public void CorrectRequestForGetAction() { var factory = Substitute.For<IConnection>(); var client = new ImageActionsClient(factory); client.GetAction(9001, 1009); var parameters = Arg.Is<List<Parameter>>(list => (int)list[0].Value == 9001 && (int)list[1].Value == 1009); factory.Received().ExecuteRequest<Models.Responses.Action>("images/{imageId}/actions/{actionId}", parameters, null, "action"); }