Book Image

Mastering Go - Second Edition

By : Mihalis Tsoukalos
Book Image

Mastering Go - Second Edition

By: Mihalis Tsoukalos

Overview of this book

Often referred to (incorrectly) as Golang, Go is the high-performance systems language of the future. Mastering Go, Second Edition helps you become a productive expert Go programmer, building and improving on the groundbreaking first edition. Mastering Go, Second Edition shows how to put Go to work on real production systems. For programmers who already know the Go language basics, this book provides examples, patterns, and clear explanations to help you deeply understand Go’s capabilities and apply them in your programming work. The book covers the nuances of Go, with in-depth guides on types and structures, packages, concurrency, network programming, compiler design, optimization, and more. Each chapter ends with exercises and resources to fully embed your new knowledge. This second edition includes a completely new chapter on machine learning in Go, guiding you from the foundation statistics techniques through simple regression and clustering to classification, neural networks, and anomaly detection. Other chapters are expanded to cover using Go with Docker and Kubernetes, Git, WebAssembly, JSON, and more. If you take the Go programming language seriously, the second edition of this book is an essential guide on expert techniques.
Table of Contents (20 chapters)
Title Page

Testing Go code

Software testing is a very large subject and cannot be covered in a single section of a chapter in a book. So, this brief section will try to present as much practical information as possible.

Go allows you to write tests for your Go code in order to detect bugs. Strictly speaking, this section is about automated testing, which involves writing extra code to verify whether the real code – that is, the production code – works as expected or not. Thus, the result of a test function is either PASS or FAIL. You will see how this works shortly.

Although the Go approach to testing might look simple at first, especially if you compare it with the testing practices of other programming languages, it is very efficient and effective because it does not require too much of the developer's time.

Go follows certain conventions regarding testing. First of all...