Challenges of Testing Concurrent Code

In the previous chapters, we covered all of the essentials knowledge that TDD practitioners will need to test their applications. We learned how to unit test our code in the development phase, how to integration test our larger components, and how to end-to-end test our entire services. These are essential building blocks for building and running any software project. The test suite allows us to verify that our application is functioning according to the client’s requirements.

As the system grows and matures, developers then must inevitably consider how to change and evolve their code, ensuring that their system remains performant and scalable. As discussed in Chapter 7, Refactoring in Go, there are some common refactoring techniques that we can use to make the code change process easier. One common system refactoring technique is breaking up monolithic applications and replacing them with microservice architectures. In Chapter 8, Testing...