Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-anon-119.cs

@@ -0,0 +1,27 @@
+
+
+// Test case for bug: #349034
+
+using System;
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+class Test {
+        private static void TestNaturalSort()
+        {
+            Comparison<string> naturalSortComparer = (left, right) => {
+                return Regex.Replace(left ?? "", @"([\d]+)|([^\d]+)", m =>
+(m.Value.Length > 0 && char.IsDigit(m.Value[0])) ?
+m.Value.PadLeft(Math.Max((left ?? "").Length, (right ?? "").Length)) :
+m.Value).CompareTo(Regex.Replace(right ?? "", @"([\d]+)|([^\d]+)", m =>
+(m.Value.Length > 0 && char.IsDigit(m.Value[0])) ?
+m.Value.PadLeft(Math.Max((left ?? "").Length, (right ?? "").Length)) :
+m.Value));
+            };
+        }
+
+        public static void Main ()
+        {
+                TestNaturalSort ();
+        }
+}