TestableIO · fgreinacher · Nov 21, 2020 · Nov 15, 2020 · Nov 17, 2020 · Nov 17, 2020
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
@@ -1,6 +1,6 @@
 {
     "name": "C# (.NET Core)",
-    "image": "mcr.microsoft.com/vscode/devcontainers/dotnetcore:3.1",
+    "image": "mcr.microsoft.com/vscode/devcontainers/dotnet:5.0",
     "settings": {
         "terminal.integrated.shell.linux": "/bin/bash"
     },

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -17,8 +17,18 @@ jobs:
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
+      - name: Setup .NET Core 2.1
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: "2.1.x"
+      - name: Setup .NET Core 3.1
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: "3.1.x"
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v1
       - name: Run tests
-        run: dotnet test --collect:"XPlat Code Coverage"
+        run: dotnet test --collect:"XPlat Code Coverage"  --logger "GitHubActions"
       - name: Upload coverage
         uses: actions/upload-artifact@v2
         with:
@@ -31,6 +41,8 @@ jobs:
     steps:
       - name: Checkout sources
         uses: actions/checkout@v2
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v1
       - uses: actions/download-artifact@v2
         with:
           name: Code coverage ubuntu-latest
@@ -64,6 +76,8 @@ jobs:
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v1
       - name: Create packages
         run: dotnet pack --configuration Release --output ./packages
       - name: Upload a Build Artifact
@@ -81,6 +95,8 @@ jobs:
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v1
       - uses: actions/download-artifact@v2
         with:
           name: NuGet packages

diff --git a/Directory.Build.props b/Directory.Build.props
@@ -7,8 +7,11 @@
     <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)StrongName.snk</AssemblyOriginatorKeyFile>
     <IncludeSymbols>true</IncludeSymbols>
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
-    <LangVersion>8.0</LangVersion>
-    <DefineConstants Condition="'$(TargetFramework)' == 'netcoreapp3.0' OR '$(TargetFramework)' == 'netstandard2.1'">$(DefineConstants);FEATURE_ASYNC_FILE;FEATURE_ENUMERATION_OPTIONS;FEATURE_ADVANCED_PATH_OPERATIONS</DefineConstants>
+    <LangVersion>9.0</LangVersion>
+    <PackageTags>testing</PackageTags>
+    <PackageProjectUrl>https://github.com/System-IO-Abstractions/System.IO.Abstractions</PackageProjectUrl>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
+    <DefineConstants Condition="'$(TargetFramework)' == 'net5.0' OR '$(TargetFramework)' == 'netcoreapp3.1' OR '$(TargetFramework)' == 'netstandard2.1'">$(DefineConstants);FEATURE_ASYNC_FILE;FEATURE_ENUMERATION_OPTIONS;FEATURE_ADVANCED_PATH_OPERATIONSFEATURE_PATH_JOIN_WITH_SPAN</DefineConstants>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Nerdbank.GitVersioning" Version="3.3.37">

diff --git a/benchmarks/System.IO.Abstractions.Benchmarks/System.IO.Abstractions.Benchmarks.csproj b/benchmarks/System.IO.Abstractions.Benchmarks/System.IO.Abstractions.Benchmarks.csproj
@@ -3,7 +3,7 @@
 		<AssemblyName>System.IO.Abstractions.Benchmarks</AssemblyName>
 		<RootNamespace>System.IO.Abstractions.Benchmarks</RootNamespace>
 		<Description>Bencharmks comparisons.</Description>
-		<TargetFrameworks>netcoreapp3.1;net461</TargetFrameworks>
+		<TargetFrameworks>net5.0;netcoreapp3.1;net461</TargetFrameworks>
 		<PackageProjectUrl>https://github.com/System-IO-Abstractions/System.IO.Abstractions</PackageProjectUrl>
 		<PackageLicenseExpression>MIT</PackageLicenseExpression>
 		<PackageTags>testing</PackageTags>

diff --git a/global.json b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "3.1.300",
-    "rollForward": "latestMinor"
+    "version": "5.0.100",
+    "rollForward": "latestFeature"
   }
 }
diff --git a/src/System.IO.Abstractions.TestingHelpers/MockFile.cs b/src/System.IO.Abstractions.TestingHelpers/MockFile.cs
@@ -20,20 +20,14 @@ public MockFile(IMockFileDataAccessor mockFileDataAccessor) : base(mockFileDataA
 
