Asserting EF Core query counts alongside Testcontainers

[KiwiDevelopment]

Testcontainers gives you a real database in tests — which is great. But one thing I kept missing was a way to assert how many queries were executed during a test, not just that the result is correct.
I built a small library for this: KiwiQuery.EFCore.

await using var guard = factory.TrackQueries<Program, AppDbContext>();
var client = guard.CreateClient();

await client.GetAsync("/api/orders");

guard.AssertCount(exact: 1); // fails if N+1 sneaks in

It wraps DbCommandInterceptor so you don't have to write the boilerplate. Works naturally with Testcontainers since you're already hitting a real DB — the interceptor just counts what goes through.

Repo: https://github.com/KiwiDevelopment/KiwiQuery, NuGet: KiwiQuery.EFCore. MIT, one dependency.
Curious if others have solved this differently or if there's interest in this pattern.