage cart)
📚 API Documentation
Authentication
Register
POST /api/users/registerContent-Type: application/json
{
"username": "testuser",
"password": "password123",
"email": "test@example.com",
"firstName": "Test",
"lastName": "User"
}
Login
POST /api/users/loginContent-Type: application/json
{
"username": "admin",
"password": "admin123"
}
Response includes JWT token in both response body and HTTP-only cookie.
Products
Get All Products
GET /api/products?searchTerm=fiction&minPrice=10&maxPrice=50&sortBy=price&sortOrder=asc
Create Product (Admin Only)
POST /api/productsAuthorization: Bearer {token}Content-Type: application/json
{
"name": "Test Book",
"author": "John Doe",
"genre": "Fiction",
"isbn": "978-0134685991",
"price": 29.99,
"description": "A great book",
"stockQuantity": 100
}
Product Validation Rules:
  • Name: Required, 2-200 characters
  • Author: Required
  • Genre: Required
  • Description: Required
  • Price: Must be > 0 and ≤ 999,999.99
  • Stock: Cannot be negative
  • ISBN: Optional, must be 10 or 13 digits, must be unique
Update Stock (Admin Only)
PUT /api/products/{id}/stockAuthorization: Bearer {token}Content-Type: application/json
{
"quantity": 50
}
Shopping Cart
Get Cart
GET /api/cartAuthorization: Bearer {token}
Add to Cart
POST /api/cart/itemsAuthorization: Bearer {token}Content-Type: application/json
{
"productId": 1,
"quantity": 2
}
Orders & Payments
Create Order
POST /api/orders/createAuthorization: Bearer {token}Content-Type: application/json
{
"shippingAddressId": 1,
"billingAddressId": 1,
"couponCode": "SAVE10"
}
Process Payment
POST /api/payments/processAuthorization: Bearer {token}Content-Type: application/json
{
"orderId": 123,
"paymentMethodId": 1
}
🧪 Testing
HTTP Test Files
Pre-built test files are available in Farum.Dev/Tests/:
  • AuthTests.http - Registration and login
  • ProductManagement.http - Product CRUD with authorization tests
  • ShoppingCart.http - Cart operations
  • PlaceOrder.http - Two-step checkout flow
  • Payments.http - Payment scenarios with test cards
  • Reviews.http - Review creation and voting
  • Wishlist.http - Wishlist management
  • Coupons.http - Coupon application
  • StockManagement.http - Admin stock operations
Use VS Code REST Client extension to run these tests.
🔐 Security Features
  • JWT token authentication with configurable expiration
  • Role-based authorization (Admin/User)
  • Password validation (minimum 6 characters)
  • Protected admin-only endpoints
  • Structured error responses (no information leakage)
📝 Project Structure
LittleBugShop/
├── Farum.Dev/
│ ├── Controllers/ # API endpoints
│ ├── Models/ # Data models and DTOs
│ ├── Services/ # Business logic (JWT, Payment)
│ ├── Tests/ # HTTP test files
│ ├── Database.cs # In-memory database
│ └── Program.cs # App configuration
├── README.md
└── .gitignore

🎓 Learning Resources
This project demonstrates:
  • RESTful API Design - Proper HTTP methods, status codes, and resource naming
  • Authentication & Authorization - JWT implementation with role-based access
  • Input Validation - Comprehensive validation with meaningful error messages
  • Business Logic - Cart management, stock control, order processing
  • Error Handling - Structured error responses across all endpoints
  • Testing Patterns - Pre-built test scenarios for common flows
🤝 Contributing
This is a personal testing sandbox, but feel free to fork and customize for your own learning!
📄 License
This project is for educational purposes. Use freely for learning and testing.
🐛 Found a Bug?
That's the point! This is a testing playground. Document it, reproduce it, and practice your bug reporting skills!
