This article will demonstrate how to write Unit Test Cases for CRUD operations in Asp.Net Core Web API with xUnit project. 

Unit Testing is a software testing approach which perform at the time of the development to test the smallest component of the any software. It means rather then testing the big module in one go, you test the small part of that module. Small component in the sense, it could be any function, any property or any class which is handling the specific functionality.