add Net 9 support (#1146)

VerifyTests · Feb 14, 2024 · c77400f · c77400f
1 parent 185d699
commit c77400f
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Showing 46 changed files with 59 additions and 38 deletions.
diff --git a/src/DeterministicTests/DeterministicTests.csproj b/src/DeterministicTests/DeterministicTests.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
     <IsPackageProject>false</IsPackageProject>
     <DisableImplicitNamespaceImports>true</DisableImplicitNamespaceImports>

diff --git a/src/FSharpTests/FSharpTests.fsproj b/src/FSharpTests/FSharpTests.fsproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <GenerateProgramFile>false</GenerateProgramFile>
     <LangVersion>preview</LangVersion>
   </PropertyGroup>

diff --git a/src/FakeDiffTool/FakeDiffTool.csproj b/src/FakeDiffTool/FakeDiffTool.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>bin</OutputPath>
   </PropertyGroup>

diff --git a/src/ModuleInitDocs/ModuleInitDocs.csproj b/src/ModuleInitDocs/ModuleInitDocs.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <RootNamespace>SortedPropertiesTests</RootNamespace>
   </PropertyGroup>
   <ItemGroup>

diff --git a/src/NugetUsage/FixieNugetUsage/FixieNugetUsage.csproj b/src/NugetUsage/FixieNugetUsage/FixieNugetUsage.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <!-- begin-snippet: Fixie-nugets -->

diff --git a/src/NugetUsage/MSTestNugetUsage/MSTestNugetUsage.csproj b/src/NugetUsage/MSTestNugetUsage/MSTestNugetUsage.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <!-- begin-snippet: mstest-nugets -->

diff --git a/src/NugetUsage/NUnitNugetUsage/NUnitNugetUsage.csproj b/src/NugetUsage/NUnitNugetUsage/NUnitNugetUsage.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <!-- begin-snippet: nunit-nugets -->

diff --git a/src/NugetUsage/XunitNugetUsage/XunitNugetUsage.csproj b/src/NugetUsage/XunitNugetUsage/XunitNugetUsage.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <!-- begin-snippet: xunit-nugets -->

diff --git a/src/NullComparer/NullComparer.csproj b/src/NullComparer/NullComparer.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <OutputType Condition=" '$(OS)' == 'Windows_NT' ">WinExe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <ImplicitUsings>disable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <SignAssembly>true</SignAssembly>

diff --git a/src/StaticSettingsTests/StaticSettingsTests.csproj b/src/StaticSettingsTests/StaticSettingsTests.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <IsPackageProject>false</IsPackageProject>
   </PropertyGroup>
   <ItemGroup>

diff --git a/...eForUniqueDirectoryTests.UniqueForTargetFrameworkAndVersion.DotNet9_0.verified/target.txt b/...eForUniqueDirectoryTests.UniqueForTargetFrameworkAndVersion.DotNet9_0.verified/target.txt
@@ -0,0 +1 @@
+UniqueForTargetFrameworkAndVersion
diff --git a/...trictJsonTests/SerializationTests.NestedTargetInvocationException.DotNet9_0.verified.json b/...trictJsonTests/SerializationTests.NestedTargetInvocationException.DotNet9_0.verified.json
@@ -0,0 +1,7 @@
+{
+  "exception": {
+    "Type": "Exception",
+    "Message": "the message",
+    "StackTrace": "at SerializationTests.MethodThatThrows()\nat System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)\nat System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)"
+  }
+}
diff --git a/src/StrictJsonTests/SerializationTests.TargetInvocationException.DotNet9_0.verified.json b/src/StrictJsonTests/SerializationTests.TargetInvocationException.DotNet9_0.verified.json
@@ -0,0 +1,5 @@
+{
+  "Type": "Exception",
+  "Message": "the message",
+  "StackTrace": "at SerializationTests.MethodThatThrows()\nat InvokeStub_SerializationTests.MethodThatThrows(Object, Object, IntPtr*)"
+}
diff --git a/src/StrictJsonTests/StrictJsonTests.csproj b/src/StrictJsonTests/StrictJsonTests.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Fody" Version="6.8.0" PrivateAssets="all" />

