public async Task HandleAsync_If_Vehicle_Is_Not_Tracked_Rejection_Event_Not_Published() { // Arrange _trackedVehicleRepository .ExistsAsync(_vehicleId) .Returns(false); // Act await _vehicleDeletedHandler.HandleAsync(_event); // Assert await _busPublisher .DidNotReceive() .PublishAsync(Arg.Any <StopVehicleTrackingRejectedEvent>()); }