Happy Testing! 🧪✨
About
🐛 E-commerce API testing sandbox with payment simulation, JWT auth, and realistic flows - built for QA practice and test automation
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
🐛 LittleBugShop
A feature-rich e-commerce API backend designed as a testing sandbox for API automation, UI testing, and QA exploration. This project serves as a realistic yet controlled environment to practice testing strategies without the complexity of production systems.
🎯 Purpose
LittleBugShop serves as a private playground for:
  • API Testing Practice - Test REST endpoints, authentication flows, and complex business logic
  • Test Automation Development - Build and validate automation frameworks
  • QA Skill Building - Explore edge cases, failure scenarios, and validation strategies
  • UI Testing Integration - Backend ready for frontend test automation
  • Learning & Experimentation - Safe environment to break things and learn
The name "LittleBugShop" is a playful nod to its purpose: a shop full of intentional complexity where you can discover and practice finding bugs! 🐛
✨ Features
🛒 E-Commerce Core
  • Product browsing with advanced filtering (search, genre, author, price range)
  • Shopping cart management (add, update, remove items)
  • Real-time stock availability checking
  • Two-step checkout flow (order creation + payment processing)
  • Order history and status tracking
  • Comprehensive input validation with structured error responses
💳 Payment System
  • Multiple payment methods per user (Credit/Debit cards, PayPal)
  • Test card patterns for deterministic outcomes:

    • xxxx0000 → Success
    • xxxx1111 → Insufficient Funds
    • xxxx2222 → Timeout
    • xxxx3333 → Fraud Detection
    • xxxx4444 → Card Expired
    • xxxx5555 → Invalid CVV
    • xxxx6666 → Declined
  • Payment retry logic (cart preserved on failure)
  • Full/partial refund support
  • Transaction audit trail
👤 User Management
  • JWT authentication (cookie + Authorization header)
  • Role-based authorization (Admin/User)
  • User profiles with personal information
  • Multiple shipping/billing addresses
  • Default address management
⭐ Reviews & Social
  • Product reviews with 1-5 star ratings
  • Verified purchase badges
  • Review helpfulness voting (helpful/not helpful)
  • Admin moderation (hide/unhide reviews)
  • Review statistics (average rating, count)
💝 Wishlist
  • Add products to wishlist
  • Move wishlist items directly to cart
  • Track when items were added
🎟️ Coupon System
  • Percentage and fixed-amount discounts
  • Minimum purchase requirements
  • Usage limits (max uses per coupon)
  • Expiration dates
  • Admin usage reports
📦 Stock Management
  • Automatic stock reservation on order creation
  • Stock restoration on cancellation/refund
  • Low stock warnings
  • Admin stock control (set, increase, decrease)
  • Order expiration (15 minutes for pending orders)
🛡️ Error Handling
All endpoints return structured error responses:
{
"code": 401,
"message": "Authentication required. Please provide a valid JWT token."
}
Common error codes:
  • 400 - Bad Request (validation errors)
  • 401 - Unauthorized (missing/invalid token)
  • 403 - Forbidden (insufficient permissions)
  • 404 - Not Found (resource doesn't exist)
🏗️ Technology Stack
  • .NET 8.0 / ASP.NET Core Web API
  • In-Memory Database - No external dependencies, instant startup
  • JWT Bearer Authentication - Industry-standard auth
  • Swagger/OpenAPI - Interactive API documentation
  • C# 12 - Modern language features
🚀 Getting Started
Prerequisites
  • .NET 8.0 SDK or later
Run the Application
cd Farum.Dev
dotnet run
The API will start at http://localhost:5052
Access Swagger UI
Navigate to: http://localhost:5052/swagger
Test Users
The application comes pre-seeded with test data:
Admin User:
  • Username: admin
  • Password: admin123
  • Role: Admin (can manage products, stock, coupons)
Regular User:
  • Username: john_doe
  • Password: password123
  • Role: User (can shop, review, manage cart)
📚 API Documentation
Authentication
Register
POST /api/users/registerContent-Type: application/json
{
"username": "testuser",
"password": "password123",
"email": "test@example.com",
"firstName": "Test",
"lastName": "User"
}
Login
POST /api/users/loginContent-Type: application/json
{
"username": "admin",
"password": "admin123"
}
Response includes JWT token in both response body and HTTP-only cookie.
