(B) Add architecture tests

Clinics.Backend/ArchitectureTests/ArchitectureTests.cs

+using FluentAssertions;
+using NetArchTest.Rules;
+using Xunit;
+
+namespace ArchitectureTests;
+
+public class ArchitectureTests
+{
+    private const string DomainNamespace = "Domain";
+    private const string ApplicationNamespace = "Application";
+    private const string InfrastructureNamespace = "Infrastructure";
+    private const string PersistenceNamespace = "Persistence";
+    private const string PresentationNamespace = "Presenttation";
+
+    private const string APINamespace = "API";
+
+
+    // Use this naming convension
+    // .._Should_[Not]_...()
+    [Fact]
+    public void Domain_Should_Not_HaveDependencyOnOtherProjects()
+    {
+        #region Arrange
+        var assembly = Domain.AssemblyReference.Assembly;
+
+        var otherProjects = new[]
+        {
+            ApplicationNamespace,
+            InfrastructureNamespace,
+            PersistenceNamespace,
+            PresentationNamespace,
+
+            APINamespace
+        };
+        #endregion
+
+        #region Act
+        var testResult = Types
+            .InAssembly(assembly)
+            .ShouldNot()
+            .HaveDependencyOnAll(otherProjects)
+            .GetResult();
+        #endregion
+
+        #region Assert
+        testResult.IsSuccessful.Should().BeTrue();
+        #endregion
+    }
+
+
+    [Fact]
+    public void Application_Should_Not_HaveDependencyOnOtherProjects()
+    {
+        #region Arrange
+        var assembly = Application.AssemblyReference.Assembly;
+
+        var otherProjects = new[]
+        {
+            InfrastructureNamespace,
+            PersistenceNamespace,
+            PresentationNamespace,
+
+            APINamespace
+        };
+        #endregion
+
+        #region Act
+        var testResult = Types
+            .InAssembly(assembly)
+            .ShouldNot()
+            .HaveDependencyOnAll(otherProjects)
+            .GetResult();
+        #endregion
+
+        #region Assert
+        testResult.IsSuccessful.Should().BeTrue();
+        #endregion
+    }
+
+
+    [Fact]
+    public void Infrastructure_Should_Not_HaveDependencyOnPresentation()
+    {
+        #region Arrange
+        var assembly = Infrastructure.AssemblyReference.Assembly;
+
+        var otherProjects = new[]
+        {
+            PersistenceNamespace,
+            PresentationNamespace,
+
+            APINamespace
+        };
+        #endregion
+
+        #region Act
+        var testResult = Types
+            .InAssembly(assembly)
+            .ShouldNot()
+            .HaveDependencyOnAll(otherProjects)
+            .GetResult();
+        #endregion
+
+        #region Assert
+        testResult.IsSuccessful.Should().BeTrue();
+        #endregion
+    }
+
+    [Fact]
+    public void Persistence_Should_Not_HaveDependencyOnPresentation()
+    {
+        #region Arrange
+        var assembly = Persistence.AssemblyReference.Assembly;
+
+        var otherProjects = new[]
+        {
+            InfrastructureNamespace,
+            PresentationNamespace,
+
+            APINamespace
+        };
+        #endregion
+
+        #region Act
+        var testResult = Types
+            .InAssembly(assembly)
+            .ShouldNot()
+            .HaveDependencyOnAll(otherProjects)
+            .GetResult();
+        #endregion
+
+        #region Assert
+        testResult.IsSuccessful.Should().BeTrue();
+        #endregion
+    }
+
+
+    [Fact]
+    public void Presentation_Should_Not_HaveDependencyOnInfrastructure()
+    {
+        #region Arrange
+        var assembly = Presentation.AssemblyReference.Assembly;
+
+        var otherProjects = new[]
+        {
+            InfrastructureNamespace,
+            PersistenceNamespace,
+
+            APINamespace
+        };
+        #endregion
+
+        #region Act
+        var testResult = Types
+            .InAssembly(assembly)
+            .ShouldNot()
+            .HaveDependencyOnAll(otherProjects)
+            .GetResult();
+        #endregion
+
+        #region Assert
+        testResult.IsSuccessful.Should().BeTrue();
+        #endregion
+    }
+
+
+}
+