         public override void AppendAllLines(string path, IEnumerable<string> contents)
         {
-            mockFileDataAccessor.PathVerifier.IsLegalAbsoluteOrRelative(path, "path");
-            VerifyValueIsNotNull(contents, "contents");
-
             AppendAllLines(path, contents, MockFileData.DefaultEncoding);
         }
 
         public override void AppendAllLines(string path, IEnumerable<string> contents, Encoding encoding)
         {
-            if (encoding == null)
-            {
-                throw new ArgumentNullException(nameof(encoding));
-            }
-
             mockFileDataAccessor.PathVerifier.IsLegalAbsoluteOrRelative(path, "path");
+            VerifyValueIsNotNull(contents, nameof(contents));
+            VerifyValueIsNotNull(encoding, nameof(encoding));
 
             var concatContents = contents.Aggregate("", (a, b) => a + b + Environment.NewLine);
             AppendAllText(path, concatContents, encoding);
@@ -492,20 +486,18 @@ public override string[] ReadAllLines(string path, Encoding encoding)
 
         public override string ReadAllText(string path)
         {
-            mockFileDataAccessor.PathVerifier.IsLegalAbsoluteOrRelative(path, "path");
-
-            if (!mockFileDataAccessor.FileExists(path))
-            {
-                throw CommonExceptions.FileNotFound(path);
-            }
-
             return ReadAllText(path, MockFileData.DefaultEncoding);
         }
 
         public override string ReadAllText(string path, Encoding encoding)
         {
             mockFileDataAccessor.PathVerifier.IsLegalAbsoluteOrRelative(path, "path");
 
+            if (!mockFileDataAccessor.FileExists(path))
+            {
+                throw CommonExceptions.FileNotFound(path);
+            }
+
             if (encoding == null)
             {
                 throw new ArgumentNullException(nameof(encoding));

diff --git a/src/System.IO.Abstractions.TestingHelpers/System.IO.Abstractions.TestingHelpers.csproj b/src/System.IO.Abstractions.TestingHelpers/System.IO.Abstractions.TestingHelpers.csproj
@@ -3,10 +3,7 @@
         <AssemblyName>System.IO.Abstractions.TestingHelpers</AssemblyName>
         <RootNamespace>System.IO.Abstractions.TestingHelpers</RootNamespace>
         <Description>A set of pre-built mocks to help when testing file system interactions.</Description>
-        <TargetFrameworks>netstandard2.1;netstandard2.0;net461</TargetFrameworks>
-        <PackageProjectUrl>https://github.com/System-IO-Abstractions/System.IO.Abstractions</PackageProjectUrl>
-        <PackageLicenseExpression>MIT</PackageLicenseExpression>
-        <PackageTags>testing</PackageTags>
+        <TargetFrameworks>net5.0;netstandard2.1;netstandard2.0;net461</TargetFrameworks>
     </PropertyGroup>
     <ItemGroup>
         <ProjectReference Include="../System.IO.Abstractions/System.IO.Abstractions.csproj" />

diff --git a/src/System.IO.Abstractions/System.IO.Abstractions.csproj b/src/System.IO.Abstractions/System.IO.Abstractions.csproj
@@ -3,15 +3,14 @@
     <AssemblyName>System.IO.Abstractions</AssemblyName>
     <RootNamespace>System.IO.Abstractions</RootNamespace>
     <Description>A set of abstractions to help make file system interactions testable.</Description>
-    <TargetFrameworks>netstandard2.1;netstandard2.0;net461</TargetFrameworks>
-    <PackageProjectUrl>https://github.com/System-IO-Abstractions/System.IO.Abstractions</PackageProjectUrl>
-    <PackageLicenseExpression>MIT</PackageLicenseExpression>
-    <PackageTags>testing</PackageTags>
-    <DefineConstants Condition="'$(TargetFramework)' == 'netstandard2.1'">$(DefineConstants);FEATURE_ASYNC_FILE;FEATURE_ENUMERATION_OPTIONS;FEATURE_ADVANCED_PATH_OPERATIONS;FEATURE_PATH_JOIN_WITH_SPAN</DefineConstants>
+    <TargetFrameworks>net5.0;netstandard2.1;netstandard2.0;net461</TargetFrameworks>
   </PropertyGroup>
-  <ItemGroup Condition="'$(TargetFramework)' != 'net461'">
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.1' OR '$(TargetFramework)' == 'netstandard2.0'">
     <PackageReference Include="System.IO.FileSystem.AccessControl" Version="4.7.0"/>
   </ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == 'net5.0'">
+    <PackageReference Include="System.IO.FileSystem.AccessControl" Version="5.0.0"/>
+  </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies.net461" Version="1.0.0">
       <PrivateAssets>all</PrivateAssets>

diff --git a/tests/System.IO.Abstractions.TestingHelpers.Tests/MockFileReadAllLinesTests.cs b/tests/System.IO.Abstractions.TestingHelpers.Tests/MockFileReadAllLinesTests.cs
@@ -148,8 +148,8 @@ public void MockFile_ReadAllLinesAsync_NotExistingFile_ThrowsCorrectFileNotFound
             var absentFileNameFullPath = XFS.Path(@"c:\you surely don't have such file.hope-so");
             var mockFileSystem = new MockFileSystem();
 
