Blog

Mert Özen's blog posts on software development, backend, frontend, and DevOps.

Series

Integration Testing an ASP.NET Core Web API: End-to-End Tests with WebApplicationFactory

We spin up an ASP.NET Core Web API in memory with WebApplicationFactory and test it at the HTTP level: public partial class Program, swapping the database for in-memory SQLite, Location and ProblemDetails tests, and test isolation.

4 Nov 2026 9 min 2

Backend PART 29

Unit Testing an ASP.NET Core Web API: Service and Controller Tests with xUnit and Moq

Unit testing an ASP.NET Core Web API with xUnit and Moq: the right package versions for net6.0, AAA and naming, Setup and Verify, the Result/Value difference in ActionResult<T> tests, Theory, and a comparison with NSubstitute.

4 Nov 2026 11 min 3