Gain insights into unit testing principles, and delve into configuring and using NUnit. Discover how to write effective tests, maximize coverage, and elevate your testing projects.

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Industry, employers, startups, and amateur developers are increasingly looking towards unit testing their software. Unit testing is one of the most reliable ways to find and keep software bugs at bay, thus reducing costs and development pains. Developers working with the .NET framework are overwhelmingly turning to NUnit to meet their unit testing needs.

In this course, you’ll learn the principles of unit testing, and in the process, learn to configure and use the NUnit testing framework. Given that the course places an emphasis on principles, these skills are transferable to other unit testing frameworks. Alongside these, you’ll also get hands-on experience with projects and exercises that provide ample opportunities to learn how to design effective tests in the NUnit framework.

At the end of the course, you’ll be able to quickly write unit tests that maximize logical coverage, test complex applications, and better organize your testing projects—setting you up as a natural leader in your organization.

Mastering Unit Testing Principles with NUnit

## Introduction

NUnit is one of the most widely used unit testing frameworks in the .NET industry. NUnit code is essentially test code and the code that it tests is the application code. In your IDE, complete the following steps to set up an NUnit project:

- Create a .NET core 5.0 or 6.0 console application project called `Project`.
- In the same solution as the console application project, add an NUnit test project called `ProjectTest`.
- In the NUnit test project, add a reference to the console application project.

## Set up an application code project and test code project

Set up an application code project and test code project in your IDE. The details on how to do this are included in the appendix of this course.

## Initial application and test code

Add a class called `Account` in the `Project`. In the `Account` class, paste the following code:


# Introduction

NUnit is one of the most widely used unit testing frameworks in the .NET industry. NUnit code is essentially test code and the code that it tests is the application code. In your IDE, complete the following steps to set up an NUnit project:

- Create a .NET core 5.0 or 6.0 console application project called `Project`.
- In the same solution as the console application project, add an NUnit test project called `ProjectTest`.
- In the NUnit test project, add a reference to the console application project.

# Set up an application code project and test code project

Set up an application code project and test code project in your IDE. The details on how to do this are included in the appendix of this course.

# Initial application and test code

Add a class called `Account` in the `Project`. In the `Account` class, paste the following code:


Learn and practice writing your first NUnit tests in this lesson.

Fundamentals of Unit Testing

Testing Conditions With Classic And Fluent Assertions

Making Unit Testing More Effective

Unit Testing Code with External Dependencies

Conclusion

Appendix - Unit Test Project Organization and Console Setup

Running and Interpreting Tests in Your Local Environment

Introduction

Set up an application code project and test code project

Initial application and test code