Introduction

In this article, we are discussing What is Unit Testing? Any Development process minimum production bug is a real requirement or it is important to work for any developer. Generally, unit testing is done by the developer to check developed code is working properly and the actual expected result.

Software Testing is a real challenge for the tester as well as the Developer. Unit Testing is the post-process of development. To learn good Unit Test cases firstly we learn what is unit testing, why need unit testing after that we learn Different frameworks to write unit test cases.

what is unit testing in c#

In simple words, a Unit Test is a function that tests a unit of work. As per the coding perspective, the unit test is a small block of code or a small piece of code. In most of the cases in one class, there are multiple methods so that checking that method result matches with the actual expected result.

Unit Test is done by the developer.

The main objective of unit testing is increasing correctness and reliability. During development, developers have some criteria to maintain correctness. Checking that correctness nothing but Unit Testing.

5 importance of unit testing in c# visual studio 2019

One of the most valuable or important benefits of unit testing is it giving confidence and certainty the code will work as expected. After the unit testing, it's working for long-term benefit.

The benefit of unit testing.

Easy to automate.
Development becomes faster.
Code is clean, reusable.
Easy to maintaining code during development.
Unit Testing always has the ability to find bugs in the early stages in the development life cycle.

Frameworks used for writing unit tests.

1.MSTest

In the programming world, unit testing is very important to deliver the best software product. Unit testing is done by the individual developers and checks the correctness of the product. MSTest is the most favorable testing framework cause not require installing a third-party framework.

MSTest is used to run any unit test cases. You can run the test graphically as well as by using the command prompt.NameSpace for MSTest is Microsoft.VisualStudio.TestTools.UnitTesting

The basic structure to write MSTest Case.

Creating first Unit Test please check here

2.Nunit

Nunit is an open-source testing framework that is compatible with all .net Languages. Nunit framework was released by MIT. Every framework has pros and cons but Nunit is best as per user capability.

Nunit is a third-party framework so that you need to install through Nuget Package Manager. The Latest Version of Nunit is 3.13.1.

3.Xunit

Xunit testing framework is open-source supported to all .net languages. Xunit framework is the third party so that adding by Nuget package manager. Xunit is the latest technology for unit testing c# works with Resharper,xamarin, CodeRush.

Want to learn more about mstest by Microsoft

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MSTest Unit Testing Tutorial