Add test for JsonPointerException on missing OrderedDict member

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

Author: Copilot

tests.py

@@ -4,6 +4,7 @@
 import copy
 import doctest
 import unittest
+from collections import OrderedDict
 
 import jsonpointer
 from jsonpointer import resolve_pointer, EndOfList, JsonPointerException, \
@@ -216,6 +217,24 @@ def test_trailing_escape(self):
     def test_invalid_escape(self):
         self.assertRaises(JsonPointerException, JsonPointer, '/foo/bar~2')
 
+    def test_ordereddict_member_not_found(self):
+        # Resolving a pointer to a non-existent key in an OrderedDict should
+        # raise JsonPointerException (not a bare KeyError or any other exception)
+        doc = OrderedDict([
+            ('$schema', 'http://json-schema.org/draft-07/schema#'),
+            ('$id', '/sports_field'),
+            ('title', 'Field'),
+            ('description', 'A sports field description.'),
+            ('type', 'object'),
+            ('properties', OrderedDict([
+                ('description', OrderedDict([
+                    ('description', 'Field description'),
+                    ('type', 'string'),
+                ])),
+            ])),
+        ])
+        self.assertRaises(JsonPointerException, resolve_pointer, doc, '/src')
+
 
 class ToLastTests(unittest.TestCase):