-            var act = new AsyncTestDelegate(() =>
-                mockFileSystem.File.ReadAllTextAsync(absentFileNameFullPath)
+            var act = new AsyncTestDelegate(async() =>
+                await mockFileSystem.File.ReadAllTextAsync(absentFileNameFullPath)
             );
 
             var exception = Assert.CatchAsync<FileNotFoundException>(act);

diff --git a/...m.IO.Abstractions.TestingHelpers.Tests/System.IO.Abstractions.TestingHelpers.Tests.csproj b/...m.IO.Abstractions.TestingHelpers.Tests/System.IO.Abstractions.TestingHelpers.Tests.csproj
@@ -1,13 +1,20 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;netcoreapp2.1</TargetFrameworks>
+    <TargetFrameworks>net5.0;netcoreapp3.1;netcoreapp2.1</TargetFrameworks>
     <TargetFrameworks Condition="!$([MSBuild]::IsOsUnixLike())">$(TargetFrameworks);net461</TargetFrameworks>
     <Description>The unit tests for our pre-built mocks</Description>
     <AssemblyName>System.IO.Abstractions.TestingHelpers.Tests</AssemblyName>
     <RootNamespace>System.IO.Abstractions.TestingHelpers.Tests</RootNamespace>
     <IsPackable>false</IsPackable>
     <IsTestable>true</IsTestable>
   </PropertyGroup>
+  <PropertyGroup>
+    <!--  
+      Ensure that test logger is copied to output directory, see 
+      https://github.com/Tyrrrz/GitHubActionsTestLogger/issues/5 
+    -->
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+  </PropertyGroup>
   <ItemGroup>
     <None Remove="TestFiles\SecondTestFile.txt" />
     <None Remove="TestFiles\TestFile.txt" />
@@ -25,6 +32,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
+    <PackageReference Include="GitHubActionsTestLogger" Version="1.1.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
     <PackageReference Include="Moq" Version="4.14.5" />
     <PackageReference Include="nunit" Version="3.12.0" />

diff --git a/tests/System.IO.Abstractions.Tests/ApiParityTests.cs b/tests/System.IO.Abstractions.Tests/ApiParityTests.cs
@@ -1,6 +1,5 @@
 using System.Collections.Generic;
 using System.Linq;
-using System.Reflection;
 using NUnit.Framework;
 using Snapshooter;
 using Snapshooter.NUnit;
@@ -92,9 +91,11 @@ public ApiDiff(IEnumerable<string> extraMembers, IEnumerable<string> missingMemb
 #if NETCOREAPP3_1
         private const string snapshotSuffix = ".NET Core 3.1";
 #elif NETCOREAPP2_1
-            private const string snapshotSuffix = ".NET Core 2.1";
+        private const string snapshotSuffix = ".NET Core 2.1";
 #elif NET461
-            private const string snapshotSuffix = ".NET Framework 4.6.1";
+        private const string snapshotSuffix = ".NET Framework 4.6.1";
+#elif NET5_0
+        private const string snapshotSuffix = ".NET 5.0";
 #else
 #error Unknown target framework.
 #endif

diff --git a/tests/System.IO.Abstractions.Tests/System.IO.Abstractions.Tests.csproj b/tests/System.IO.Abstractions.Tests/System.IO.Abstractions.Tests.csproj
@@ -1,13 +1,20 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;netcoreapp2.1</TargetFrameworks>
+    <TargetFrameworks>net5.0;netcoreapp3.1;netcoreapp2.1</TargetFrameworks>
     <TargetFrameworks Condition="!$([MSBuild]::IsOsUnixLike())">$(TargetFrameworks);net461</TargetFrameworks>
     <Description>The unit tests for our the core abstractions</Description>
     <AssemblyName>System.IO.Abstractions.Tests</AssemblyName>
     <RootNamespace>System.IO.Abstractions.Tests</RootNamespace>
     <IsPackable>false</IsPackable>
     <IsTestable>true</IsTestable>
   </PropertyGroup>
+  <PropertyGroup>
+    <!--  
+      Ensure that test logger is copied to output directory, see 
+      https://github.com/Tyrrrz/GitHubActionsTestLogger/issues/5 
+    -->
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+  </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="../../src/System.IO.Abstractions/System.IO.Abstractions.csproj" />
   </ItemGroup>
@@ -16,6 +23,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
+    <PackageReference Include="GitHubActionsTestLogger" Version="1.1.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
     <PackageReference Include="Moq" Version="4.14.5" />
     <PackageReference Include="nunit" Version="3.12.0" />

