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Unit testing example in C# using MS test in Visual Studio

Reduces Cost, while using Unit testing, we can get the error in the code in the early stage of development, which saves time and reduce code of development.

Unit testing allows software developers to actually think through the design of the software and what has to be done before they write the code.

Provides Documentation: Unit testing helps in creating software documentation, so if any software developer joins your team, he/she can easily understand the system using a Unit test.

Unit Testing helps in easy debugging, if any new test fails, you can easily debug the error in your code.Reusable codes reduce the effort and save time as the code needs to be modular in unit testing.This testing is called "Unit testing" because we break down the application functionality into smaller functions and test them individually, which can be called units. So to make it easier, we write some test cases for individual components of the application, to check if the code is working as needed and giving us expected output with sample values or not, if the test is giving correct output it is marked as "passed" else "failed." There we should have automated tests to run, whenever application functions changes, to check if the working still remains intact or not. If we check each function output of individual components, then it will become a very complex task to check the output of each function for large projects. Software applications are built using various small functions, which are dependent on each other to create a bigger application.

In one of the previous article, we provided Javascript Unit testing frameworks, which are front-end Unit testing framework, but what about back-end C# unit testing, so in this article, I am going to explain what is unit testing and how we can apply unit testing in C# using Visual Studio with a simple example.