Welcome to the next stage in mastering Test Driven Development (TDD) in Go, where we will focus on setting up a robust testing environment. As you have learned through the TDD process, the Red-Green-Refactor cycle involves writing a failing test, implementing just enough code to pass it, and refining the implementation. In this lesson, we will set up the necessary tools for testing with Testify, guiding you on how to create an efficient Go testing environment that complements the TDD cycle.

Testify is a popular and widely used assertion and mocking library for Go. Now, let's dive into setting up our testing environment systematically.

To start using Testify with Go, you'll need to create a test environment within your Go project. This involves initializing a Go module and adding the Testify library as a dependency.

1. Initialize a new Go module in your project directory:

2. Add Testify to your project as a dependency using the go get command:

These commands will set up your Go module and add the Testify library for assertions and mocking capabilities.