UnitTestDemo

🛒 DiscountCalculator

This is a discount calculator that determines the final price of a product based on its original price and the customer's membership type.

📜 Description

The DiscountCalculator class applies different discounts based on the membership type:

• 🚫 Non-Members: No discount.
• 💎 Silver Members: 5% discount on purchases over $100.
• 🌟 Gold Members: 10% discount on purchases over $50.
• 🏆 Platinum Members: 20% discount, regardless of the purchase amount.

Unit Tests 🧪

Test Case	Input	Expected Output
No Member Exact Purchase	100.0, NONE	100.0
No Member Over Purchase	200.0, NONE	200.0
No Member Under Purchase	50.0, NONE	50.0
Silver Member Under Limit	99.99, SILVER	99.99
Silver Member At Limit	100.0, SILVER	100.0
Silver Member Above Limit	101.0, SILVER	95.95
Gold Member Under Limit	49.0, GOLD	49.0
Gold Member At Limit	50.0, GOLD	50.0
Gold Member Over Limit	51.0, GOLD	45.9
Platinum Member Regular Purchase	100.0, PLATINUM	80.0
Negative Price	-1.0, NONE	Exception thrown
No Price	0.0, NONE	Exception thrown

3-Value Boundary Analysis 🔍

We tested the values at the edges of input ranges:

1. Silver Members:

   • Boundary Below Limit:
     • Test: Silver Member Under Limit (99.99)
     • Expected: No discount.
   • Boundary At Limit:
     • Test: Silver Member At Limit (100.0)
     • Expected: No discount.
   • Boundary Above Limit:
     • Test: Silver Member Above Limit (101.0)
     • Expected: 5% discount applied.

2. Gold Members:

   • Boundary Below Limit:
     • Test: Gold Member Under Limit (49.0)
     • Expected: No discount.
   • Boundary At Limit:
     • Test: Gold Member At Limit (50.0)
     • Expected: No discount.
   • Boundary Over Limit:
     • Test: Gold Member Over Limit (51.0)
     • Expected: 10% discount applied.

🛠 Requirements

• Java 11 or higher ☕
• Maven 📦

🏗️ Project Structure

UnitTestDemo/
├── pom.xml                   # Maven project configuration file
├── src/
│   ├── main/
│   │   ├── java/
│   │   │   └── MembershipDiscount/
│   │   │       └── DiscountCalculator.java    # Main class for discount calculation
│   │   └── resources/        
│   └── test/
│       ├── java/
│       │   └── MembershipDiscount/
│       │       └── DiscountCalculatorTest.java # Test class for DiscountCalculator
│       └── resources/        
└── files/