Adding unit test

drinkMe.Server.Tests/ControllerTests/DrinksControllerTest.cs

@@ -0,0 +1,149 @@
+using collAnon.Pub.Shared;
+using drinkMe.Server.Controllers;
+using drinkMe.Server.Services.Interfaces;
+using drinkMe.Shared;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace drinkMe.Server.Tests
+{
+	public class DrinksControllerTest
+	{
+		readonly IDataService DataService;
+		readonly IPaymentService PaymentService;
+
+		public DrinksControllerTest(IDataService dataService, IPaymentService paymentService)
+		{
+			DataService = dataService;
+			PaymentService = paymentService;
+		}
+
+		[Theory]
+		[InlineData("D1AMOND_HANDS")]
+		public async Task IsValidDiscountCode_Test_DiscountFound(string code)
+		{
+			var controller = new DrinksController(DataService, PaymentService);
+			Assert.NotNull(controller);
+			var result = await controller.IsValidDiscountCode(code);
+			Assert.NotNull(result);
+			Assert.IsType<OkObjectResult>(result);
+			var okResult = result as OkObjectResult;
+			Assert.NotNull(okResult.Value);
+			Assert.Equal(okResult.StatusCode, StatusCodes.Status200OK);
+			Assert.IsType<DiscountCodeViewModel>(okResult.Value);
+			var discountCodeData = okResult.Value as DiscountCodeViewModel;
+			Assert.Equal(discountCodeData.Code, code);
+		}
+
+		[Theory]
+		[InlineData("NOT_MY_D4Y")]
+		public async Task IsValidDiscountCode_Test_DiscountNotFound(string code)
+		{
+			var controller = new DrinksController(DataService, PaymentService);
+			Assert.NotNull(controller);
+			var result = await controller.IsValidDiscountCode(code);
+			Assert.NotNull(result);
+			Assert.IsType<ObjectResult>(result);
+			var objectResult = result as ObjectResult;
+			Assert.NotNull(objectResult.Value);
+			Assert.Equal(objectResult.StatusCode, StatusCodes.Status404NotFound);
+			Assert.IsType<WebResult>(objectResult.Value);
+			var webResult = objectResult.Value as WebResult;
+			Assert.False(webResult.IsValid);
+			Assert.Equal(webResult.StatusCode, StatusCodes.Status404NotFound);
+		}
+
+		[Fact]
+		public async Task GetDrinks_Test_NotEmpty()
+		{
+			var controller = new DrinksController(DataService, PaymentService);
+			Assert.NotNull(controller);
+			var result = await controller.GetDrinks();
+			Assert.NotNull(result);
+			Assert.IsType<OkObjectResult>(result);
+			var okResult = result as OkObjectResult;
+			Assert.NotNull(okResult.Value);
+			Assert.Equal(okResult.StatusCode, StatusCodes.Status200OK);
+			Assert.IsType<DrinkViewModel[]>(okResult.Value);
+			var drinks = okResult.Value as DrinkViewModel[];
+			Assert.NotEmpty(drinks);
+		}
+
+		[Fact]
+		public async Task Pay_Test_WithSuccess()
+		{
+			var purchaseCart = new PurchaseCart
+			{
+				IsPayedWithCash = true,
+				PurchasingItems = new List<CartItem>
+				{
+					new CartItem
+					{
+						 Id = 1,
+						Quantity = 1
+					}
+				}
+			};
+			var controller = new DrinksController(DataService, PaymentService);
+			Assert.NotNull(controller);
+			var result = await controller.Pay(purchaseCart);
+			Assert.NotNull(result);
+			Assert.IsType<OkResult>(result);
+			var okResult = result as OkResult;
+			Assert.Equal(okResult.StatusCode, StatusCodes.Status200OK);
+		}
+
+		[Fact]
+		public async Task Pay_Test_WithSuccess2()
+		{
+			var purchaseCart = new PurchaseCart
+			{
+				IsPayedWithCash = false,
+				CreditCardNumber = "4000123412341234",
+				CreditCardExpirationYear = "22",
+				CreditCardCVVCode = "333",
+				CreditCardExpirationMonth = "01",
+				PurchasingItems = new List<CartItem>
+				{
+					new CartItem
+					{
+						 Id = 1,
+						Quantity = 1
+					}
+				}
+			};
+			var controller = new DrinksController(DataService, PaymentService);
+			Assert.NotNull(controller);
+			var result = await controller.Pay(purchaseCart);
+			Assert.NotNull(result);
+			Assert.IsType<OkResult>(result);
+			var okResult = result as OkResult;
+			Assert.Equal(okResult.StatusCode, StatusCodes.Status200OK);
+		}
+
+		[Fact]
+		public async Task Pay_Test_WithoutSuccess()
+		{
+			var purchaseCart = new PurchaseCart
+			{
+				IsPayedWithCash = false
+			};
+			var controller = new DrinksController(DataService, PaymentService);
+			Assert.NotNull(controller);
+			var result = await controller.Pay(purchaseCart);
+			Assert.NotNull(result);
+			Assert.IsType<BadRequestObjectResult>(result);
+			var badResult = result as BadRequestObjectResult;
+			Assert.NotNull(badResult.Value);
+			Assert.IsType<WebResult>(badResult.Value);
+			Assert.Equal(badResult.StatusCode, StatusCodes.Status400BadRequest);
+			var webResult = badResult.Value as WebResult;
+			Assert.False(webResult.IsValid);
+			Assert.Equal(webResult.StatusCode, StatusCodes.Status400BadRequest);
+		}
+	}
+}