Clinics.Backend/ArchitectureTests/ArchitectureTests.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<TargetFramework>net8.0</TargetFramework>
+		<ImplicitUsings>enable</ImplicitUsings>
+		<Nullable>enable</Nullable>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<PackageReference Include="FluentAssertions" Version="6.12.0" />
+		<PackageReference Include="NetArchTest.Rules" Version="1.3.2" />
+		<PackageReference Include="xunit" Version="2.9.0" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.0" />
+		<PackageReference Include="xunit.extensibility.core" Version="2.9.0" />
+		<PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
+			<PrivateAssets>all</PrivateAssets>
+			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+		</PackageReference>
+
+		</ItemGroup>
+
+	<ItemGroup>
+		<ProjectReference Include="..\API\API.csproj" />
+		<ProjectReference Include="..\Application\Application.csproj" />
+		<ProjectReference Include="..\Domain\Domain.csproj" />
+		<ProjectReference Include="..\Infrastructure\Infrastructure.csproj" />
+		<ProjectReference Include="..\Persistence\Persistence.csproj" />
+		<ProjectReference Include="..\Presentation\Presentation.csproj" />
+	</ItemGroup>
+
+</Project>

Clinics.Backend/Clinics.Backend.sln

@@ -21,7 +21,11 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Persistence", "Persistence\
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "API", "API\API.csproj", "{15B2AA13-EBBD-408B-A4B3-4BAB43D74267}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Infrastructure", "Infrastructure\Infrastructure.csproj", "{4EB41743-695F-4822-87F6-E6F9B48A8E6B}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Infrastructure", "Infrastructure\Infrastructure.csproj", "{4EB41743-695F-4822-87F6-E6F9B48A8E6B}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Tests", "Tests", "{05E390C6-AFE5-42FB-A3E2-CEEE1E6A75EE}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ArchitectureTests", "ArchitectureTests\ArchitectureTests.csproj", "{07C6D0DB-7181-4E6F-9BC1-863FCDAD9490}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -53,6 +57,10 @@ Global
 		{4EB41743-695F-4822-87F6-E6F9B48A8E6B}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{4EB41743-695F-4822-87F6-E6F9B48A8E6B}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{4EB41743-695F-4822-87F6-E6F9B48A8E6B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{07C6D0DB-7181-4E6F-9BC1-863FCDAD9490}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{07C6D0DB-7181-4E6F-9BC1-863FCDAD9490}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{07C6D0DB-7181-4E6F-9BC1-863FCDAD9490}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{07C6D0DB-7181-4E6F-9BC1-863FCDAD9490}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -66,6 +74,7 @@ Global
 		{D04C0D6C-3FC9-4359-A017-DFCFA1475639} = {878AE2C9-3E34-4332-ACC0-E6B601085710}
 		{2B5111ED-7AB8-46E2-90F8-AF0C70265618} = {FDA56BCD-A53D-4BA1-A59D-3F44FA32DDD7}
 		{4EB41743-695F-4822-87F6-E6F9B48A8E6B} = {FDA56BCD-A53D-4BA1-A59D-3F44FA32DDD7}
+		{07C6D0DB-7181-4E6F-9BC1-863FCDAD9490} = {05E390C6-AFE5-42FB-A3E2-CEEE1E6A75EE}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {E9FC9252-1283-485F-8F84-3574CFA12633}

Clinics.Backend/Domain/AssemblyReference.cs

+using System.Reflection;
+
+namespace Domain;
+
+public class AssemblyReference
+{
+    public static readonly Assembly Assembly = typeof(AssemblyReference).Assembly;
+
+}