Use specific reference assemblies to resolve test errors, mark fixer shared.

Author: 333fred

src/CommunityToolkit.Mvvm.Fixers/FieldReferenceForObservablePropertyFieldFixer.cs

@@ -3,6 +3,7 @@
 // See the LICENSE file in the project root for more information.
 
 using System.Collections.Immutable;
+using System.Composition;
 using System.Diagnostics;
 using System.Linq;
 using System.Threading;
@@ -18,7 +19,7 @@
 namespace CommunityToolkit.Mvvm.Fixers;
 
 #pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
-[ExportCodeFixProvider(LanguageNames.CSharp)]
+[ExportCodeFixProvider(LanguageNames.CSharp), Shared]
 public class FieldReferenceForObservablePropertyFieldFixer : CodeFixProvider
 {
     public override ImmutableArray<string> FixableDiagnosticIds { get; } = ImmutableArray.Create(DiagnosticDescriptors.FieldReferenceForObservablePropertyFieldId);
@@ -60,7 +61,7 @@ public override async Task RegisterCodeFixesAsync(CodeFixContext context)
 
     }
 
-    private async Task<Document> UpdateReference(Document document, IdentifierNameSyntax fieldReference, string propertyName, CancellationToken cancellationToken)
+    private static async Task<Document> UpdateReference(Document document, IdentifierNameSyntax fieldReference, string propertyName, CancellationToken cancellationToken)
     {
         IdentifierNameSyntax propertyReference = SyntaxFactory.IdentifierName(propertyName);
         SyntaxNode originalRoot = await fieldReference.SyntaxTree.GetRootAsync(cancellationToken);

tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_FieldReferenceForObservablePropertyFieldFixer.cs

@@ -58,6 +58,7 @@ void M()
         {
             TestCode = original,
             FixedCode = @fixed,
+            ReferenceAssemblies = ReferenceAssemblies.Net.Net60
         };
 
         test.TestState.AdditionalReferences.Add(typeof(ObservableObject).Assembly);
@@ -119,6 +120,7 @@ void M()
         {
             TestCode = original,
             FixedCode = @fixed,
+            ReferenceAssemblies = ReferenceAssemblies.Net.Net60
         };
 
         test.TestState.AdditionalReferences.Add(typeof(ObservableObject).Assembly);
@@ -188,6 +190,7 @@ void M()
         {
             TestCode = original,
             FixedCode = @fixed,
+            ReferenceAssemblies = ReferenceAssemblies.Net.Net60
         };
 
         test.TestState.AdditionalReferences.Add(typeof(ObservableObject).Assembly);
@@ -255,6 +258,7 @@ void M()
         {
             TestCode = original,
             FixedCode = @fixed,
+            ReferenceAssemblies = ReferenceAssemblies.Net.Net60
         };
 
         test.TestState.AdditionalReferences.Add(typeof(ObservableObject).Assembly);