E-Shop Domain Project

This project implements a core domain model for an E-Shop system, designed for unit testing practice.

Main Application Paths

The logical flow of the application follows these steps:

1. Product Creation:
   • Product is the base abstract class.
   • PhysicalProduct (with weight, shipping) and DigitalProduct (with download URL) are concrete implementations.
2. Shopping Cart:
   • Users add products to a Cart.
   • Cart manages line items (CartItem) and calculates totals.
3. Order Processing:
   • The OrderService converts a Cart into an Order.
   • It integrates with a PaymentProcessor (Interface) to handle payments.
   • If payment succeeds, the order is marked as PAID.

Requirements

• Java: JDK 25 (or latest comparable JDK available in your environment, configured in pom.xml as 25).
• Maven: 3.6+

How to Run the Application

You can run the demonstration App class using Maven:

mvn compile exec:java -Dexec.mainClass="com.example.eshop.App"

This will execute the main method which:

1. Creates sample products.
2. Adds them to a cart.
3. Processes a mock payment and places an order.
4. Prints the results to the console.

How to Run Tests

The project uses JUnit 5 for unit testing.

To run all tests:

mvn test

To run a specific test class:

mvn -Dtest=AppTest test