Test-Driven Development in Go: A practical guide to writing idiomatic and efficient Go tests through real-world examples

Explore Go testing techniques and leverage TDD to deliver and maintain microservices architecture, including contract, end-to-end, and unit testing

Key Features
Write Go test suites using popular mocking and testing frameworks
Leverage TDD to implement testing at all levels of web applications and microservices architecture
Master the art of writing tests that cover edge cases and concurrent code
Book Description
Experienced developers understand the importance of designing a comprehensive testing strategy to ensure efficient shipping and maintaining services in production. This book shows you how to utilize test-driven development (TDD), a widely adopted industry practice, for testing your Go apps at different levels. You'll also explore challenges faced in testing concurrent code, and learn how to leverage generics and write fuzz tests.

The book begins by teaching you how to use TDD to tackle various problems, from simple mathematical functions to web apps. You'll then learn how to structure and run your unit tests using Go's standard testing library, and explore two popular testing frameworks, Testify and Ginkgo. You'll also implement test suites using table-driven testing, a popular Go technique. As you advance, you'll write and run behavior-driven development (BDD) tests using Ginkgo and Godog. Finally, you'll explore the tricky aspects of implementing and testing TDD in production, such as refactoring your code and testing microservices architecture with contract testing implemented with Pact. All these techniques will be demonstrated using an example REST API, as well as smaller bespoke code examples.

By the end of this book, you'll have learned how to design and implement a comprehensive testing strategy for your Go applications and microservices architecture.

What you will learn
Create practical Go unit tests using mocks and assertions with Testify
Build table-driven test suites for HTTP web applications
Write BDD-style tests using the Ginkgo testing framework
Use the Godog testing framework to reliably test web applications
Verify microservices architecture using Pact contract testing
Develop tests that cover edge cases using property testing and fuzzing
Who this book is for
If you are an intermediate-level developer or software testing professional who knows Go fundamentals and is looking to deliver projects with Go, then this book is for you. Knowledge of Go syntax, structs, functions, and interfaces will help you get the most out of this book.

Table of Contents
Getting to Grips with Test-Driven Development
Unit Testing Essentials
Mocking and Assertion Frameworks
Building Efficient Test Suites
Performing End-to-End Testing
End-to-End Testing the BookSwap Web Application
Refactoring in Go
Testing Microservice Architectures
Challenges of Testing Concurrent Code
Testing Edge Cases
Working with Generics