diff --git a/src/Verify.ApprovalTestsTransition/Verify.ApprovalTestsTransition.csproj b/src/Verify.ApprovalTestsTransition/Verify.ApprovalTestsTransition.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT'">net472;net48</TargetFrameworks>
-    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="ProjectDefaults" Version="1.0.110" PrivateAssets="all" />

diff --git a/src/Verify.ClipboardAccept.Tests/Verify.ClipboardAccept.Tests.csproj b/src/Verify.ClipboardAccept.Tests/Verify.ClipboardAccept.Tests.csproj
@@ -2,7 +2,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">net48</TargetFrameworks>
-    <TargetFrameworks>$(TargetFrameworks);net8.0</TargetFrameworks>
+    <TargetFrameworks>$(TargetFrameworks);net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />

diff --git a/src/Verify.ClipboardAccept/Verify.ClipboardAccept.csproj b/src/Verify.ClipboardAccept/Verify.ClipboardAccept.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT'">net472;net48</TargetFrameworks>
-    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="DiffEngine" Version="15.2.0" />

diff --git a/src/Verify.ExceptionParsing.Tests/Verify.ExceptionParsing.Tests.csproj b/src/Verify.ExceptionParsing.Tests/Verify.ExceptionParsing.Tests.csproj
@@ -2,7 +2,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">net48</TargetFrameworks>
-    <TargetFrameworks>$(TargetFrameworks);net8.0</TargetFrameworks>
+    <TargetFrameworks>$(TargetFrameworks);net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />

diff --git a/src/Verify.Expecto.DerivePaths.Tests/Verify.Expecto.DerivePaths.Tests.csproj b/src/Verify.Expecto.DerivePaths.Tests/Verify.Expecto.DerivePaths.Tests.csproj
@@ -2,7 +2,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <SignAssembly>False</SignAssembly>
   </PropertyGroup>
   <ItemGroup>

diff --git a/src/Verify.Expecto.Tests/Verify.Expecto.Tests.csproj b/src/Verify.Expecto.Tests/Verify.Expecto.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <SignAssembly>False</SignAssembly>
   </PropertyGroup>
   <ItemGroup>

diff --git a/src/Verify.Expecto/Verify.Expecto.csproj b/src/Verify.Expecto/Verify.Expecto.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Expecto" Version="10.1.0" />

diff --git a/src/Verify.Fixie.Tests/Verify.Fixie.Tests.csproj b/src/Verify.Fixie.Tests/Verify.Fixie.Tests.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
     <PlatformTarget>x64</PlatformTarget>
     <SignAssembly>false</SignAssembly>

diff --git a/src/Verify.Fixie/Verify.Fixie.csproj b/src/Verify.Fixie/Verify.Fixie.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
     <SignAssembly>false</SignAssembly>
     <TestProject>false</TestProject>
     <IsTestProject>false</IsTestProject>

diff --git a/src/Verify.MSTest.DerivePaths.Tests/Verify.MSTest.DerivePaths.Tests.csproj b/src/Verify.MSTest.DerivePaths.Tests/Verify.MSTest.DerivePaths.Tests.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />

diff --git a/src/Verify.MSTest.Tests/Snippets/UniqueForSample.RuntimeAndVersion.DotNet9_0.verified.txt b/src/Verify.MSTest.Tests/Snippets/UniqueForSample.RuntimeAndVersion.DotNet9_0.verified.txt
@@ -0,0 +1 @@
+value
diff --git a/...rify.MSTest.Tests/Snippets/UniqueForSample.RuntimeAndVersionFluent.DotNet9_0.verified.txt b/...rify.MSTest.Tests/Snippets/UniqueForSample.RuntimeAndVersionFluent.DotNet9_0.verified.txt
@@ -0,0 +1 @@
+value
diff --git a/src/Verify.MSTest.Tests/Verify.MSTest.Tests.csproj b/src/Verify.MSTest.Tests/Verify.MSTest.Tests.csproj
@@ -2,7 +2,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">net48</TargetFrameworks>
-    <TargetFrameworks>$(TargetFrameworks);net8.0</TargetFrameworks>
+    <TargetFrameworks>$(TargetFrameworks);net9.0</TargetFrameworks>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
     <PlatformTarget>x64</PlatformTarget>
   </PropertyGroup>

