Preface

At the beginning of my career as a software engineer, I was focused on understanding technical concepts and delivering functionality as fast as I could. As I advanced in my career and matured my code-writing craft, I started to understand the importance of code quality and maintainability. This is especially important for Go developers since the language is designed around the values of efficiency, simplicity, and safety.

This book aims to provide you with all the tools you need to elevate the quality of your own Go code, through the industry-standard development methodology of Test-Driven Development (TDD). It provides a comprehensive introduction to the principles and practices of TDD, helping you get started without any prior knowledge. It also demonstrates how to apply this methodology to Go, which continues to gain popularity as a development language.

Throughout this book, we will explore how to leverage the benefits of TDD demonstrated with a variety of code examples, including building a demo REST API. This practical approach will teach you how to design testable code and write efficient Go tests, using the standard testing library as well as popular open source third-party libraries in the Go development ecosystem.

This book introduces the practices of TDD and teaches you how to use them in the development of Go applications using practical examples. It demonstrates how to leverage the benefits of TDD in applications at every level, ensuring that they deliver functional and non-functional requirements. It also touches on important principles of how to design and implement testable code, such as containerization, database integrations, and microservice architectures.

I hope you will find this book helpful in your journey to becoming a better engineer. In its pages, I have included all the knowledge that I wish I had when I first started out with Go development, which I hope will help make writing well-tested code easier for you.

Happy reading!