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Using xUnit for Test-Driven Development in .NET

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.

Beginner

51 Lessons

11h

Certificate of Completion

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.

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This course includes

37 Playgrounds

6 Quizzes

Course Overview

What You'll Learn

Course Content

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Course Overview

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...Show More

What You'll Learn

Familiarity with the principles of test-driven development

The ability to write automated tests in .NET using xUnit

An understanding of unit and integration tests

Familiarity with testing best practices

An understanding of the test pyramid to produce bug-free software

Familiarity with the principles of test-driven development

Course Content

Introduction to Automated Testing

8 Lessons

Get familiar with xUnit, its setup, test creation, parametric testing, and test automation principles in .NET.

Getting Started

Introduction to Automated Testing

Introduction to xUnit

Parametrized vs. Nonparametrized Tests

The Importance of Setup and Teardown

Quiz: Introduction to Automated Tests

Challenge: Adding an Automated Test

Solution Review: Adding an Automated Test

Test-Driven Development

8 Lessons

Discover the logic behind TDD stages, benefits, challenges, and an application example.

The Advantages and Disadvantages of TDD

The Three Stages of TDD: Red, Green, and Refactor

The Red Stage: Writing the Initial Tests

The Green Stage: Making the Tests Pass

The Refactor Stage: Cleaning Up the Code

Quiz: TDD

Challenge: Applying TDD

Solution Review: Applying TDD

Assertions as a Key Part of Automated Tests

9 Lessons

Examine key assertion methods and libraries in xUnit to enhance automated test readability.

Introduction to Assertions

Assertion Types Supported by xUnit

Using Fluent Assertions to Improve Readability

Assertion Methods Available in Fluent Assertions

Using Shouldly to Improve Readability

Assertion Methods Available in Shouldly

Quiz Yourself on Automated Test Assertions

Challenge: Converting xUnit Assertions to Fluent Assertions

Solution Review: Converting xUnit Assertions to Fluent Assertions

Different Types of Automated Tests

7 Lessons

Grasp the fundamentals of automated test types and their applications in Test-Driven Development.

Introduction to Testing Pyramids

Unit Tests and Where to Use Them

Integration Tests and Where to Use Them

End-to-End Tests and Where to Use Them

Quiz: Different Types of Automated Tests

Challenge: Applying an Integration Test

Solution Review: Applying an Integration Test

Mocking External Dependencies

8 Lessons

Solve problems in mocking and stubbing external dependencies for isolated unit testing.

Introduction to Mocking

Introduction to Stubbing

Using the Moq Library for Mocking

Using the NSubstitute Library for Mocking

Faking Database Interactions with Entity Framework Core

Quiz: Mocking, Stubbing, and Faking

Challenge: Mocking an External Service

Solution Review: Mocking an External Service

Working with Code Coverage Metrics

6 Lessons

Follow the process of evaluating and enhancing code coverage metrics through meaningful tests.

What Is Code Coverage and Why Is It Important?

How Is Code Coverage Assessed?

Optimizing Coverage in Unit Tests

Quiz: Code Coverage

Challenge: Improving Code Coverage Metrics

Solution Review: Improving Code Coverage Metrics

Summary

2 Lessons

Build on applying TDD principles with xUnit for comprehensive automated testing in .NET.

Wrapping Up

Closing Thoughts

Appendix

3 Lessons

Get familiar with setting up a .NET environment, IDE test execution, and CLI testing.

Setting Up a Local Environment

Running Tests from an IDE

Running Tests from the Command Line

Course Author

Fiodar Sazanavets

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