public void CanGetChatMessagesFromExternalChatProviderApi()
        {
            var clientRepository  = new Mock <IRepository <Client> >();
            var chatRepository    = new Mock <IRepository <Contact> >();
            var contactService    = new Mock <IContactService>();
            var restClient        = new Mock <IRestClient>();
            var userManager       = new Mock <IIdentityMembershipProvider>();
            var contactAutoRating = new Mock <IContactAutoRating>();

            var pageNumber = 1;
            var dateFrom   = new DateTime(2014 - 01 - 01);
            var controller = new ChatController(
                chatRepository.Object,
                clientRepository.Object,
                contactService.Object,
                new ServerTime(),
                restClient.Object, userManager.Object, contactAutoRating.Object);

            var responseMessage = new RestResponse();

            responseMessage.Content = "{\"chats\":[{\"text\":\"some text\"}]}";
            restClient.Setup(rc => rc.Execute(It.IsAny <RestRequest>())).Returns(responseMessage);

            var result = controller.ChatMessages(pageNumber, dateFrom) as ContentResult;

            restClient.Verify(rc => rc.Execute(It.Is <RestRequest>(rq => rq.Parameters.Any())), Times.Once);
            Assert.AreEqual("{\"chats\":[{\"text\":\"some text\"}]}", result.Content);
        }