diff --git a/src/Verify.MSTest/Verify.MSTest.csproj b/src/Verify.MSTest/Verify.MSTest.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT'">net472;net48</TargetFrameworks>
-    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="ProjectDefaults" Version="1.0.110" PrivateAssets="all" />

diff --git a/src/Verify.NUnit.DerivePaths.Tests/Verify.NUnit.DerivePaths.Tests.csproj b/src/Verify.NUnit.DerivePaths.Tests/Verify.NUnit.DerivePaths.Tests.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />

diff --git a/src/Verify.NUnit.Tests/Snippets/UniqueForSample.RuntimeAndVersion.DotNet9_0.verified.txt b/src/Verify.NUnit.Tests/Snippets/UniqueForSample.RuntimeAndVersion.DotNet9_0.verified.txt
@@ -0,0 +1 @@
+value
diff --git a/...erify.NUnit.Tests/Snippets/UniqueForSample.RuntimeAndVersionFluent.DotNet9_0.verified.txt b/...erify.NUnit.Tests/Snippets/UniqueForSample.RuntimeAndVersionFluent.DotNet9_0.verified.txt
@@ -0,0 +1 @@
+value
diff --git a/src/Verify.NUnit.Tests/Verify.NUnit.Tests.csproj b/src/Verify.NUnit.Tests/Verify.NUnit.Tests.csproj
@@ -2,7 +2,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">net48</TargetFrameworks>
-    <TargetFrameworks>$(TargetFrameworks);net8.0</TargetFrameworks>
+    <TargetFrameworks>$(TargetFrameworks);net9.0</TargetFrameworks>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
     <PlatformTarget>x64</PlatformTarget>
   </PropertyGroup>

diff --git a/src/Verify.NUnit/Verify.NUnit.csproj b/src/Verify.NUnit/Verify.NUnit.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT'">net472;net48</TargetFrameworks>
-    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="NUnit" Version="4.0.1" />

diff --git a/src/Verify.Tests/Comparer/ComparerTests.cs b/src/Verify.Tests/Comparer/ComparerTests.cs
@@ -10,7 +10,7 @@ public async Task Instance()
         await Verify("thetext", settings);
     }
 
-#if NET8_0
+#if NET9_0
     [Fact]
     public async Task Instance_with_message()
     {

diff --git a/src/Verify.Tests/CultureToDateBuilder.cs b/src/Verify.Tests/CultureToDateBuilder.cs
@@ -1,4 +1,4 @@
-#if NET8_0
+#if NET9_0
 public class CultureToDateBuilder
 {
     const string monthDayFormat = "MMMM MMM dddd ddd";

diff --git a/src/Verify.Tests/NewLineTests.cs b/src/Verify.Tests/NewLineTests.cs
@@ -38,7 +38,7 @@ public async Task WithNestedNewlineAddedByScrubber()
     public Task Newlines() =>
         Verify("a\r\nb\nc\rd\r\n");
 
-#if NET8_0
+#if NET9_0
     [Fact]
     public async Task StringWithDifferingNewline()
     {

diff --git a/src/Verify.Tests/ThrowsTests.cs b/src/Verify.Tests/ThrowsTests.cs
@@ -49,7 +49,7 @@ void IgnoreStackTraceSettingsGlobal()
 
     #endregion
 
-#if NET8_0
+#if NET9_0
 
     #region TestMethodThatThrowsTask
 

diff --git a/src/Verify.Xunit.DerivePaths.Tests/Verify.Xunit.DerivePaths.Tests.csproj b/src/Verify.Xunit.DerivePaths.Tests/Verify.Xunit.DerivePaths.Tests.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <RootNamespace>Verify.DerivePaths.Tests</RootNamespace>
   </PropertyGroup>
   <ItemGroup>

