Unit Testing 101: From Zero to Hero

Do you want to start writing unit tests? But, you don’t know where to start? Do you want to adopt unit testing in your team? I can help you.

If you’re a beginner or a seasoned developer new to unit testing, this is the place for you.

Write it

Write your first unit tests with MSTest It’s the starting point to write unit tests. No prerequisites needed.

Identify and fix these 4 common mistakes when writing your first unit tests. Learn one of these 4 naming conventions and stick to it.

Find these first three posts plus a summary of "The Art of Unit Testing" and my best tips from this series on my free ebook “Unit Testing 101”. Download your free copy here or click on the image below.
Grab your own copy of Unit Testing 101

When writing your unit tests, make sure you don’t duplicate logic in Asserts. That’s THE most common mistake on unit testing.

Improve it

How to write good unit tests shows two common issues when writing unit tests: complex setup scenarios and hidden test values.

Make sure to always write a failing test first.

Use Builders to create test data. And, learn how to write tests that use DateTime.Now.

Fake it

Learn what fakes are in unit testing. It shows the difference between stubs and mocks. Follow these tips for better stubs and mocks in C#.

Read how to create fakes with Moq, an easy to use mocking library.

If you find yourself using lots of fakes, take advantage of automocking with TypeBuilder and AutoFixture to write simpler tests.

Master it

Last but not least, read all tips of this series on Unit Testing Best Practices. As an example, see how to refactor a real-world test to follow some of those best practices. Deep into assertions, check how to write better assertions and how to write custom assertions.

If you want to practice writing some unit tests, check my Unit Testing 101 repository over on GitHub.

canro91/Testing101 - GitHub

Happy testing!