From 5655d31d65b2bc9af73f645fbed306a49dfd21a2 Mon Sep 17 00:00:00 2001
From: Christian Brevik <christian.brevik@gmail.com>
Date: Sun, 13 Oct 2024 20:04:49 +0200
Subject: [PATCH] chore: Add basic test for clean architecture

---
 Dotnet.Template.sln                   |  7 ++++
 tests/Core.Tests/ArchitectureTests.cs | 60 +++++++++++++++++++++++++++
 tests/Core.Tests/Core.Tests.csproj    | 29 +++++++++++++
 3 files changed, 96 insertions(+)
 create mode 100644 tests/Core.Tests/ArchitectureTests.cs
 create mode 100644 tests/Core.Tests/Core.Tests.csproj

diff --git a/Dotnet.Template.sln b/Dotnet.Template.sln
index e8dcd07..3d8591f 100644
--- a/Dotnet.Template.sln
+++ b/Dotnet.Template.sln
@@ -23,6 +23,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Core", "Core", "{A26AADFF-6
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Infrastructure", "Infrastructure", "{1FB1E6F9-7773-45D5-B81A-17FB35551D3C}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Core.Tests", "tests\Core.Tests\Core.Tests.csproj", "{41513BF9-E555-48D2-8EE5-517CA1F225E8}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -52,6 +54,10 @@ Global
 		{67BE9569-2A93-4FB3-8181-9D99F5BF85F4}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{67BE9569-2A93-4FB3-8181-9D99F5BF85F4}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{67BE9569-2A93-4FB3-8181-9D99F5BF85F4}.Release|Any CPU.Build.0 = Release|Any CPU
+		{41513BF9-E555-48D2-8EE5-517CA1F225E8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{41513BF9-E555-48D2-8EE5-517CA1F225E8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{41513BF9-E555-48D2-8EE5-517CA1F225E8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{41513BF9-E555-48D2-8EE5-517CA1F225E8}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{C0414A8D-D741-43D2-AD38-46AEBB9698F6} = {0380555F-9F01-432A-BA57-FB1A4AB495B5}
@@ -62,5 +68,6 @@ Global
 		{8A813774-F511-4C23-991B-51AFB9026146} = {A26AADFF-6902-47E2-A76D-CD69AEBE1420}
 		{1FB1E6F9-7773-45D5-B81A-17FB35551D3C} = {82DAE9A3-FF13-48FA-AE9C-A70249A26E1A}
 		{67BE9569-2A93-4FB3-8181-9D99F5BF85F4} = {1FB1E6F9-7773-45D5-B81A-17FB35551D3C}
+		{41513BF9-E555-48D2-8EE5-517CA1F225E8} = {0380555F-9F01-432A-BA57-FB1A4AB495B5}
 	EndGlobalSection
 EndGlobal
diff --git a/tests/Core.Tests/ArchitectureTests.cs b/tests/Core.Tests/ArchitectureTests.cs
new file mode 100644
index 0000000..a25a7c0
--- /dev/null
+++ b/tests/Core.Tests/ArchitectureTests.cs
@@ -0,0 +1,60 @@
+using System.Reflection;
+using FluentAssertions;
+using NetArchTest.Rules;
+using Xunit.Abstractions;
+
+namespace Core.Tests;
+
+public class ArchitectureTests()
+{
+    private static readonly Assembly ApiAssembly = Assembly.GetAssembly(typeof(Api.Program));
+    private static readonly Assembly InfrastructureAssembly = Assembly.GetAssembly(typeof(Infrastructure.DependencyInjection));
+    private static readonly Assembly ApplicationAssembly = Assembly.GetAssembly(typeof(Application.DependencyInjection));
+    private static readonly Assembly DomainAssembly = Assembly.GetAssembly(typeof(Domain.Forecast));
+
+    [Fact]
+    public void Api_Should_Not_Depend_On_Infrastructure_Except_For_Setting_Up_DependencyInjection()
+    {
+        var result = Types.InAssembly(ApiAssembly)
+            .That()
+            .DoNotHaveName("Program")
+            .ShouldNot()
+            .HaveDependencyOn("Infrastructure")
+            .GetResult();
+
+        result.IsSuccessful.Should().BeTrue();
+    }
+    
+    [Fact]
+    public void Infrastructure_Should_Not_Depend_On_Api()
+    {
+        var result = Types.InAssembly(InfrastructureAssembly)
+            .ShouldNot()
+            .HaveDependencyOn("Api")
+            .GetResult();
+
+        result.IsSuccessful.Should().BeTrue();
+    }
+    
+    [Fact]
+    public void Application_Should_Not_Depend_On_Api_Or_Infrastructure()
+    {
+        var result = Types.InAssembly(ApplicationAssembly)
+            .ShouldNot()
+            .HaveDependencyOnAny("Api", "Infrastructure")
+            .GetResult();
+
+        result.IsSuccessful.Should().BeTrue();
+    }
+    
+    [Fact]
+    public void Domain_Should_Not_Have_Dependency_On_Any_Of_The_Other_Layers()
+    {
+        var result = Types.InAssembly(DomainAssembly)
+            .ShouldNot()
+            .HaveDependencyOnAny("Api", "Infrastructure", "Application")
+            .GetResult();
+
+        result.IsSuccessful.Should().BeTrue();
+    }
+}
\ No newline at end of file
diff --git a/tests/Core.Tests/Core.Tests.csproj b/tests/Core.Tests/Core.Tests.csproj
new file mode 100644
index 0000000..0c885de
--- /dev/null
+++ b/tests/Core.Tests/Core.Tests.csproj
@@ -0,0 +1,29 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+
+        <IsPackable>false</IsPackable>
+        <IsTestProject>true</IsTestProject>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="coverlet.collector" Version="6.0.0"/>
+        <PackageReference Include="FluentAssertions" Version="6.12.1" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0"/>
+        <PackageReference Include="NetArchTest.Rules" Version="1.3.2" />
+        <PackageReference Include="xunit" Version="2.5.3"/>
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <Using Include="Xunit"/>
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\..\src\Api\Api.csproj" />
+    </ItemGroup>
+
+</Project>