Add letter number among valid identifiers in class name (#13868)

* Add letter number among valid identifiers in class name

* Update src/Microsoft.TestPlatform.AdapterUtilities/ManagedNameUtilities/ManagedNameHelper.Reflection.cs

Co-authored-by: Amaury Levé <[email protected]>

* Update test/Microsoft.TestPlatform.AdapterUtilities.UnitTests/TestClasses.cs

Co-authored-by: Amaury Levé <[email protected]>

* Update test/Microsoft.TestPlatform.AdapterUtilities.UnitTests/ManagedNameUtilities/ManagedNameGeneratorTests.cs

Co-authored-by: Amaury Levé <[email protected]>

---------

Co-authored-by: Amaury Levé <[email protected]>

Author: nohwnd

src/Microsoft.TestPlatform.AdapterUtilities/ManagedNameUtilities/ManagedNameHelper.Reflection.cs

@@ -563,15 +563,17 @@ private static bool NeedsEscaping(char c, int pos)
         }
 
         if (c == '_'
-            || char.IsLetterOrDigit(c) // Lu, Ll, Lt, Lm, Lo, or Nl
+            // 'Digit' does not include letter numbers, which are valid identifiers as per docs https://learn.microsoft.com/dotnet/csharp/fundamentals/coding-style/identifier-names'.
+            || char.IsLetterOrDigit(c) // Lu, Ll, Lt, Lm, Lo, or Nd
             )
         {
             return false;
         }
 
         var category = CharUnicodeInfo.GetUnicodeCategory(c);
         return category
-            is not UnicodeCategory.NonSpacingMark         // Mn
+            is not UnicodeCategory.LetterNumber           // Nl
+            and not UnicodeCategory.NonSpacingMark        // Mn
             and not UnicodeCategory.SpacingCombiningMark  // Mc
             and not UnicodeCategory.ConnectorPunctuation  // Pc
             and not UnicodeCategory.Format;               // Cf

test/Microsoft.TestPlatform.AdapterUtilities.UnitTests/ManagedNameUtilities/ManagedNameGeneratorTests.cs

@@ -3,6 +3,8 @@
 
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
+using TestClasses;
+
 namespace Microsoft.TestPlatform.AdapterUtilities.ManagedNameUtilities.UnitTests;
 
 [TestClass]
@@ -123,4 +125,18 @@ public void Namespaceless_InnerRecordMembers_ShouldNotReportANamespace_InHierarc
         Assert.AreEqual("Method0", managedMethodName);
         Assert.IsNull(hierarchyValues[HierarchyConstants.Levels.NamespaceIndex]);
     }
+
+    [TestMethod]
+    public void SpecialCharacters_HierarchyShouldNotWrapMembersWithSpecialCharactersInSingleQuotes()
+    {
+        var methodBase = typeof(Class狧麱狵錋狾龍龪啊阿埃挨哎唉0u㐀㐁㐂㐃㐄㐅㐆㐇6ⅶ０ǒoU1U2U38丂丄丅丆丏丒丟).GetMethod("Method0")!;
+
+        // Act
+        ManagedNameHelper.GetManagedName(methodBase, out var managedTypeName, out var managedMethodName, out var _);
+
+        // Assert
+        Assert.AreEqual("TestClasses.Class狧麱狵錋狾龍龪啊阿埃挨哎唉0u㐀㐁㐂㐃㐄㐅㐆㐇6ⅶ０ǒoU1U2U38丂丄丅丆丏丒丟", managedTypeName);
+        Assert.AreEqual("Method0", managedMethodName);
+    }
+
 }

test/Microsoft.TestPlatform.AdapterUtilities.UnitTests/TestClasses.cs

@@ -133,8 +133,17 @@ public void Overload0(Tuple<Tuple<string[,], int>> t0) { }
         public void Overload0(Tuple<Tuple<string>, Tuple<int>> t) { }
         public void Overload0<U>(Tuple<Tuple<Outer<U>.Inner<U>>> t) { }
     }
+
+    public class Class狧麱狵錋狾龍龪啊阿埃挨哎唉0u㐀㐁㐂㐃㐄㐅㐆㐇6ⅶ０ǒoU1U2U38丂丄丅丆丏丒丟
+    {
+        public void Method0()
+        {
+
+        }
+    }
 }
 
+
 #pragma warning restore IDE0161 // Convert to file-scoped namespace
 #pragma warning restore IDE0060 // Remove unused parameter
 #pragma warning restore CA1822 // Mark members as static