You're reading from C# 9 and .NET 5 – Modern Cross-Platform Development Build intelligent apps, websites, and services with Blazor, ASP.NET Core, and Entity Framework Core using Visual Studio Code

Product type Paperback

Published in Nov 2020

Publisher Packt

ISBN-13 9781800568105

Length 822 pages

Edition 5th Edition

Languages

Tools

.NET

Concepts

Cross Platform Mobile Development

Author (1):

Mark J. Price

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Table of Contents (23) Chapters

Preface

1. Hello, C#! Welcome, .NET!

2. Speaking C# FREE CHAPTER

3. Controlling Flow and Converting Types

4. Writing, Debugging, and Testing Functions

5. Building Your Own Types with Object-Oriented Programming

6. Implementing Interfaces and Inheriting Classes

7. Understanding and Packaging .NET Types

8. Working with Common .NET Types

9. Working with Files, Streams, and Serialization

10. Protecting Your Data and Applications

11. Working with Databases Using Entity Framework Core

12. Querying and Manipulating Data Using LINQ

13. Improving Performance and Scalability Using Multitasking

14. Introducing Practical Applications of C# and .NET

15. Building Websites Using ASP.NET Core Razor Pages

16. Building Websites Using the Model-View-Controller Pattern

17. Building Websites Using a Content Management System

18. Building and Consuming Web Services

19. Building Intelligent Apps Using Machine Learning

20. Building Web User Interfaces Using Blazor

21. Building Cross-Platform Mobile Apps

22. Index

Unit testing functions

Fixing bugs in code is expensive. The earlier that a bug is discovered in the development process, the less expensive it will be to fix.

Unit testing is a good way to find bugs early in the development process. Some developers even follow the principle that programmers should create unit tests before they write code, and this is called Test-Driven Development (TDD).

More Information: You can learn more about TDD at the following link: https://en.wikipedia.org/wiki/Test-driven_development

Microsoft has a proprietary unit testing framework known as MS Test; however, we will use the free and open source third-party framework xUnit.net.

Creating a class library that needs testing

First, we will create a function that needs testing. We will create it in a class library project. A class library is a package of code that can be distributed and referenced by other .NET applications: