Added unit tests

Author: Jennifer Deigendesch

ASPNETCoreExample.sln

@@ -11,6 +11,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ASPNETCoreExample", "src\AS
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataDAL", "DataDAL\DataDAL.csproj", "{5989628F-5FC3-468B-A2A4-4C39E5EA6D2E}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Tests", "Tests\Tests.csproj", "{4A7375F3-CF33-419D-ABC7-F6F7EA02D0DE}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -25,12 +27,17 @@ Global
 		{5989628F-5FC3-468B-A2A4-4C39E5EA6D2E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{5989628F-5FC3-468B-A2A4-4C39E5EA6D2E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{5989628F-5FC3-468B-A2A4-4C39E5EA6D2E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4A7375F3-CF33-419D-ABC7-F6F7EA02D0DE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4A7375F3-CF33-419D-ABC7-F6F7EA02D0DE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4A7375F3-CF33-419D-ABC7-F6F7EA02D0DE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4A7375F3-CF33-419D-ABC7-F6F7EA02D0DE}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{56CF75C7-C267-417C-BCF6-69CEBC0BF27C} = {F7B9D11A-69C3-4AAA-B3B4-DC19B0B53D1D}
 		{5989628F-5FC3-468B-A2A4-4C39E5EA6D2E} = {F7B9D11A-69C3-4AAA-B3B4-DC19B0B53D1D}
+		{4A7375F3-CF33-419D-ABC7-F6F7EA02D0DE} = {F7B9D11A-69C3-4AAA-B3B4-DC19B0B53D1D}
 	EndGlobalSection
 EndGlobal

Tests/RepositoryTests/TestBase.cs

@@ -0,0 +1,56 @@
+namespace Tests.RepositoryTests
+{
+   using System;
+
+   using DataDAL;
+
+   using Microsoft.Data.Sqlite;
+   using Microsoft.EntityFrameworkCore;
+   using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+   public class TestBase
+   {
+      private SqliteConnection connection;
+
+      protected DataDAL Context { get; private set; }
+
+      [TestCleanup]
+
+      // ReSharper disable once UnusedMember.Global, because it's a TestCleanup-method, which must be public.
+      public virtual void CleanUp()
+      {
+         this.connection.Close();
+      }
+
+      [TestInitialize]
+
+      // ReSharper disable once MemberCanBeProtected.Global, because TestInitialize-methods must be public.
+      public virtual void SetUp()
+      {
+         this.connection = CreateConnection();
+         this.connection.Open();
+
+         this.Context = EnsureDatabaseCreated(this.connection);
+      }
+
+      public static SqliteConnection CreateConnection()
+      {
+         // In-memory database only exists while the connection is open
+         var connectionStringBuilder = new SqliteConnectionStringBuilder { DataSource = ":memory:" };
+         return new SqliteConnection(connectionStringBuilder.ToString());
+      }
+
+      public static DataDAL EnsureDatabaseCreated(SqliteConnection connection)
+      {
+         var contextOptions = new DbContextOptionsBuilder<DataDAL>().UseSqlite(connection)
+            .Options;
+
+         // Create the schema in the database if not available
+         var context = (DataDAL)Activator.CreateInstance(typeof(DataDAL), contextOptions);
+         context.Database.OpenConnection();
+         context.Database.EnsureCreated();
+
+         return context;
+      }
+   }
+}

Tests/RepositoryTests/UserRepositoryTests/GetUserTests.cs

@@ -0,0 +1,39 @@
+namespace Tests.RepositoryTests.UserRepositoryTests
+{
+   using System;
+   using System.Threading.Tasks;
+
+   using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+   [TestClass]
+   public class GetUserTests : UserRepositoryTestsBase
+   {
+      [TestMethod]
+      public async Task ShouldReturnSuccessfulWhenUserWithIdAvailable()
+      {
+         // Arrange
+         const string Id = "1";
+         const string Name = "Jennifer";
+         await UserRepositoryUtils.AddUserAsync(this.Context, Id, Name);
+
+         // Test
+         var result = await this.RepositoryUnderTest.GetUserAsync(Id);
+
+         // Assert
+         Assert.IsNotNull(result);
+         Assert.AreEqual(Id, result.Id);
+         Assert.AreEqual(Name, result.Name);
+      }
+
+      [TestMethod]
+      [ExpectedException(typeof(InvalidOperationException))]
+      public async Task ShouldReturnErrorWhenUserWithIdMissing()
+      {
+         // Arrange
+         const string Id = "1";
+
+         // Test
+         await this.RepositoryUnderTest.GetUserAsync(Id);
+      }
+   }
+}

Tests/RepositoryTests/UserRepositoryTests/UserRepositoryTestsBase.cs

@@ -0,0 +1,18 @@
+namespace Tests.RepositoryTests.UserRepositoryTests
+{
+   using AspNetCoreExample.Repositories;
+
+   using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+   public class UserRepositoryTestsBase : TestBase
+   {
+      protected UserRepository RepositoryUnderTest { get; private set; }
+
+      [TestInitialize]
+      public override void SetUp()
+      {
+         base.SetUp();
+         this.RepositoryUnderTest = new UserRepository(this.Context);
+      }
+   }
+}

Tests/RepositoryTests/UserRepositoryTests/UserRepositoryUtils.cs

@@ -0,0 +1,16 @@
+namespace Tests.RepositoryTests.UserRepositoryTests
+{
+   using System.Threading.Tasks;
+
+   using DataDAL;
+   using DataDAL.Tables;
+
+   public static class UserRepositoryUtils
+   {
+      public static async Task AddUserAsync(DataDAL context, string id, string name)
+      {
+         context.User.Add(new User { Id = id, Name = name });
+         await context.SaveChangesAsync();
+      }
+   }
+}

Tests/Tests.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>    
+    <TargetFramework>netcoreapp1.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Data.SQLite" Version="1.1.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="1.1.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />
+    <PackageReference Include="Moq" Version="4.7.9" />
+    <PackageReference Include="MSTest.TestAdapter" Version="1.1.11" />
+    <PackageReference Include="MSTest.TestFramework" Version="1.1.11" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\src\ASPNETCoreExample\ASPNETCoreExample.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
+  </ItemGroup>
+
+</Project>