Products
Get All Products
GET /api/products?searchTerm=fiction&minPrice=10&maxPrice=50&sortBy=price&sortOrder=asc
Create Product (Admin Only)
POST /api/productsAuthorization: Bearer {token}Content-Type: application/json
{
"name": "Test Book",
"author": "John Doe",
"genre": "Fiction",
"isbn": "978-0134685991",
"price": 29.99,
"description": "A great book",
"stockQuantity": 100
}
Product Validation Rules:
  • Name: Required, 2-200 characters
  • Author: Required
  • Genre: Required
  • Description: Required
  • Price: Must be > 0 and ≤ 999,999.99
  • Stock: Cannot be negative
  • ISBN: Optional, must be 10 or 13 digits, must be unique
Update Stock (Admin Only)
PUT /api/products/{id}/stockAuthorization: Bearer {token}Content-Type: application/json
{
"quantity": 50
}
Shopping Cart
Get Cart
GET /api/cartAuthorization: Bearer {token}
Add to Cart
POST /api/cart/itemsAuthorization: Bearer {token}Content-Type: application/json
{
"productId": 1,
"quantity": 2
}
Orders & Payments
Create Order
POST /api/orders/createAuthorization: Bearer {token}Content-Type: application/json
{
"shippingAddressId": 1,
"billingAddressId": 1,
"couponCode": "SAVE10"
}
Process Payment
POST /api/payments/processAuthorization: Bearer {token}Content-Type: application/json
{
"orderId": 123,
"paymentMethodId": 1
}
🧪 Testing
HTTP Test Files
Pre-built test files are available in Farum.Dev/Tests/:
  • AuthTests.http - Registration and login
  • ProductManagement.http - Product CRUD with authorization tests
  • ShoppingCart.http - Cart operations
  • PlaceOrder.http - Two-step checkout flow
  • Payments.http - Payment scenarios with test cards
  • Reviews.http - Review creation and voting
  • Wishlist.http - Wishlist management
  • Coupons.http - Coupon application
  • StockManagement.http - Admin stock operations
Use VS Code REST Client extension to run these tests.
🔐 Security Features
  • JWT token authentication with configurable expiration
  • Role-based authorization (Admin/User)
  • Password validation (minimum 6 characters)
  • Protected admin-only endpoints
  • Structured error responses (no information leakage)
📝 Project Structure
LittleBugShop/
├── Farum.Dev/
│ ├── Controllers/ # API endpoints
│ ├── Models/ # Data models and DTOs
│ ├── Services/ # Business logic (JWT, Payment)
│ ├── Tests/ # HTTP test files
│ ├── Database.cs # In-memory database
│ └── Program.cs # App configuration
├── README.md
└── .gitignore

🎓 Learning Resources
This project demonstrates:
  • RESTful API Design - Proper HTTP methods, status codes, and resource naming
  • Authentication & Authorization - JWT implementation with role-based access
  • Input Validation - Comprehensive validation with meaningful error messages
  • Business Logic - Cart management, stock control, order processing
  • Error Handling - Structured error responses across all endpoints
  • Testing Patterns - Pre-built test scenarios for common flows
🤝 Contributing
This is a personal testing sandbox, but feel free to fork and customize for your own learning!
📄 License
This project is for educational purposes. Use freely for learning and testing.
🐛 Found a Bug?
That's the point! This is a testing playground. Document it, reproduce it, and practice your bug reporting skills!
