Gain insights into using xUnit for TDD in .NET. Delve into fundamentals, advanced topics, mocking, the testing pyramid, and integration tests to develop high-quality software.

Test Driven development on .net and xunit.png

xunit.tar.gz

Basic Tests

Unit/Integration Tests

End-to-end Tests

Basic Tests with coverage

Unit/Integration Tests with coverage

Test-driven development (TDD) is a proven way of developing high-quality applications with clean and well-maintainable code. In this course, you will learn how to use the xUnit testing library to apply the principles of test-driven development on .NET.

You will start this course by reviewing the fundamentals of xUnit and how automated testing works on .NET. Then, you will practice the key TDD fundamentals. After this, you will move to more advanced topics, such as mocking, understanding the testing pyramid, running integration tests against hosted apps, etc.

By the end of the course, you will have learned how to develop high-quality software by following the TDD principles. You will also have learned how to use xUnit to write any automated tests supported by .NET.

Using xUnit for Test-Driven Development in .NET

**(Select all that apply.)** Which techniques can you use to emulate an external service dependency? 

(Select all that apply.) Which techniques can you use to emulate an external service dependency?

When having to set up the behavior of the methods for each test scenario

When you don't care about the exact behavior of the dependencies and only want to ensure that they work

When verifying invocations of the internal dependency methods

When testing interactions of the code under test with its dependencies

**(Select all that apply.)** In which situations is mocking more appropriate than stubbing? 

(Select all that apply.) In which situations is mocking more appropriate than stubbing?

**(Select all that apply.)** What are the advantages of using the `Moq` library over the `NSubstitute` library? 

(Select all that apply.) What are the advantages of using the <code>Moq</code> library over the <code>NSubstitute</code> library?

The ability to set up and verify invocations of methods for any parameter values in one statement

**(Select all that apply.)** What are the advantages of using the `NSubstitute` library over the `Moq` library? 

(Select all that apply.) What are the advantages of using the <code>NSubstitute</code> library over the <code>Moq</code> library?

Making code of a microservice execute much faster

Emulating database interactions in unit tests

Emulating database interactions in E2E, integration, or unit tests

What is the most valid use case for an in-memory database?

What is the most valid use case for an in-memory database?

Test your knowledge of mocking, stubbing, and faking.

Introduction to Automated Testing

Test-Driven Development

Assertions as a Key Part of Automated Tests

Different Types of Automated Tests

Mocking External Dependencies

Working with Code Coverage Metrics

Summary

Appendix

Quiz: Mocking, Stubbing, and Faking