Fix test for unencrypted field not in field map

django_mongodb_backend/base.py

@@ -160,6 +160,7 @@ def __init__(self, settings_dict, alias=DEFAULT_DB_ALIAS):
  # Cache the `settings_dict` in case we need to check for
  # auto_encryption_opts later.
  self.__dict__["_settings_dict"] = copy.deepcopy(settings_dict)
+ self.encrypted_connection = None
 
  def get_collection(self, name, **kwargs):
  collection = Collection(self.database, name, **kwargs)

django_mongodb_backend/schema.py

@@ -447,16 +447,17 @@ def _create_collection(self, model):
  auto_encryption_opts = self.connection._settings_dict.get("OPTIONS", {}).get(
  "auto_encryption_opts"
  )
- # Use the cached settings dict to create a new connection
- encrypted_connection = self.connection.get_new_connection(
- self.connection._settings_dict
- )
+ if not self.connection.encrypted_connection:
+ # Use the cached settings dict to create a new connection
+ self.encrypted_connection = self.connection.get_new_connection(
+ self.connection._settings_dict
+ )
  # Use the encrypted connection and auto_encryption_opts to create an encrypted client
- encrypted_client = get_encrypted_client(auto_encryption_opts, encrypted_connection)
+ encrypted_client = get_encrypted_client(auto_encryption_opts, self.encrypted_connection)
 
  with contextlib.suppress(EncryptedCollectionError):
  encrypted_client.create_encrypted_collection(
- encrypted_connection[self.connection.database.name],
+ self.encrypted_connection[self.connection.database.name],
  model._meta.db_table,
  model.encrypted_fields_map,
  "local", # TODO: KMS provider should be configurable