Happy Testing! 🧪✨
About
🐛 E-commerce API testing sandbox with payment simulation, JWT auth, and realistic flows - built for QA practice and test automation
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
🐛 LittleBugShop
A feature-rich e-commerce API backend designed as a testing sandbox for API automation, UI testing, and QA exploration. This project serves as a realistic yet controlled environment to practice testing strategies without the complexity of production systems.
🎯 Purpose
LittleBugShop serves as a private playground for:
  • API Testing Practice - Test REST endpoints, authentication flows, and complex business logic
  • Test Automation Development - Build and validate automation frameworks
  • QA Skill Building - Explore edge cases, failure scenarios, and validation strategies
  • UI Testing Integration - Backend ready for frontend test automation
  • Learning & Experimentation - Safe environment to break things and learn
The name "LittleBugShop" is a playful nod to its purpose: a shop full of intentional complexity where you can discover and practice finding bugs! 🐛
✨ Features
🛒 E-Commerce Core
  • Product browsing with advanced filtering (search, genre, author, price range)
  • Shopping cart management (add, update, remove items)
  • Real-time stock availability checking
  • Two-step checkout flow (order creation + payment processing)
  • Order history and status tracking
  • Comprehensive input validation with structured error responses
💳 Payment System
  • Multiple payment methods per user (Credit/Debit cards, PayPal)
  • Test card patterns for deterministic outcomes:

    • xxxx0000 → Success
    • xxxx1111 → Insufficient Funds
    • xxxx2222 → Timeout
    • xxxx3333 → Fraud Detection
    • xxxx4444 → Card Expired
    • xxxx5555 → Invalid CVV
    • xxxx6666 → Declined
  • Payment retry logic (cart preserved on failure)
  • Full/partial refund support
  • Transaction audit trail
👤 User Management
  • JWT authentication (cookie + Authorization header)
  • Role-based authorization (Admin/User)
  • User profiles with personal information
  • Multiple shipping/billing addresses
  • Default address management
⭐ Reviews & Social
  • Product reviews with 1-5 star ratings
  • Verified purchase badges
  • Review helpfulness voting (helpful/not helpful)
  • Admin moderation (hide/unhide reviews)
  • Review statistics (average rating, count)
💝 Wishlist
  • Add products to wishlist
  • Move wishlist items directly to cart
  • Track when items were added
🎟️ Coupon System
  • Percentage and fixed-amount discounts
  • Minimum purchase requirements
  • Usage limits (max uses per coupon)
  • Expiration dates
  • Admin usage reports
📦 Stock Management
  • Automatic stock reservation on order creation
  • Stock restoration on cancellation/refund
  • Low stock warnings
  • Admin stock control (set, increase, decrease)
  • Order expiration (15 minutes for pending orders)
🛡️ Error Handling
All endpoints return structured error responses:
{
"code": 401,
"message": "Authentication required. Please provide a valid JWT token."
}
Common error codes:
  • 400 - Bad Request (validation errors)
  • 401 - Unauthorized (missing/invalid token)
  • 403 - Forbidden (insufficient permissions)
  • 404 - Not Found (resource doesn't exist)
🏗️ Technology Stack
  • .NET 8.0 / ASP.NET Core Web API
  • In-Memory Database - No external dependencies, instant startup
  • JWT Bearer Authentication - Industry-standard auth
  • Swagger/OpenAPI - Interactive API documentation
  • C# 12 - Modern language features
🚀 Getting Started
Prerequisites
  • .NET 8.0 SDK or later
Run the Application
cd Farum.Dev
dotnet run
The API will start at http://localhost:5052
Access Swagger UI
Navigate to: http://localhost:5052/swagger
Test Users
The application comes pre-seeded with test data:
Admin User:
  • Username: admin
  • Password: admin123
  • Role: Admin (can manage products, stock, coupons)
Regular User:
  • Username: john_doe
  • Password: password123
  • Role: User (can shop, review, manage cart)
📚 API Documentation
Authentication
Register
POST /api/users/registerContent-Type: application/json
{
"username": "testuser",
"password": "password123",
"email": "test@example.com",
"firstName": "Test",
"lastName": "User"
}
Login
POST /api/users/loginContent-Type: application/json
{
"username": "admin",
"password": "admin123"
}
Response includes JWT token in both response body and HTTP-only cookie.