diff --git a/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.DirectoryInfo_.NET 5.0.snap b/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.DirectoryInfo_.NET 5.0.snap
@@ -0,0 +1,14 @@
+{
+  "ExtraMembers": [
+    "System.Security.AccessControl.DirectorySecurity GetAccessControl()",
+    "System.Security.AccessControl.DirectorySecurity GetAccessControl(System.Security.AccessControl.AccessControlSections)",
+    "Void Create(System.Security.AccessControl.DirectorySecurity)",
+    "Void SetAccessControl(System.Security.AccessControl.DirectorySecurity)"
+  ],
+  "MissingMembers": [
+    "System.Object GetLifetimeService()",
+    "System.Object InitializeLifetimeService()",
+    "Void .ctor(System.String)",
+    "Void GetObjectData(System.Runtime.Serialization.SerializationInfo, System.Runtime.Serialization.StreamingContext)"
+  ]
+}
diff --git a/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.Directory_.NET 5.0.snap b/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.Directory_.NET 5.0.snap
@@ -0,0 +1,12 @@
+{
+  "ExtraMembers": [
+    "System.IO.Abstractions.IDirectoryInfo CreateDirectory(System.String, System.Security.AccessControl.DirectorySecurity)",
+    "System.Security.AccessControl.DirectorySecurity GetAccessControl(System.String)",
+    "System.Security.AccessControl.DirectorySecurity GetAccessControl(System.String, System.Security.AccessControl.AccessControlSections)",
+    "Void SetAccessControl(System.String, System.Security.AccessControl.DirectorySecurity)"
+  ],
+  "MissingMembers": [
+    "System.String[] GetFileSystemEntries(System.String, System.String, System.IO.EnumerationOptions)",
+    "System.String[] GetFileSystemEntries(System.String, System.String, System.IO.SearchOption)"
+  ]
+}
diff --git a/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.DriveInfo_.NET 5.0.snap b/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.DriveInfo_.NET 5.0.snap
@@ -0,0 +1,7 @@
+{
+  "ExtraMembers": [],
+  "MissingMembers": [
+    "System.IO.Abstractions.IDriveInfo[] GetDrives()",
+    "Void .ctor(System.String)"
+  ]
+}
diff --git a/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.FileInfo_.NET 5.0.snap b/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.FileInfo_.NET 5.0.snap
@@ -0,0 +1,14 @@
+{
+  "ExtraMembers": [
+    "System.Security.AccessControl.FileSecurity GetAccessControl()",
+    "System.Security.AccessControl.FileSecurity GetAccessControl(System.Security.AccessControl.AccessControlSections)",
+    "Void SetAccessControl(System.Security.AccessControl.FileSecurity)"
+  ],
+  "MissingMembers": [
+    "System.Object GetLifetimeService()",
+    "System.Object InitializeLifetimeService()",
+    "Void .ctor(System.String)",
+    "Void GetObjectData(System.Runtime.Serialization.SerializationInfo, System.Runtime.Serialization.StreamingContext)",
+    "Void MoveTo(System.String, Boolean)"
+  ]
+}
diff --git a/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.File_.NET 5.0.snap b/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.File_.NET 5.0.snap
@@ -0,0 +1,12 @@
+{
+  "ExtraMembers": [
+    "System.Security.AccessControl.FileSecurity GetAccessControl(System.String)",
+    "System.Security.AccessControl.FileSecurity GetAccessControl(System.String, System.Security.AccessControl.AccessControlSections)",
+    "System.Threading.Tasks.Task WriteAllLinesAsync(System.String, System.String[], System.Text.Encoding, System.Threading.CancellationToken)",
+    "System.Threading.Tasks.Task WriteAllLinesAsync(System.String, System.String[], System.Threading.CancellationToken)",
+    "Void SetAccessControl(System.String, System.Security.AccessControl.FileSecurity)"
+  ],
+  "MissingMembers": [
+    "Void Move(System.String, System.String, Boolean)"
+  ]
+}
diff --git a/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.Path_.NET 5.0.snap b/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.Path_.NET 5.0.snap
@@ -0,0 +1,35 @@
+{
+  "ExtraMembers": [
+    "Char get_AltDirectorySeparatorChar()",
