Despite the name, WebApplicationFactory is not MVC-specific — it works with any ASP.NET Core app (Minimal APIs, Web API, MVC, Razor Pages). The "Mvc" in Microsoft.AspNetCore.Mvc.Testing is just historical baggage from before Minimal APIs existed. It's the standard integration testing host for the whole ASP.NET Core ecosystem. As for having it as a lib dependency: since KiwiQuery.EFCore is explicitly a testing library, pulling in a testing package is expected.