Some minor fixes before new version release (#2686)

* Updated per feedback. Updated the ConfigParser TryParse method to take into account _s in net10.0 and beyond enum names, and updated the ConfigParserTests to take this update into account.

* update Microsoft.CodeAnalysis.CSharp to 4.12.0 to stop referencing an old version of System.Collections.Immutable

* add new test cases, don't remove existing ones

---------

Co-authored-by: Parker Bibus <parkerbibus@microsoft.com>

Author: adamsitnik

build/common.props

@@ -23,6 +23,8 @@
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
 
     <Nullable>annotations</Nullable>
+    <!-- Lets supress the  "System.Collections.Immutable 8.0.0 doesn't support netcoreapp3.1" warning -->
+    <SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings>
   </PropertyGroup>
 
   <ItemGroup>

src/BenchmarkDotNet/BenchmarkDotNet.csproj

@@ -22,9 +22,9 @@
     <PackageReference Include="Perfolizer" Version="[0.4.0]" />
     <PackageReference Include="Microsoft.Diagnostics.Tracing.TraceEvent" Version="3.1.8" PrivateAssets="contentfiles;analyzers" />
     <PackageReference Include="Microsoft.DotNet.PlatformAbstractions" Version="3.1.6" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.12.0" />
     <!-- Do not update these packages, or else netcoreapp3.1 may no longer work -->
     <PackageReference Include="System.Management" Version="6.0.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.5.0" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0" />

src/BenchmarkDotNet/ConsoleArguments/ConfigParser.cs

@@ -774,10 +774,17 @@ private static string GetCoreRunToolchainDisplayName(IReadOnlyList<FileInfo> pat
         internal static bool TryParse(string runtime, out RuntimeMoniker runtimeMoniker)
         {
             int index = runtime.IndexOf('-');
+            if (index >= 0)
+            {
+                runtime = runtime.Substring(0, index);
+            }
 
-            return index < 0
-                ? Enum.TryParse<RuntimeMoniker>(runtime.Replace(".", string.Empty), ignoreCase: true, out runtimeMoniker)
-                : Enum.TryParse<RuntimeMoniker>(runtime.Substring(0, index).Replace(".", string.Empty), ignoreCase: true, out runtimeMoniker);
+            // Monikers older than Net 10 don't use any version delimiter, newer monikers use _ delimiter.
+            if (Enum.TryParse(runtime.Replace(".", string.Empty), ignoreCase: true, out runtimeMoniker))
+            {
+                return true;
+            }
+            return Enum.TryParse(runtime.Replace('.', '_'), ignoreCase: true, out runtimeMoniker);
         }
     }
 }

tests/BenchmarkDotNet.Tests/ConfigParserTests.cs

@@ -384,11 +384,17 @@ public void NetFrameworkMonikerParsedCorrectly(string tfm)
 
         [Theory]
         [InlineData("net50")]
+        [InlineData("net5.0")]
         [InlineData("net60")]
+        [InlineData("net6.0")]
         [InlineData("net70")]
+        [InlineData("net7.0")]
         [InlineData("net80")]
+        [InlineData("net8.0")]
         [InlineData("net90")]
+        [InlineData("net9.0")]
         [InlineData("net10_0")]
+        [InlineData("net10.0")]
         public void NetMonikersAreRecognizedAsNetCoreMonikers(string tfm)
         {
             var config = ConfigParser.Parse(new[] { "-r", tfm }, new OutputLogger(Output)).config;