Add Basic integration test setup

Directory.Packages.props

@@ -43,5 +43,6 @@
         <PackageVersion Include="System.Collections.Immutable" Version="6.0.0"/>
         <PackageVersion Include="libclang" Version="14.0.0"/>
         <PackageVersion Include="libClangSharp" Version="14.0.0-beta1"/>
+        <PackageVersion Include="Verify.Xunit" Version="16.9.0" />
     </ItemGroup>
 </Project>

Silk.NET.sln

@@ -78,6 +78,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Silk.NET.SilkTouch.Symbols.
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Silk.NET.SilkTouch.Scraper.Tests", "tests\Silk.NET.SilkTouch.Scraper.Tests\Silk.NET.SilkTouch.Scraper.Tests.csproj", "{5329AC43-7177-4953-AFAB-A9FA7B9A4C7C}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Silk.NET.SilkTouch.IntegrationTests", "tests\Silk.NET.SilkTouch.IntegrationTests\Silk.NET.SilkTouch.IntegrationTests.csproj", "{66FE736C-C407-44C3-A94E-4345E22AA95E}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -316,6 +318,18 @@ Global
 		{5329AC43-7177-4953-AFAB-A9FA7B9A4C7C}.Release|x64.Build.0 = Release|Any CPU
 		{5329AC43-7177-4953-AFAB-A9FA7B9A4C7C}.Release|x86.ActiveCfg = Release|Any CPU
 		{5329AC43-7177-4953-AFAB-A9FA7B9A4C7C}.Release|x86.Build.0 = Release|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Debug|x64.Build.0 = Debug|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Debug|x86.Build.0 = Debug|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Release|x64.ActiveCfg = Release|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Release|x64.Build.0 = Release|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Release|x86.ActiveCfg = Release|Any CPU
+		{66FE736C-C407-44C3-A94E-4345E22AA95E}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -346,6 +360,7 @@ Global
 		{97AF0383-2665-446E-9FBD-218051422B13} = {8238D9F3-E158-4633-8017-B29AA3AD61F7}
 		{795A93A6-9578-439F-BB08-07B148B1D4CE} = {94D5D1E1-B998-4CB1-9D04-DA138A2B0F3C}
 		{5329AC43-7177-4953-AFAB-A9FA7B9A4C7C} = {94D5D1E1-B998-4CB1-9D04-DA138A2B0F3C}
+		{66FE736C-C407-44C3-A94E-4345E22AA95E} = {94D5D1E1-B998-4CB1-9D04-DA138A2B0F3C}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {F5273D7F-3334-48DF-94E3-41AE6816CD4D}

tests/Silk.NET.SilkTouch.IntegrationTests/Silk.NET.SilkTouch.IntegrationTests.csproj

@@ -0,0 +1,31 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net6.0</TargetFramework>
+        <Nullable>enable</Nullable>
+
+        <IsPackable>false</IsPackable>
+
+        <!-- Workaround for issue https://github.com/microsoft/ClangSharp/issues/129 -->
+        <RuntimeIdentifier Condition="'$(RuntimeIdentifier)' == '' AND '$(PackAsTool)' != 'true'">$(NETCoreSdkRuntimeIdentifier)</RuntimeIdentifier>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" />
+        <PackageReference Include="xunit" />
+        <PackageReference Include="xunit.runner.visualstudio">
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+            <PrivateAssets>all</PrivateAssets>
+        </PackageReference>
+        <PackageReference Include="libclang" />
+        <PackageReference Include="libClangSharp" />
+        <PackageReference Include="Verify.Xunit" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\..\src\generators\Silk.NET.SilkTouch.Scraper\Silk.NET.SilkTouch.Scraper.csproj" />
+        <ProjectReference Include="..\..\src\generators\Silk.NET.SilkTouch.Emitter\Silk.NET.SilkTouch.Emitter.csproj" />
+        <ProjectReference Include="..\..\src\generators\Silk.NET.SilkTouch.Symbols\Silk.NET.SilkTouch.Symbols.csproj" />
+    </ItemGroup>
+
+</Project>

tests/Silk.NET.SilkTouch.IntegrationTests/StructIntegrationTests.Test1.verified.txt

@@ -0,0 +1,11 @@
+
+
+/* -------------------------- NEW OUTPUT -------------------------- */
+
+namespace LIBRARY_NAMESPACE
+{
+[StructLayout(LayoutKind.Explicit)]
+public struct Test
+{
+}
+}

tests/Silk.NET.SilkTouch.IntegrationTests/StructIntegrationTests.cs

@@ -0,0 +1,25 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Threading.Tasks;
+using VerifyXunit;
+using Xunit;
+
+namespace Silk.NET.SilkTouch.IntegrationTests;
+
+[UsesVerify]
+public class StructIntegrationTests
+{
+    [Fact]
+    public Task Test1()
+    {
+        var result = TestHelper.GetCSharpOutputFromCPP(@"
+#include <stdint.h>
+
+typedef struct {
+    int32_t f1;
+    int32_t f2;
+} Test;");
+        return Verifier.Verify(result);
+    }
+}

tests/Silk.NET.SilkTouch.IntegrationTests/TestHelper.cs

@@ -0,0 +1,43 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using Silk.NET.SilkTouch.Emitter;
+using Silk.NET.SilkTouch.Scraper;
+using Xunit;
+
+namespace Silk.NET.SilkTouch.IntegrationTests;
+
+public static class TestHelper
+{
+    public static string GetCSharpOutputFromCPP(string cpp)
+    {
+        var tempFile = Path.GetTempFileName();
+
+        File.WriteAllText(tempFile, "/* THIS IS A GENERATED FILE, PIPED TO CLANG FOR TESTING BY SILK.NET */" + cpp);
+
+        var scraper = new ClangScraper();
+        var xml = scraper.GenerateXML
+            (tempFile, Array.Empty<string>(), Array.Empty<string>(), Array.Empty<string>(), Array.Empty<string>());
+
+        Assert.NotNull(xml);
+
+        try
+        {
+            File.Delete(tempFile);
+        } catch { /* It's a Temporary File. We dont' care. */}
+
+        var symbols = scraper.ScrapeXML(xml!);
+        var emitter = new CSharpEmitter();
+        var outputs = symbols.Select(x => emitter.Transform(x));
+        return outputs.Aggregate
+        (
+            "",
+            (old, node) => old + "\n\n/* -------------------------- NEW OUTPUT -------------------------- */\n\n" +
+                           node.ToFullString()
+        );
+    }
+}