chore: initial commit

Signed-off-by: Alan Brault <alan.brault@visus.io>

tests/.editorconfig

@@ -0,0 +1,9 @@
+# C# files
+[*.cs]
+
+#### C# Coding Conventions ####
+
+# var preferences
+csharp_style_var_elsewhere = true:suggestion
+csharp_style_var_for_built_in_types = true:suggestion
+csharp_style_var_when_type_is_apparent = true:suggestion

tests/Directory.Build.props

@@ -0,0 +1,16 @@
+<Project>
+    <PropertyGroup>
+        <IsPackable>false</IsPackable>
+        <GenerateDocumentationFile>false</GenerateDocumentationFile>
+        <Nullable>enable</Nullable>
+        <ImplicitUsings>true</ImplicitUsings>
+        <IsPackable>false</IsPackable>
+        <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(CI)' == 'true'">
+        <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
+        <RestoreLockedMode>true</RestoreLockedMode>
+    </PropertyGroup>
+
+</Project>

tests/MapperSourceGen.SourceGenerator.Tests/Constants.cs

@@ -0,0 +1,16 @@
+namespace MapperSourceGen.SourceGenerator.Tests;
+
+internal static class Constants
+{
+    public const string AutoGeneratedStatement = """
+                                                 //------------------------------------------------------------------------------
+                                                 // <auto-generated>
+                                                 //     This code was generated by a tool.
+                                                 //
+                                                 //     Changes to this file may cause incorrect behavior and will be lost if
+                                                 //     the code is regenerated.
+                                                 // </auto-generated>
+                                                 //------------------------------------------------------------------------------
+
+                                                 """;
+}

tests/MapperSourceGen.SourceGenerator.Tests/Fixture.cs

@@ -0,0 +1,39 @@
+namespace MapperSourceGen.SourceGenerator.Tests;
+
+using System.Reflection;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+
+internal static class Fixture
+{
+    private static readonly Type[] RequiredAssemblies =
+    [
+        typeof(Binder),
+        typeof(MapperAttribute)
+    ];
+
+    private static IEnumerable<MetadataReference> AssemblyReferencesForCodeGen =>
+        AppDomain.CurrentDomain
+                 .GetAssemblies()
+                 .Concat(RequiredAssemblies.Select(s => s.Assembly))
+                 .Distinct()
+                 .Where(w => !w.IsDynamic)
+                 .Select(s => MetadataReference.CreateFromFile(s.Location));
+
+    public static Task VerifyGenerateSourcesAsync(string source, params IIncrementalGenerator[] generators)
+    {
+        var syntaxTree = CSharpSyntaxTree.ParseText(source, CSharpParseOptions.Default);
+
+        var compilation = CSharpCompilation.Create(
+                                                   "compilation",
+                                                   [syntaxTree],
+                                                   AssemblyReferencesForCodeGen,
+                                                   new CSharpCompilationOptions(OutputKind.ConsoleApplication));
+
+        var driver = CSharpGeneratorDriver.Create(generators);
+        var runner = driver.RunGenerators(compilation);
+        var verify = Verify(runner);
+
+        return verify;
+    }
+}

tests/MapperSourceGen.SourceGenerator.Tests/MapperGeneratorFacts.cs

@@ -0,0 +1,20 @@
+namespace MapperSourceGen.SourceGenerator.Tests;
+
+public sealed class MapperGeneratorFacts
+{
+    [Fact]
+    public Task Should_Emit_Dto_And_Mapper()
+    {
+        const string source = """
+                              namespace MapperSourceGen.SourceGenerator.Tests;
+
+                              [Mapper]
+                              partial class MyEntity
+                              {
+                                  public int Id { get; set; }
+                              }
+                              """;
+        
+        return Fixture.VerifyGenerateSourcesAsync(source, new MapperGenerator());
+    }
+}

tests/MapperSourceGen.SourceGenerator.Tests/MapperSourceGen.SourceGenerator.Tests.csproj

