public async Task Should_Return_Senders()
    {
      // Setup
      string apiKey = ConfigurationManager.AppSettings["APIKey"];

      // Exercise
      var api = new MandrillApi(apiKey);

      // Verify
      List<Sender> senders = await api.ListSenders();

      Assert.IsNotNull(senders);
    }
        public async Task Should_Return_Senders()
        {
            // Setup
            string apiKey = ConfigurationManager.AppSettings["APIKey"];

            // Exercise
            var api = new MandrillApi(apiKey);

            // Verify
            List <Sender> senders = await api.ListSenders();

            Assert.IsNotNull(senders);
        }