Update SA1402 to treat record structs the same way as structs

#3542

Author: bjornhellander

StyleCop.Analyzers/StyleCop.Analyzers.CodeFixes/MaintainabilityRules/SA1402CodeFixProvider.cs

@@ -91,6 +91,7 @@ private static async Task<Solution> GetTransformedSolutionAsync(Document documen
                     case SyntaxKind.EnumDeclaration:
                     case SyntaxKind.DelegateDeclaration:
                     case SyntaxKindEx.RecordDeclaration:
+                    case SyntaxKindEx.RecordStructDeclaration:
                         nodesToRemoveFromExtracted.Add(child);
                         break;
 

StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp10/MaintainabilityRules/SA1402CSharp10ForRecordStructUnitTests.cs

@@ -0,0 +1,18 @@
+// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+
+#nullable disable
+
+namespace StyleCop.Analyzers.Test.CSharp10.MaintainabilityRules
+{
+    using StyleCop.Analyzers.Test.MaintainabilityRules;
+
+    public class SA1402CSharp10ForRecordStructUnitTests : SA1402ForBlockDeclarationUnitTestsBase
+    {
+        public override string Keyword => "record struct";
+
+        protected override string SettingKeyword => "struct";
+
+        protected override bool IsConfiguredAsTopLevelTypeByDefault => false;
+    }
+}

StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp11/MaintainabilityRules/SA1402CSharp11ForRecordStructUnitTests.cs

@@ -0,0 +1,11 @@
+// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+
+namespace StyleCop.Analyzers.Test.CSharp11.MaintainabilityRules
+{
+    using StyleCop.Analyzers.Test.CSharp10.MaintainabilityRules;
+
+    public class SA1402CSharp11ForRecordStructUnitTests : SA1402CSharp10ForRecordStructUnitTests
+    {
+    }
+}

StyleCop.Analyzers/StyleCop.Analyzers/MaintainabilityRules/SA1402FileMayOnlyContainASingleType.cs

@@ -120,6 +120,7 @@ private static bool IsRelevantType(SyntaxNode node, StyleCopSettings settings)
                 isRelevant = topLevelTypes.Contains(TopLevelType.Interface);
                 break;
             case SyntaxKind.StructDeclaration:
+            case SyntaxKindEx.RecordStructDeclaration:
                 isRelevant = topLevelTypes.Contains(TopLevelType.Struct);
                 break;
             case SyntaxKind.EnumDeclaration: