Introduction to testing in ASP.NET Core

Different types of testing can be performed on an ASP.NET Core web API application, as follows:

• Unit testing: This is the process of testing individual units of code, such as methods and classes, to ensure that they work as expected. Unit tests should be small, fast, and isolated from other units of code. Mocking frameworks can be used to isolate units of code from their dependencies, such as databases and external services.
• Integration testing: This involves testing the integration between different components of the application to ensure that they work together as expected. This type of testing helps to identify issues that may arise when the application is deployed to a production environment. Generally, integration tests are slower than unit tests. Integration tests may use mock objects or real objects, depending on the scenario. For example, if the integration test is to test the integration between the application and a database...