public void When_Selling_Amount_As_Of_1Feb2018_Should_Be_31_5408000THB()
        {
            HttpClient _client       = new HttpClient();
            BotService botService    = new BotService(_client);
            double     actualSelling = botService.GetSellingAverageDay("2018-02-01");

            Assert.Equal(31.5408000, actualSelling);
        }