Part 1: The Big Picture

This part begins our journey into the world of Test-Driven Development (TDD) and provides us with all the essentials we need to start using it for unit testing our code. We begin with an introduction to the principles and practices of TDD, including how it fits into Agile development. Then, we focus our attention on how to apply these practices to write Go unit tests, exploring the fundamentals of test writing and running in Go. Based on these essentials, we explore how to write isolated tests with mocks and simplify our assertions. We learn how to use the third-party open source assertion libraries, ginkgo and testify, which supplement Go’s standard testing library. Finally, we learn how to implement and leverage the popular technique of table-driven testing to easily write tests that cover a variety of scenarios, making it easy to cover multiple test scenarios and extend the scope of our tests. In this section, we also begin the implementation of our...