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Unit Testing in .NET 9 and C# with NUnit 4.x and MOQ

Aref Karimi

If you're a .NET developer looking to improve the quality and reliability of your code, then this online course on Unit Testing in .NET  and C# with NUnit and MOQ is perfect for you.

In this comprehensive course, you'll learn everything you need about NUnit and its usage in the latest version of .NET.

With C#, including how to write practical unit tests using the NUnit and MOQ frameworks. You'll also learn about Test Driven Development (TDD) and how to apply it to your projects.

Read more

If you're a .NET developer looking to improve the quality and reliability of your code, then this online course on Unit Testing in .NET  and C# with NUnit and MOQ is perfect for you.

In this comprehensive course, you'll learn everything you need about NUnit and its usage in the latest version of .NET.

With C#, including how to write practical unit tests using the NUnit and MOQ frameworks. You'll also learn about Test Driven Development (TDD) and how to apply it to your projects.

But that's not all—we'll also cover unit testing legacy code, a crucial skill for any developer who wants to maintain and improve existing codebases. To ensure you're fully prepared for any job interviews, we've included interview questions and answers related to unit testing and NUnit.

Our expert instructor will guide you through the course, providing clear explanations and hands-on examples to help you master the material. By the end of the period, you'll deeply understand NUnit and unit testing and the skills and knowledge needed to apply these techniques to your projects confidently.

This course is perfect for anyone who wants to take their .NET development skills to the next level. Whether you're a beginner looking to learn the basics of unit testing or an experienced developer looking to improve your skills, this course has everything you need to succeed.

So don't wait - enroll now and start mastering unit testing with NUnit today.

Enroll now

What's inside

Learning objectives

  • Unit testing concepts and fundamentals
  • Writing and executing tests with nunit
  • Mocking and mocking frameworks (moq)
  • Test driven development (tdd)
  • Techniques of testing legacy (old) code

Syllabus

Introduction

An introduction to the course and what you will learn in this course.

What is unit testing? What types of unit testing exist?

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What is NUnit?
Writing Tests
Writing The First Test with NUnit: Arrange, Act, Assert.
The TestFixture Attribute
Test Method's Naming Conventions
After learning about how Arrange and Act are performed with NUnit, let's learn about the Asserts.
Simple Asserts
Handling Exceptions
Working with Types (IsInstanceOf and IsAssingableFrom methods)
The StringAssert Class
The CollectionAssert Class
Asserting with Constraints
Advanced Topics
TestFixture - Advanced
Setup and TearDown
The TestCase Attribute - Passing values to parametrised test methods.
Grouping Asserts Together
Mocking Technique and MOQ Framework
Intriduction to Mocking and MOQ
The Personal Photos Project
Testing an ASP.NET MVC Action with MOQ Framework and NUnit
Testing an async ASP.NET MVC Action with Mock
Using Setup and Return with MOQ
Test-Driven Development or TDD

What is Test-Driven Development (TDD) and what are its benefits and drawbacks?

TDD Demo - Writing C# Code with TDD Technique
Testing the Legcy Code

We don't always get to write unit tests with NUnit for our own code. Often we find a code that was written long ago by someone else. You may ask, why would you write unit tests for an old code?

The answer is that we don't write unit tests to see if a piece of code or a function works as expected. We also write unit tests to make sure our new changes have not broken the old or existing code. That is why it is highly recommended that to write unit tests for legacy code before you begin to modify it.

In this lecture you will learn about a technique called Sprout Method. Using this technique you can write a unit test for a piece of code tha you add to a legacy code to make sure everything works as expected.

Testing a Legacy Code in Action
Interview Questions

This test includes common questions related to unit testing and NUnit.