diff --git a/src/Verify.Xunit.Tests/Snippets/UniqueForSample.RuntimeAndVersion.DotNet9_0.verified.txt b/src/Verify.Xunit.Tests/Snippets/UniqueForSample.RuntimeAndVersion.DotNet9_0.verified.txt
@@ -0,0 +1 @@
+value
diff --git a/src/Verify.Xunit.Tests/Verify.Xunit.Tests.csproj b/src/Verify.Xunit.Tests/Verify.Xunit.Tests.csproj
@@ -2,7 +2,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">net48</TargetFrameworks>
-    <TargetFrameworks>$(TargetFrameworks);net8.0</TargetFrameworks>
+    <TargetFrameworks>$(TargetFrameworks);net9.0</TargetFrameworks>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
     <PlatformTarget>x64</PlatformTarget>
   </PropertyGroup>

diff --git a/src/Verify.Xunit/Verify.Xunit.csproj b/src/Verify.Xunit/Verify.Xunit.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT'">net472;net48</TargetFrameworks>
-    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="xunit.abstractions" Version="2.0.3" />

diff --git a/src/Verify.sln.DotSettings b/src/Verify.sln.DotSettings
@@ -3,4 +3,5 @@
 	<s:Boolean x:Key="/Default/Environment/InjectedLayers/FileInjectedLayer/=BC2D76E54BBA65499DDED823A15FC688/@KeyIndexDefined">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/InjectedLayers/InjectedLayerCustomization/=FileBC2D76E54BBA65499DDED823A15FC688/@KeyIndexDefined">True</s:Boolean>
 	<s:Double x:Key="/Default/Environment/InjectedLayers/InjectedLayerCustomization/=FileBC2D76E54BBA65499DDED823A15FC688/RelativePriority/@EntryValue">1</s:Double>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Namer/@EntryIndexedValue">True</s:Boolean>
 </wpf:ResourceDictionary>
diff --git a/src/Verify/Naming/Namer.cs b/src/Verify/Naming/Namer.cs
@@ -221,6 +221,8 @@ internal static (string runtime, Version Version) GetRuntimeAndVersion()
         return ("DotNet", new(7, 0));
 #elif NET8_0
         return ("DotNet", new(8, 0));
+#elif NET9_0
+        return ("DotNet", new(9, 0));
 #elif NETFRAMEWORK
         // Mono can only be detected at runtime, and will use .NET Framework targets, so we have to check it first.
         if (RuntimeInformation.FrameworkDescription.StartsWith("Mono", StringComparison.OrdinalIgnoreCase))

diff --git a/src/Verify/Verify.csproj b/src/Verify/Verify.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT'">net472;net48</TargetFrameworks>
-    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
     <DiffEngine>true</DiffEngine>
   </PropertyGroup>
   <PropertyGroup Condition="$(DiffEngine)">
@@ -10,7 +10,7 @@
   <ItemGroup>
     <PackageReference Include="Polyfill" Version="2.3.0" PrivateAssets="all" />
     <PackageReference Include="System.IO.Compression" Version="4.3.0" Condition="$(TargetFrameworkIdentifier) == '.NETFramework'" />
-    <PackageReference Include="System.IO.Hashing" Version="8.0.0" Condition="$(TargetFrameworkIdentifier) == '.NETFramework' or $(TargetFramework) == 'net6.0' or $(TargetFramework) == 'net7.0' or $(TargetFramework) == 'net8.0'" />
+    <PackageReference Include="System.IO.Hashing" Version="8.0.0" Condition="$(TargetFrameworkIdentifier) == '.NETFramework' or $(TargetFramework) == 'net6.0' or $(TargetFramework) == 'net7.0' or $(TargetFramework) == 'net8.0' or $(TargetFramework) == 'net9.0'" />
     <PackageReference Include="System.Memory" Version="4.5.5" Condition="$(TargetFrameworkIdentifier) == '.NETFramework'" />
     <PackageReference Include="DiffEngine" Version="15.2.0" />
     <PackageReference Include="EmptyFiles" Version="8.1.0" PrivateAssets="None" />

diff --git a/src/appveyor.yml b/src/appveyor.yml
@@ -1,7 +1,7 @@
 image:
   - Visual Studio 2022
-  - macOS
-  - Ubuntu
+# - macOS
+# - Ubuntu
 environment:
   DOTNET_NOLOGO: true
   DOTNET_CLI_TELEMETRY_OPTOUT: true

diff --git a/src/global.json b/src/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "8.0.200",
+    "version": "9.0.100-preview.1.24101.2",
     "allowPrerelease": true,
     "rollForward": "latestFeature"
   }