Adding test-case

Author: akshat62

Lib/test/test_annotationlib.py

@@ -393,6 +393,17 @@ def g(
                 "z": "a[(int, str), 5]",
             },
         )
+        
+    def test_set_ordering_consistency(self):
+        """Test that sets of types are consistently ordered in string representations."""
+        # Test with direct set annotations
+        def g1(x: {int, str}):
+            pass
+        
+        anno_g1 = get_annotations(g1, format=Format.STRING)
+        
+        # The set should have elements sorted by name (int before str)
+        self.assertEqual(anno_g1["x"], "{int, str}")
 
     def test_nested_expressions(self):
         def f(