Bonus Lectures
Bonus: Using AI for Generating Unit Tests Automatically

Save this course

Save Unit Testing in .NET 9 and C# with NUnit 4.x and MOQ to your list so you can find it easily later:
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Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Unit Testing in .NET 9 and C# with NUnit 4.x and MOQ with these activities:
Review C# Fundamentals
Solidify your understanding of C# syntax, data types, and control flow to better grasp the code examples used in unit testing.
Show steps
  • Review C# documentation and tutorials.
  • Practice writing simple C# programs.
  • Focus on topics like classes, methods, and inheritance.
Read 'The Art of Unit Testing'
Gain a deeper understanding of unit testing principles and best practices to enhance your ability to write effective tests.
View The Art of Unit Testing, Third Edition on Amazon
Show steps
  • Read the book cover to cover.
  • Pay close attention to the examples and explanations.
  • Try implementing the concepts in your own projects.
NUnit Assertion Exercises
Reinforce your understanding of NUnit assertions by completing a series of targeted exercises.
Show steps
  • Create a new C# project with NUnit installed.
  • Write unit tests using various NUnit assertions.
  • Focus on different data types and scenarios.
  • Debug and fix any failing tests.
Four other activities
Expand to see all activities and additional details
Show all seven activities
Read 'Working Effectively with Legacy Code'
Learn techniques for writing unit tests for legacy code, a crucial skill for maintaining and improving existing codebases.
View Brutal Refactoring on Amazon
Show steps
  • Read the book cover to cover.
  • Focus on the techniques for breaking dependencies.
  • Apply the techniques to a legacy code project.
Blog Post: My Unit Testing Journey
Reflect on your learning experience and share your insights on unit testing with others.
Show steps
  • Outline the key topics you want to cover.
  • Write a clear and concise blog post.
  • Include code examples and personal anecdotes.
  • Proofread and edit your post before publishing.
Help others with Unit Testing
Reinforce your understanding of unit testing by helping other students with their questions and challenges.
Show steps
  • Participate in online forums and discussion groups.
  • Answer questions related to unit testing and NUnit.
  • Share your knowledge and experience with others.
Unit Test an Existing Project
Apply your unit testing skills to a real-world project to gain practical experience.
Show steps
  • Choose an existing C# project to work on.
  • Identify the key components to unit test.
  • Write unit tests using NUnit and MOQ.
  • Refactor the code as needed to improve testability.

