added .NET 9 support

Author: Havunen

.github/workflows/ci.yml

@@ -22,6 +22,7 @@ jobs:
            6.x
            7.x
            8.x
+           9.x
 
       - name: dotnet build
         run: dotnet build

README.md

@@ -67,16 +67,16 @@ This test deserializes a JSON patch document of 8 operations and applies the cha
 
 See [SystemTextJsonPatch.Benchmark](https://github.com/Havunen/SystemTextJsonPatch/tree/main/SystemTextJsonPatch.Benchmark) for more details.
 
-BenchmarkDotNet v0.14.0, Windows 11 (10.0.22631.4169/23H2/2023Update/SunValley3)
+BenchmarkDotNet v0.14.0, Windows 11 (10.0.22631.4460/23H2/2023Update/SunValley3)
 AMD Ryzen 9 5950X, 1 CPU, 32 logical and 16 physical cores
-.NET SDK 9.0.100-rc.1.24452.12
-  [Host]     : .NET 8.0.8 (8.0.824.36612), X64 RyuJIT AVX2
-  Job-MZQQSH : .NET 8.0.8 (8.0.824.36612), X64 RyuJIT AVX2
+.NET SDK 9.0.100
+  [Host]     : .NET 9.0.0 (9.0.24.52809), X64 RyuJIT AVX2
+  Job-ZXROHW : .NET 9.0.0 (9.0.24.52809), X64 RyuJIT AVX2
 
 WarmupCount=2
 
-| Method              | Mean       | Error     | StdDev    | Gen0   | Gen1   | Allocated |
-|-------------------- |-----------:|----------:|----------:|-------:|-------:|----------:|
-| SystemTextJsonPatch |   4.297 us | 0.0364 us | 0.0340 us | 0.2975 |      - |   4.98 KB |
-| MarvinJsonPatch     | 764.999 us | 9.9837 us | 8.3368 us | 3.9063 | 1.9531 |  95.41 KB |
-| AspNetCoreJsonPatch |  16.692 us | 0.0996 us | 0.0932 us | 2.6550 | 0.0610 |  43.55 KB |
+| Method              | Mean       | Error      | StdDev     | Gen0   | Gen1   | Allocated |
+|-------------------- |-----------:|-----------:|-----------:|-------:|-------:|----------:|
+| SystemTextJsonPatch |   3.641 us |  0.0168 us |  0.0149 us | 0.2747 |      - |   4.63 KB |
+| MarvinJsonPatch     | 701.319 us | 13.7540 us | 16.8912 us | 3.9063 | 1.9531 |   95.3 KB |
+| AspNetCoreJsonPatch |  14.871 us |  0.2871 us |  0.2820 us | 2.6245 | 0.0916 |  43.07 KB |

SystemTextJsonPatch.ApiTest/SystemTextJsonPatch.ApiTest.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>

SystemTextJsonPatch.Benchmark/SystemTextJsonPatch.Benchmark.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>disable</Nullable>
     <IsPackable>false</IsPackable>
@@ -12,7 +12,7 @@
   <ItemGroup>
     <PackageReference Include="BenchmarkDotNet" Version="0.14.0" />
     <PackageReference Include="Marvin.JsonPatch" Version="2.2.1" />
-    <PackageReference Include="Microsoft.AspNetCore.JsonPatch" Version="8.0.10" />
+    <PackageReference Include="Microsoft.AspNetCore.JsonPatch" Version="9.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
   </ItemGroup>
 

SystemTextJsonPatch.Console/SystemTextJsonPatch.Console.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <IsPackable>false</IsPackable>
     <IsPublishable>false</IsPublishable>

SystemTextJsonPatch.Tests/SystemTextJsonPatch.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net7.0;net6.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net7.0;net6.0;net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <IsPublishable>false</IsPublishable>
     <IsUnitTestProject>True</IsUnitTestProject>

SystemTextJsonPatch/SystemTextJsonPatch.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <Description>SystemTextJson is JSON Patch (JsonPatchDocument) RFC 6902 implementation for .NET using System.Text.Json</Description>
-    <TargetFrameworks>netstandard2.0;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
     <NoWarn>$(NoWarn);CS1591</NoWarn>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <PackageTags>aspnetcore;json;jsonpatch;system.text.json;rfc6902;</PackageTags>
@@ -36,7 +36,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(targetframework)' == 'netstandard2.0'">
-    <PackageReference Include="System.Text.Json" Version="8.0.5" />
+    <PackageReference Include="System.Text.Json" Version="9.0.0" />
   </ItemGroup>
 
   <ItemGroup>