Library Management System

Description

A simple Library Management System with the following features:

• Add books to the library.
• Borrow books from the library.
• Return borrowed books.
• View a list of all available books.

This project focuses on clean, maintainable code while adhering to Test-Driven Development (TDD) principles, SOLID principles and clean code practices.

Instructions for Running

Prerequisites

• Java 17 or later
• JUnit 5
• Maven 3.6.3 or later

Running the Application

• Clone the repository.
• Navigate to the root directory.
• Use the CLI class LibraryManagementSystemCLI to run the library management system.
• Follow menu-driven options for interacting with the system.

Running Tests

• Option 1 : Execute mvn clean test
• Option 2 : Import Run all tests with coverage configuration in your IDE and run the tests.

Test-Driven Development (TDD)

1. Wrote failing test cases before implementing any functionality.
2. Incrementally developed the system while ensuring all tests pass.
3. Refactored for clean code and maintainability after passing tests.

Test Coverage Report

Implementation Details

Design Patterns Used

1. Factory Pattern

   • The LibraryRepositoryFactory dynamically creates repository instances based on the provided repository type (e.g., IN_MEMORY, DATABASE, FILESYSTEM).

2. Singleton Pattern

   • The LibraryRepositoryFactory is implemented as a singleton to ensure consistent access to a single factory instance throughout the application.

3. Dependency Injection

   • The LibraryServiceImpl uses constructor-based dependency injection to decouple service logic from repository creation.

Principles Followed

• SOLID Principles.
• Clean Code Practices.