Adding unit test

drinkMe.Server.Tests/Startup.cs

@@ -0,0 +1,20 @@
+using drinkMe.Server.Services;
+using drinkMe.Server.Services.Interfaces;
+using Microsoft.Extensions.DependencyInjection;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace drinkMe.Server.Tests
+{
+	public class Startup
+	{
+		public void ConfigureServices(IServiceCollection services)
+		{
+			services.AddScoped<IDataService, DataService>()
+				.AddScoped<IPaymentService, PaymentService>();
+		}
+	}
+}