Add reproducers for S1144 FN/FP

analyzers/src/SonarAnalyzer.CSharp/Rules/UnusedPrivateMember.cs

@@ -33,13 +33,13 @@ public sealed class UnusedPrivateMember : SonarDiagnosticAnalyzer
 
         private static readonly DiagnosticDescriptor RuleS1144 = DescriptorFactory.Create(S1144DiagnosticId, S1144MessageFormat);
         private static readonly DiagnosticDescriptor RuleS4487 = DescriptorFactory.Create(S4487DiagnosticId, S4487MessageFormat);
-        private static readonly ImmutableArray<KnownType> IgnoredTypes =
-            ImmutableArray.Create(
-                KnownType.UnityEditor_AssetModificationProcessor,
-                KnownType.UnityEditor_AssetPostprocessor,
-                KnownType.UnityEngine_MonoBehaviour,
-                KnownType.UnityEngine_ScriptableObject,
-                KnownType.Microsoft_EntityFrameworkCore_Migrations_Migration);
+
+        private static readonly ImmutableArray<KnownType> IgnoredTypes = ImmutableArray.Create(
+            KnownType.UnityEditor_AssetModificationProcessor,
+            KnownType.UnityEditor_AssetPostprocessor,
+            KnownType.UnityEngine_MonoBehaviour,
+            KnownType.UnityEngine_ScriptableObject,
+            KnownType.Microsoft_EntityFrameworkCore_Migrations_Migration);
 
         public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics { get; } = ImmutableArray.Create(RuleS1144, RuleS4487);
         protected override bool EnableConcurrentExecution => false;

analyzers/tests/SonarAnalyzer.UnitTest/TestCases/UnusedPrivateMember.CSharp7.cs

@@ -199,4 +199,23 @@ private enum Y
             B
         }
     }
+
+    // https://github.com/SonarSource/sonar-dotnet/issues/6699
+    public class Repro_6699
+    {
+        public void MethodUsingLocalMethod()
+        {
+            void LocalMethod() { } // FN
+        }
+    }
+
+    // https://github.com/SonarSource/sonar-dotnet/issues/6724
+    public class Repro_6724
+    {
+        public int PrivateGetter { private get; set; } // FN
+        public int PrivateSetter { get; private set; } // FN
+
+        public int ExpressionBodiedPropertyWithPrivateGetter { private get => 1; set => _ = value; } // FN
+        public int ExpressionBodiedPropertyWithPrivateSetter { get => 1; private set => _ = value; } // FN
+    }
 }

analyzers/tests/SonarAnalyzer.UnitTest/TestCases/UnusedPrivateMember.CSharp9.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Text;
 using System.Runtime.InteropServices;
 
 namespace Tests.Diagnostics
@@ -119,4 +120,15 @@ private record PrivateRecordRef
         [DllImport("user32.dll")]
         private static extern bool ExternalMethod(ref PrivateRecordRef reference);
     }
+
+    // https://github.com/SonarSource/sonar-dotnet/issues/7904
+    public sealed record Repro_7904
+    {
+        // Used by the runtime to create a string representation of the record.
+        // See also https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/record#printmembers-formatting-in-derived-records
+        private bool PrintMembers(StringBuilder builder) // Noncompliant FP
+        {
+            return true;
+        }
+    }
 }