@@ -0,0 +1,51 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <IsTestProject>true</IsTestProject>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="coverlet.collector">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
+        <PackageReference Include="coverlet.msbuild">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
+        <PackageReference Include="JunitXml.TestLogger" />
+        <PackageReference Include="Microsoft.CodeAnalysis.Common" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" />
+        <PackageReference Include="Verify.DiffPlex" />
+        <PackageReference Include="Verify.SourceGenerators" />
+        <PackageReference Include="Verify.Xunit" />
+        <PackageReference Include="xunit" />
+        <PackageReference Include="xunit.runner.visualstudio">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
+    </ItemGroup>
+    
+    <ItemGroup>
+        <Using Include="Xunit"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\..\src\MapperSourceGen\MapperSourceGen.csproj"/>
+
+        <!--
+        When referencing a source generator that is part of the solution for tests, ensure that the following properties are set:
+        
+        - OutputItemType="Analyzer" to treat it as an analyzer.
+        - SetTargetFramework="TargetFramework=netstandard2.0" to ensure compatibility with the source generator.
+        -->
+        <ProjectReference Include="..\..\src\MapperSourceGen.SourceGenerator\MapperSourceGen.SourceGenerator.csproj"
+                          OutputItemType="Analyzer"
+                          SetTargetFramework="TargetFramework=netstandard2.0"/>
+    </ItemGroup>
+
+
+
+</Project>

tests/MapperSourceGen.SourceGenerator.Tests/ModuleInitializer.cs

@@ -0,0 +1,18 @@
+namespace MapperSourceGen.SourceGenerator.Tests;
+
+using System.Runtime.CompilerServices;
+using VerifyTests.DiffPlex;
+
+public static class ModuleInitializer
+{
+    #pragma warning disable CA2255
+    [ModuleInitializer]
+    #pragma warning restore CA2255
+    public static void Initialize()
+    {
+        DerivePathInfo((file, _, type, method) => new PathInfo(Path.Combine(Path.GetDirectoryName(file)!, "ref"), type.Name, method.Name));
+
+        VerifySourceGenerators.Initialize();
+        VerifyDiffPlex.Initialize(OutputType.Compact);
+    }
+}

tests/MapperSourceGen.SourceGenerator.Tests/packages.lock.json

@@ -0,0 +1,254 @@
+{
+  "version": 2,
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+      },
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+      },
+      "JunitXml.TestLogger": {
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+        }
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+      "Microsoft.NET.Test.Sdk": {
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+        }
+      },
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+        "dependencies": {
+          "xunit.extensibility.core": "[2.9.3]"
+        }
+      },
+      "mappersourcegen": {
+        "type": "Project"
+      },
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+        "type": "Project",
+        "dependencies": {
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+        }
+      }
+    }
+  }
+}

tests/MapperSourceGen.SourceGenerator.Tests/ref/MapperGeneratorFacts.Should_Emit_Dto_And_Mapper#MapperSourceGen.SourceGenerator.Tests.MyEntityDto.g.verified.cs

@@ -0,0 +1,12 @@
+//HintName: MapperSourceGen.SourceGenerator.Tests.MyEntityDto.g.cs
+// <auto-generated/>
+#pragma warning disable
+#nullable enable
+namespace MapperSourceGen.SourceGenerator.Tests
+{
+    /// <inheritdoc/>
+    internal partial class MyEntityDto
+    {
+        public int Id { get; set; }
+    }
+}

tests/MapperSourceGen.SourceGenerator.Tests/ref/MapperGeneratorFacts.Should_Emit_Dto_And_Mapper#MapperSourceGen.SourceGenerator.Tests.MyEntityMapper.g.verified.cs

@@ -0,0 +1,28 @@
+//HintName: MapperSourceGen.SourceGenerator.Tests.MyEntityMapper.g.cs
+// <auto-generated/>
+#pragma warning disable
+#nullable enable
+namespace MapperSourceGen.SourceGenerator.Tests
+{
+    /// <inheritdoc/>
+    internal partial class MyEntityMapper
+    {
+        public static MapperSourceGen.SourceGenerator.Tests.MyEntity ToModel(MapperSourceGen.SourceGenerator.Tests.MyEntityDto source)
+        {
+            ArgumentNullException.ThrowIfNull(nameof(source));
+            return new MapperSourceGen.SourceGenerator.Tests.MyEntity()
+            {
+                Id = source.Id,
+            };
+        }
+
+        public static MapperSourceGen.SourceGenerator.Tests.MyEntityDto ToDto(MapperSourceGen.SourceGenerator.Tests.MyEntity source)
+        {
+            ArgumentNullException.ThrowIfNull(nameof(source));
+            return new MapperSourceGen.SourceGenerator.Tests.MyEntityDto()
+            {
+                Id = source.Id,
+            };
+        }
+    }
+}