Products
Get All Products
GET /api/products?searchTerm=fiction&minPrice=10&maxPrice=50&sortBy=price&sortOrder=asc
Create Product (Admin Only)
POST /api/productsAuthorization: Bearer {token}Content-Type: application/json
{
"name": "Test Book",
"author": "John Doe",
"genre": "Fiction",
"isbn": "978-0134685991",
"price": 29.99,
"description": "A great book",
"stockQuantity": 100
}
Product Validation Rules:
  • Name: Required, 2-200 characters
  • Author: Required
  • Genre: Required
  • Description: Required
  • Price: Must be > 0 and ≤ 999,999.99
  • Stock: Cannot be negative
  • ISBN: Optional, must be 10 or 13 digits, must be unique
Update Stock (Admin Only)
PUT /api/products/{id}/stockAuthorization: Bearer {token}Content-Type: application/json
{
"quantity": 50
}
Shopping Cart
Get Cart
GET /api/cartAuthorization: Bearer {token}
Add to Cart
POST /api/cart/itemsAuthorization: Bearer {token}Content-Type: application/json
{
"productId": 1,
"quantity": 2
}
Orders & Payments
Create Order
POST /api/orders/createAuthorization: Bearer {token}Content-Type: application/json
{
"shippingAddressId": 1,
"billingAddressId": 1,
"couponCode": "SAVE10"
}
Process Payment
POST /api/payments/processAuthorization: Bearer {token}Content-Type: application/json
{
"orderId": 123,
"paymentMethodId": 1
}
🧪 Testing
HTTP Test Files
Pre-built test files are available in Farum.Dev/Tests/:
  • AuthTests.http - Registration and login
  • ProductManagement.http - Product CRUD with authorization tests
  • ShoppingCart.http - Cart operations
  • PlaceOrder.http - Two-step checkout flow
  • Payments.http - Payment scenarios with test cards
  • Reviews.http - Review creation and voting
  • Wishlist.http - Wishlist management
  • Coupons.http - Coupon application
  • StockManagement.http - Admin stock operations
Use VS Code REST Client extension to run these tests.
🔐 Security Features
  • JWT token authentication with configurable expiration
  • Role-based authorization (Admin/User)
  • Password validation (minimum 6 characters)
  • Protected admin-only endpoints
  • Structured error responses (no information leakage)
📝 Project Structure
LittleBugShop/
├── Farum.Dev/
│ ├── Controllers/ # API endpoints
│ ├── Models/ # Data models and DTOs
│ ├── Services/ # Business logic (JWT, Payment)
│ ├── Tests/ # HTTP test files
│ ├── Database.cs # In-memory database
│ └── Program.cs # App configuration
├── README.md
└── .gitignore

🎓 Learning Resources
This project demonstrates:
  • RESTful API Design - Proper HTTP methods, status codes, and resource naming
  • Authentication & Authorization - JWT implementation with role-based access
  • Input Validation - Comprehensive validation with meaningful error messages
  • Business Logic - Cart management, stock control, order processing
  • Error Handling - Structured error responses across all endpoints
  • Testing Patterns - Pre-built test scenarios for common flows
🤝 Contributing
This is a personal testing sandbox, but feel free to fork and customize for your own learning!
📄 License
This project is for educational purposes. Use freely for learning and testing.
🐛 Found a Bug?
That's the point! This is a testing playground. Document it, reproduce it, and practice your bug reporting skills!
Happy Testing! 🧪✨
About
🐛 E-commerce API testing sandbox with payment simulation, JWT auth, and realistic flows - built for QA practice and test automation
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Contributors
Languages