Designing Game Logic with TDD and Hexagonal Architecture

Writing clean, maintainable domain logic is one of the greatest challenges in software development. Starting with a test-first mindset ensures your application remains flexible, robust, and easy to refactor as it grows. This text-based course guides you through the process of initiating a new word game instance using Test-Driven Development (TDD) and Hexagonal Architecture. You will learn how to isolate your core business rules from external dependencies, ensuring your code is highly testable and decoupled from databases or user interfaces. What you'll learn: - Understand the core principles of Test-Driven Development and the Red-Green-Refactor cycle. - Apply Hexagonal Architecture principles to separate game domain logic from external infrastructure. - Create testable domain models for initiating and managing a game instance. - Configure test doubles and clean interfaces to isolate your domain tests. - Practice writing clean, self-documenting unit tests for complex business rules. We begin by exploring foundational architectural patterns and TDD concepts before diving into step-by-step written guides and code snippets. You will follow a logical progression from writing your first failing test to implementing robust, decoupled domain code. This course is designed for beginner to intermediate developers who want to improve their software design skills, with no prior architectural experience required. Start reading today to build cleaner, more maintainable software from the very first line of code.