Career center

Learners who complete Unit Testing in .NET 9 and C# with NUnit 4.x and MOQ will develop knowledge and skills that may be useful to these careers:
Software Developer
A Software Developer designs, develops, and tests software applications. This course helps developers write robust and reliable code through unit testing. By mastering NUnit and MOQ, a Software Developer can ensure that individual components of their applications function correctly, reducing bugs and improving overall software quality. The course's coverage of Test Driven Development helps them write better code from the start. The discussion of testing legacy code is useful to those who maintain existing applications. The automated creation of unit tests with AI noted as a bonus is a peek into the future.
See salaries and explore the career path for Software Developer
Software Engineer
A Software Engineer applies engineering principles to software creation. This course provides the skills to rigorously test software components. Learning NUnit within this course helps a Software Engineer write effective unit tests. The coverage of Test Driven Development will help a Software Engineer design and implement features with testing in mind. The section on testing legacy code is especially valuable, as Software Engineers often work with existing systems. This course will teach the Software Engineer to ensure code reliability and maintainability.
See salaries and explore the career path for Software Engineer
Test Automation Engineer
A Test Automation Engineer automates software testing processes. This course on unit testing helps build a foundation for that automation. The Test Automation Engineer will use NUnit and MOQ taught in this course to automate unit tests, ensuring consistent and reliable testing. Test Driven Development discussed in this course helps them design automated tests effectively. The material on testing legacy code will equip the Test Automation Engineer to handle existing codebases.
See salaries and explore the career path for Test Automation Engineer
Application Developer
An Application Developer builds and maintains software applications. This course provides skills for writing high-quality code. Learning NUnit within this course helps an Application Developer create unit tests to verify code functionality. The principles of Test Driven Development covered will improve their development workflow. The Application Developer will find the section on testing legacy code useful when working with existing applications. Application Developers can use techniques from this course to ensure their code is reliable and maintainable.
See salaries and explore the career path for Application Developer
Quality Assurance Engineer
A Quality Assurance Engineer is responsible for ensuring the quality of software products. With the techniques taught in this course, the Quality Assurance Engineer can help ensure software quality. This course helps the Quality Assurance Engineer understand the importance of unit testing. By mastering NUnit and MOQ, they will be able to implement robust testing strategies. The lessons on Test Driven Development allow the Quality Assurance Engineer to be involved from the beginning. The Quality Assurance Engineer can help ensure that an organizations's products are defect-free.
See salaries and explore the career path for Quality Assurance Engineer
Full-Stack Developer
A Full Stack Developer works on both the front-end and back-end of applications. This course will help the Full Stack Developer create robust and reliable code. Learning to use NUnit and MOQ, the Full Stack Developer can ensure that both front-end and back-end components function correctly. The Test Driven Development discussion covered helps them write better code from the start. Being adept at testing legacy code will be useful for maintaining and improving existing applications. The Full Stack Developer will create higher quality applications.
See salaries and explore the career path for Full-Stack Developer
Software Development Engineer in Test
A Software Development Engineer in Test or SDET, is responsible for designing and implementing testing strategies. This course provides the SDET with the tools needed to develop effective unit tests. By learning NUnit and MOQ, an SDET can create comprehensive test suites. Understanding Test Driven Development allows the SDET to integrate testing early in the software development lifecycle. The SDET will find that mastering testing legacy code will be particularly useful.
See salaries and explore the career path for Software Development Engineer in Test
Backend Developer
A Backend Developer focuses on the server-side logic and databases of applications. This course helps ensure the reliability of backend code through unit testing. A Backend Developer uses this course to learn NUnit and MOQ to write effective tests for backend components. The knowledge of Test Driven Development in the .NET environment covered in this course allows them to design robust backend systems. The skills learned in testing legacy code allow them to maintain and improve existing backend systems.
See salaries and explore the career path for Backend Developer
DevOps Engineer
A DevOps Engineer automates and streamlines the software development lifecycle. This course will teach skills that help ensure code quality and reliability. A DevOps Engineer integrates unit testing into continuous integration pipelines. Learning to use NUnit in this course, they can automate the execution of unit tests. The knowledge of Test Driven Development allows them to promote a culture of testing. The lessons on testing legacy code helps them maintain the quality of existing systems. The DevOps Engineer will learn software release strategies.
See salaries and explore the career path for DevOps Engineer
Software Architect
A Software Architect designs the structure and components of software systems. While this role typically requires a master's degree or PhD, this course helps them ensure that their designs are testable and maintainable. The Software Architect guides development teams in implementing unit testing strategies. By understanding NUnit and MOQ, the Software Architect can make informed decisions about testing frameworks. The knowledge of Test Driven Development will help them promote best practices. The Software Architect's system designs will be of higher quality and more likely to succeed.
See salaries and explore the career path for Software Architect
Technical Lead
A Technical Lead guides and mentors development teams. This course may help a Technical Lead promote best practices in unit testing. By learning NUnit and MOQ, the Technical Lead can provide guidance on testing methodologies. Understanding Test Driven Development may helps them lead by example. The Technical Lead will be prepared to guide teams in writing effective unit tests. They will also learn to ensure code quality across projects using the techniques taught in this course.
See salaries and explore the career path for Technical Lead
Software Consultant
A Software Consultant advises organizations on software development practices. This course may help the Software Consultant recommend and implement unit testing strategies. By learning NUnit and MOQ, the Software Consultant can assess and improve existing testing processes. Knowledge of Test Driven Development may help them guide organizations in adopting more effective development methodologies. The Software Consultant will be a greater asset.
See salaries and explore the career path for Software Consultant
Data Engineer
A Data Engineer builds and maintains data pipelines and infrastructure. This course may help a Data Engineer apply unit testing principles to data-related code. Learning NUnit and MOQ, the Data Engineer can test data transformations and ETL processes. The knowledge of Test Driven Development may help them design more robust data pipelines. The Data Engineer will now ensure data quality and reliability.
See salaries and explore the career path for Data Engineer
Machine Learning Engineer
A Machine Learning Engineer develops and deploys machine learning models. This course may help the Machine Learning Engineer apply unit testing to machine learning code. Learning NUnit and MOQ, the Machine Learning Engineer can test model inputs, outputs, and training processes. Understanding Test Driven Development may help them design more robust and reliable machine learning systems. The Machine Learning Engineer will create models that are more likely to be successful.
See salaries and explore the career path for Machine Learning Engineer
Database Administrator
A Database Administrator manages and maintains databases. This course may help the Database Administrator write unit tests for database code. Learning NUnit and MOQ, the Database Administrator can test stored procedures, triggers, and other database components. The knowledge of Test Driven Development may help them design more robust database schemas. The Database Administrator will be more skilled.
See salaries and explore the career path for Database Administrator

Reading list

We've selected two books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Unit Testing in .NET 9 and C# with NUnit 4.x and MOQ.
Cover image
The Art of Unit Testing, Third Edition
Save
Provides a comprehensive guide to unit testing principles and practices. It covers topics such as test-driven development, mocking, and working with legacy code. It offers practical examples and advice that complement the course material. This book is highly recommended for anyone serious about improving their unit testing skills.
The Art of Unit Testing, Third Edition
Paperback
Check
The Art of Unit Testing, Third Edition
Kindle Edition
Check
Brutal Refactoring
Save
Provides strategies for testing and refactoring legacy code. It introduces techniques for breaking dependencies and writing unit tests for code that was not originally designed for testing. This book is particularly useful for developers who need to maintain and improve existing codebases. It complements the course's section on testing legacy code.
Brutal Refactoring
Paperback
Check
Brutal Refactoring
Kindle Edition
Check

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Effort
3 total hours
Via
Udemy
Instructor
Aref Karimi
Language
English
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