Unit Test in Swift: A Starting Guide

Learn key concepts about testing and how you can start adding Unit Tests to your iOS project

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Do you like fixing bugs?

I'm sure you don't.

Having a proper unit test structure will help you avoid headaches in the future.

Besides helping to make sure your code still works as expected after every change you make, unit tests have several implicit benefits, such as:

1. Being more confident when shipping new code to production.
2. Increasing overall code quality.
3. Reducing code-base complexity.

Let’s see the key concepts behind tests and how to add them to your iOS project.

What are Unit Tests?

Just to be on the same page, we can say that unit tests are pieces of code that check if a small, isolated, and well-defined block of our application’s code (aka unit) is working as expected.

Test Structure

There are several components we need to understand before we jump in into the coding part.