fix test_openapi_utils

Author: erictapen

tests/test_openapi_utils.py

@@ -515,7 +515,7 @@ def test_char_fields_with_error_codes():
     assert slug.error_codes == {"invalid", "null_characters_not_allowed"}
     assert regex.error_codes == {"invalid", "required", "null_characters_not_allowed"}
     assert uuid.error_codes == {"invalid", "required", "null_characters_not_allowed"}
-    assert ip.error_codes == {"invalid", "null_characters_not_allowed"}
+    assert ip.error_codes == {"invalid", "null_characters_not_allowed", "max_length"}
 
 
 class NumberForm(forms.Form):