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>();
+		}
+	}
+}

drinkMe.Server.Tests/drinkMe.Server.Tests.csproj

@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net5.0</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.4" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="Xunit.DependencyInjection" Version="7.2.0" />
+    <PackageReference Include="xunit.extensibility.core" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="coverlet.collector" Version="3.0.3">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\drinkMe\Server\drinkMe.Server.csproj" />
+  </ItemGroup>
+
+</Project>

drinkMe.sln

@@ -13,6 +13,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "drinkMe.Client.Models", "dr
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "drinkMe.Server.Models", "drinkMe\drinkMe.Server.Models\drinkMe.Server.Models.csproj", "{EC73DC9D-FD40-4505-989D-83B49018401D}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "drinkMe.Server.Tests", "drinkMe.Server.Tests\drinkMe.Server.Tests.csproj", "{A8EAD5E1-209A-4E0E-A31E-BD3C3235C8E5}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -39,6 +41,10 @@ Global
 		{EC73DC9D-FD40-4505-989D-83B49018401D}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{EC73DC9D-FD40-4505-989D-83B49018401D}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{EC73DC9D-FD40-4505-989D-83B49018401D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A8EAD5E1-209A-4E0E-A31E-BD3C3235C8E5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A8EAD5E1-209A-4E0E-A31E-BD3C3235C8E5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A8EAD5E1-209A-4E0E-A31E-BD3C3235C8E5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A8EAD5E1-209A-4E0E-A31E-BD3C3235C8E5}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

drinkMe/Server/Services/PaymentService.cs

@@ -11,6 +11,13 @@ namespace drinkMe.Server.Services
 	{
 		public async Task<bool> Pay(PurchaseCart purchaseCart)
 		{
+			if (!purchaseCart.IsPayedWithCash &&
+				(purchaseCart.CreditCardNumber is { Length: 0 } || purchaseCart.CreditCardExpirationYear is { Length: 0 } ||
+				purchaseCart.CreditCardExpirationMonth is { Length: 0 } || purchaseCart.CreditCardCVVCode is { Length: 0 }))
+				return false;
+
+			if (purchaseCart.PurchasingItems.Count == 0)
+				return false;
 			//completing the purchase
 			return true;
 		}