public void ASpanAndCallOtherRegisteredEventHandlers() { var tracer = new MockTracer(); var clientSettings = MongoClientSettings.FromConnectionString(_fixture.TestMongoDb.ConnectionString); var testHandler = new EventListenerTestDouble(); clientSettings.ClusterConfigurator = builder => { builder .Subscribe <CommandStartedEvent>(@event => { testHandler.StartEventHandler(); }); }; var mongoClient = new OpenTracing.Contrib.Mongo.TracingMongoClient(tracer, clientSettings); var doughnutCollection = mongoClient.GetDatabase(_fixture.DATABASE_NAME).GetCollection <Doughnut>(_fixture.COLLECTION_NAME); doughnutCollection.InsertOne(new Doughnut { Price = 1, Color = "red" }); var finishedSpan = tracer.FinishedSpans().FirstOrDefault(span => span.OperationName.Equals("mongodb.insert")); finishedSpan.Should().NotBeNull(); testHandler.Counter.Should().BeGreaterOrEqualTo(1); }