+    "Char get_DirectorySeparatorChar()",
+    "Char get_PathSeparator()",
+    "Char get_VolumeSeparatorChar()",
+    "Char[] get_InvalidPathChars()"
+  ],
+  "MissingMembers": [
+    "Boolean EndsInDirectorySeparator(System.ReadOnlySpan`1[System.Char])",
+    "Boolean EndsInDirectorySeparator(System.String)",
+    "Boolean HasExtension(System.ReadOnlySpan`1[System.Char])",
+    "Boolean IsPathFullyQualified(System.ReadOnlySpan`1[System.Char])",
+    "Boolean IsPathFullyQualified(System.String)",
+    "Boolean IsPathRooted(System.ReadOnlySpan`1[System.Char])",
+    "Boolean TryJoin(System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.Span`1[System.Char], Int32 ByRef)",
+    "Boolean TryJoin(System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.Span`1[System.Char], Int32 ByRef)",
+    "System.ReadOnlySpan`1[System.Char] GetDirectoryName(System.ReadOnlySpan`1[System.Char])",
+    "System.ReadOnlySpan`1[System.Char] GetExtension(System.ReadOnlySpan`1[System.Char])",
+    "System.ReadOnlySpan`1[System.Char] GetFileName(System.ReadOnlySpan`1[System.Char])",
+    "System.ReadOnlySpan`1[System.Char] GetFileNameWithoutExtension(System.ReadOnlySpan`1[System.Char])",
+    "System.ReadOnlySpan`1[System.Char] GetPathRoot(System.ReadOnlySpan`1[System.Char])",
+    "System.ReadOnlySpan`1[System.Char] TrimEndingDirectorySeparator(System.ReadOnlySpan`1[System.Char])",
+    "System.String GetFullPath(System.String, System.String)",
+    "System.String GetRelativePath(System.String, System.String)",
+    "System.String Join(System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char])",
+    "System.String Join(System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char])",
+    "System.String Join(System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char])",
+    "System.String Join(System.String, System.String)",
+    "System.String Join(System.String, System.String, System.String)",
+    "System.String Join(System.String, System.String, System.String, System.String)",
+    "System.String Join(System.String[])",
+    "System.String TrimEndingDirectorySeparator(System.String)"
+  ]
+}
diff --git a/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.Path_.NET Core 3.1.snap b/tests/System.IO.Abstractions.Tests/__snapshots__/ApiParityTests.Path_.NET Core 3.1.snap
@@ -11,13 +11,20 @@
     "Boolean EndsInDirectorySeparator(System.String)",
     "Boolean HasExtension(System.ReadOnlySpan`1[System.Char])",
     "Boolean IsPathFullyQualified(System.ReadOnlySpan`1[System.Char])",
+    "Boolean IsPathFullyQualified(System.String)",
     "Boolean IsPathRooted(System.ReadOnlySpan`1[System.Char])",
+    "Boolean TryJoin(System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.Span`1[System.Char], Int32 ByRef)",
+    "Boolean TryJoin(System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.Span`1[System.Char], Int32 ByRef)",
     "System.ReadOnlySpan`1[System.Char] GetDirectoryName(System.ReadOnlySpan`1[System.Char])",
     "System.ReadOnlySpan`1[System.Char] GetExtension(System.ReadOnlySpan`1[System.Char])",
     "System.ReadOnlySpan`1[System.Char] GetFileName(System.ReadOnlySpan`1[System.Char])",
     "System.ReadOnlySpan`1[System.Char] GetFileNameWithoutExtension(System.ReadOnlySpan`1[System.Char])",
     "System.ReadOnlySpan`1[System.Char] GetPathRoot(System.ReadOnlySpan`1[System.Char])",
     "System.ReadOnlySpan`1[System.Char] TrimEndingDirectorySeparator(System.ReadOnlySpan`1[System.Char])",
+    "System.String GetFullPath(System.String, System.String)",
+    "System.String GetRelativePath(System.String, System.String)",
+    "System.String Join(System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char])",
+    "System.String Join(System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char])",
     "System.String Join(System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char], System.ReadOnlySpan`1[System.Char])",
     "System.String Join(System.String, System.String)",
     "System.String Join(System.String, System.String, System.String)",