Initial assessment and test case for bug fix

Co-authored-by: stefankoegl <184196+stefankoegl@users.noreply.github.com>

Author: Copilot

tests.py

@@ -526,6 +526,16 @@ def test_issue119(self):
         res = jsonpatch.apply_patch(src, patch)
         self.assertEqual(res, dst)
 
+    def test_numeric_string_dict_keys(self):
+        """Test the reported issue with numeric string dict keys"""
+        src = {'1': 'def'}
+        dst = {'test': '1', 'b': 'def'}
+        # This should not raise an exception
+        patch = jsonpatch.make_patch(src, dst)
+        # Verify the patch works as expected
+        res = jsonpatch.apply_patch(src, patch)
+        self.assertEqual(res, dst)
+
     def test_issue120(self):
         """Make sure it avoids casting numeric str dict key to int"""
         src = [{'foobar': {'821b7213_b9e6_2b73_2e9c_cf1526314553': ['Open Work'],

tests/test_issue_bug.py

@@ -0,0 +1,16 @@
+import unittest
+import jsonpatch
+
+class IssueBugTestCase(unittest.TestCase):
+    def test_numeric_string_dict_keys(self):
+        """Test the issue with numeric string dict keys"""
+        src = {'1': 'def'}
+        dst = {'test': '1', 'b': 'def'}
+        # This should not raise an exception
+        patch = jsonpatch.make_patch(src, dst)
+        # Verify the patch works as expected
+        applied = jsonpatch.apply_patch(src, patch)
+        self.assertEqual(applied, dst)
+
+if __name__ == '__main__':
+    unittest.main()