add runes to known safe types

FastCloner.Tests/SpecialCaseTests.cs

@@ -973,6 +973,52 @@ public unsafe void Test_Unnamed_Type()
         });
     }
 
+    [Test]
+    public void Test_Rune()
+    {
+        // Arrange
+        Rune obj = new Rune(0x1F44D);
+
+        // Act
+        Rune result = obj.DeepClone();
+
+        // Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(result, Is.EqualTo(obj));
+            Assert.That(result, Is.EqualTo(obj));
+            Assert.That(result.Value, Is.EqualTo(obj.Value));
+            Assert.That(result.ToString(), Is.EqualTo("👍"));
+        });
+    }
+
+    [Test]
+    public void Test_RuneContainer()
+    {
+        // Arrange
+        RuneContainer container = new RuneContainer
+        {
+            // Emoji '🚀' (ROCKET) - Unicode U+1F680
+            RuneValue = new Rune(0x1F680)
+        };
+
+        // Act
+        RuneContainer result = container.DeepClone();
+
+        // Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(ReferenceEquals(result, container), Is.False);
+            Assert.That(result.RuneValue, Is.EqualTo(container.RuneValue));
+            Assert.That(result.RuneValue.ToString(), Is.EqualTo("🚀"));
+        });
+    }
+
+    public class RuneContainer
+    {
+        public Rune RuneValue { get; set; }
+    }
+
     [Test]
     public void Test_TimeSpan()
     {

FastCloner/Code/FastClonerSafeTypes.cs

@@ -1,5 +1,6 @@
 using System.Collections.Concurrent;
 using System.Reflection;
+using System.Text;
 
 namespace FastCloner.Code;
 
@@ -28,6 +29,7 @@ internal static class FastClonerSafeTypes
         [typeof(nint)] = true,
         [typeof(nuint)] = true,
         [typeof(Guid)] = true,
+        [typeof(Rune)] = true,
 
         // Time-related types
         [typeof(TimeSpan)] = true,