The Complete Guide to Functional Testing in ASP.NET Core (End-to-End Testing)

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Functional testing is a testing approach that tests your system functionality from a client's perspective. It's also called End-to-End (E2E) testing. In a typical ASP.NET Core APi, functional testing involves calling the API endpoints. You also want to use real external service to make your tests mimic a production environment. Docker is an excellent tool for creating throwaway databases for your functional tests. And you can make it even better with the Testconatiners library. It allows you to create throwaway docker containers for functional testing. I'll show you how to implement functional testing in this video.

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Chapters
0:00 What are Functional Tests?
1:46 Installing TestContainers and Testing packages
2:30 Creating a custom WebApplicationFactory
6:08 Class fixture to share context between tests
6:56 Writing Functional Tests in ASP.NET Core