dict key ignore case - fixes #341

Author: seperman

deepdiff/diff.py

@@ -516,6 +516,8 @@ def _get_clean_to_keys_mapping(self, keys, level):
                 clean_key = KEY_TO_VAL_STR.format(type_, clean_key)
             else:
                 clean_key = key
+            if self.ignore_string_case:
+                clean_key = clean_key.lower()
             if clean_key in result:
                 logger.warning(('{} and {} in {} become the same key when ignore_numeric_type_changes'
                                 'or ignore_numeric_type_changes are set to be true.').format(
@@ -559,7 +561,7 @@ def _diff_dict(
         else:
             t1_keys = OrderedSet(t1.keys())
             t2_keys = OrderedSet(t2.keys())
-        if self.ignore_string_type_changes or self.ignore_numeric_type_changes:
+        if self.ignore_string_type_changes or self.ignore_numeric_type_changes or self.ignore_string_case:
             t1_clean_to_keys = self._get_clean_to_keys_mapping(keys=t1_keys, level=level)
             t2_clean_to_keys = self._get_clean_to_keys_mapping(keys=t2_keys, level=level)
             t1_keys = OrderedSet(t1_clean_to_keys.keys())

tests/test_diff_text.py

@@ -297,6 +297,17 @@ def test_string_difference_ignore_case(self):
         result = {}
         assert result == ddiff
 
+    def test_string_dict_key_ignore_case(self):
+        t1 = {'User': {'AboutMe': 1, 'ALIAS': 1}}
+        t2 = {'User': {'Alias': 1, 'AboutMe': 1}}
+        ddiff = DeepDiff(t1, t2)
+        result = {'dictionary_item_added': ["root['User']['Alias']"], 'dictionary_item_removed': ["root['User']['ALIAS']"]}
+        assert result == ddiff
+
+        ddiff = DeepDiff(t1, t2, ignore_string_case=True)
+        result = {}
+        assert result == ddiff
+
     def test_diff_quote_in_string(self):
         t1 = {
             "a']['b']['c": 1