using NATS.Server.TestUtilities; namespace NATS.Server.JetStream.Tests; public class JetStreamApiRouterTests { [Fact] public async Task Unknown_js_api_subject_returns_structured_error() { var response = await JetStreamApiFixture.RequestAsync("$JS.API.BAD", "{}"); response.Error.ShouldNotBeNull(); response.Error!.Code.ShouldBe(404); } }