Let's start with the most often-discussed way of testing software: unit tests. You are most likely familiar with them: they are based on the concept of testing one function at a time and making sure it reacts correctly to every possible and reasonable input. This way of testing is essential when we develop individual functions that have a great impact on the microservice. So, if we have a function that performs some major logical implementation in our application, this is certainly the most reliable way to ensure it works correctly.

Let's look at the following topics:

• Defining unit tests
• Setting up Xcode
• Unit tests for microservices

Okay, are you ready to dive into this? Let's get started with unit tests!