Ensure that internal code is never exposed through InternalsVisibleTo

Build/_build.csproj

@@ -16,7 +16,7 @@
     <PackageReference Include="Nuke.Components" Version="9.0.4" />
     <PackageDownload Include="ReportGenerator" Version="[5.2.0]" />
     <PackageDownload Include="GitVersion.Tool" Version="[6.0.2]" />
-    <PackageDownload Include="PackageGuard" Version="[1.4.1]" />
+    <PackageDownload Include="PackageGuard" Version="[1.6.0]" />
   </ItemGroup>
 
 </Project>

Pathy.ApiVerificationTests/ApprovedApi/pathy.globbing.net47.verified.txt

@@ -1 +1,8 @@
 [assembly: System.Runtime.CompilerServices.InternalsVisibleTo("Pathy.Specs")]
+namespace Pathy
+{
+    public static class ChainablePathExtensions
+    {
+        public static Pathy.ChainablePath[] GlobFiles(this Pathy.ChainablePath path, string globPattern) { }
+    }
+}

Pathy.ApiVerificationTests/ApprovedApi/pathy.globbing.net8.0.verified.txt

@@ -1 +1,8 @@
 [assembly: System.Runtime.CompilerServices.InternalsVisibleTo("Pathy.Specs")]
+namespace Pathy
+{
+    public static class ChainablePathExtensions
+    {
+        public static Pathy.ChainablePath[] GlobFiles(this Pathy.ChainablePath path, string globPattern) { }
+    }
+}

Pathy.ApiVerificationTests/ApprovedApi/pathy.globbing.netstandard2.0.verified.txt

@@ -1 +1,8 @@
 [assembly: System.Runtime.CompilerServices.InternalsVisibleTo("Pathy.Specs")]
+namespace Pathy
+{
+    public static class ChainablePathExtensions
+    {
+        public static Pathy.ChainablePath[] GlobFiles(this Pathy.ChainablePath path, string globPattern) { }
+    }
+}

Pathy.ApiVerificationTests/ApprovedApi/pathy.globbing.netstandard2.1.verified.txt

@@ -1 +1,8 @@
 [assembly: System.Runtime.CompilerServices.InternalsVisibleTo("Pathy.Specs")]
+namespace Pathy
+{
+    public static class ChainablePathExtensions
+    {
+        public static Pathy.ChainablePath[] GlobFiles(this Pathy.ChainablePath path, string globPattern) { }
+    }
+}

Pathy.ApiVerificationTests/Pathy.ApiVerificationTests.csproj

@@ -13,7 +13,7 @@
     </PackageReference>
     <PackageReference Include="PublicApiGenerator" Version="11.4.6" />
     <PackageReference Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageReference Include="Verify.Xunit" Version="30.5.0" />
+    <PackageReference Include="Verify.Xunit" Version="30.7.2" />
   </ItemGroup>
 
   <ItemGroup>

Pathy.Globbing/Pathy.Globbing.csproj

@@ -7,7 +7,7 @@
         <ImplicitUsings>disable</ImplicitUsings>
         <NuSpecFile>.nuspec</NuSpecFile>
         <NuspecProperties>version=$(Version)</NuspecProperties>
-        <DefineConstants>MYPACKAGE_COMPILE</DefineConstants>
+        <DefineConstants>PATHY_PUBLIC</DefineConstants>
         <NoWarn>1591;1573</NoWarn>
         <GeneratePackageOnBuild>False</GeneratePackageOnBuild>
         <AllowedOutputExtensionsInPackageBuildOutputFolder>$(AllowedOutputExtensionsInPackageBuildOutputFolder);.pdb</AllowedOutputExtensionsInPackageBuildOutputFolder>

Pathy.Globbing/PathyGlobbing.cs

@@ -1,6 +1,7 @@
 // <autogenerated />
 
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using Microsoft.Extensions.FileSystemGlobbing;
 using Microsoft.Extensions.FileSystemGlobbing.Abstractions;
@@ -10,32 +11,48 @@
 #nullable disable
 
 // ReSharper disable once CheckNamespace
-namespace Pathy;
-
+namespace Pathy
+{
 #if PATHY_PUBLIC
-public static class ChainablePathExtensions
+    public static class ChainablePathExtensions
 #else
-internal static class ChainablePathExtensions
+    [global::Microsoft.CodeAnalysis.Embedded]
+    internal static class ChainablePathExtensions
 #endif
+    {
+        /// <summary>
+        /// Matches files in the specified directory or subdirectories according to the provided glob pattern
+        /// and returns them as an array of <see cref="ChainablePath"/> objects.
+        /// </summary>
+        /// <remarks>
+        /// See also <seealso href="https://learn.microsoft.com/en-us/dotnet/core/extensions/file-globbing"/>
+        /// </remarks>
+        /// <param name="path">The base directory path to start the glob search from.</param>
+        /// <param name="globPattern">The glob pattern used to match file paths, e.g. **/*.md or dir/**/*</param>
+        public static ChainablePath[] GlobFiles(this ChainablePath path, string globPattern)
+        {
+            Matcher matcher = new(StringComparison.OrdinalIgnoreCase);
+            matcher.AddInclude(globPattern);
+
+            return matcher
+                .Execute(new DirectoryInfoWrapper(path.ToDirectoryInfo()))
+                .Files
+                .Select(file => ChainablePath.From(path / file.Path))
+                .ToArray();
+        }
+    }
+}
+
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+namespace Microsoft.CodeAnalysis
 {
     /// <summary>
-    /// Matches files in the specified directory or subdirectories according to the provided glob pattern
-    /// and returns them as an array of <see cref="ChainablePath"/> objects.
+    /// A special attribute recognized by Roslyn, that marks a type as "embedded", meaning it won't ever be visible from other assemblies.
     /// </summary>
-    /// <remarks>
-    /// See also <seealso href="https://learn.microsoft.com/en-us/dotnet/core/extensions/file-globbing"/>
-    /// </remarks>
-    /// <param name="path">The base directory path to start the glob search from.</param>
-    /// <param name="globPattern">The glob pattern used to match file paths, e.g. **/*.md or dir/**/*</param>
-    public static ChainablePath[] GlobFiles(this ChainablePath path, string globPattern)
+    [AttributeUsage(AttributeTargets.All)]
+    [ExcludeFromCodeCoverage]
+    internal sealed class EmbeddedAttribute : Attribute
     {
-        Matcher matcher = new(StringComparison.OrdinalIgnoreCase);
-        matcher.AddInclude(globPattern);
-
-        return matcher
-            .Execute(new DirectoryInfoWrapper(path.ToDirectoryInfo()))
-            .Files
-            .Select(file => ChainablePath.From(path / file.Path))
-            .ToArray();
     }
 }

Pathy.Specs/ChainablePathSpecs.cs

@@ -1,6 +1,5 @@
 using System;
 using System.IO;
-using System.Linq;
 using System.Reflection;
 using FluentAssertions;
 using Xunit;

Pathy.Specs/Pathy.Specs.csproj

@@ -18,7 +18,7 @@
 
     <ItemGroup>
       <PackageReference Include="xunit" Version="2.9.3" />
-      <PackageReference Include="FluentAssertions" Version="8.5.0" />
+      <PackageReference Include="FluentAssertions" Version="8.6.0" />
       <PackageReference Include="JetBrains.Annotations" Version="2025.2.0" />
       <PackageReference Include="coverlet.collector" Version="6.0.4" PrivateAssets="all">
         <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>