fix black formatting

tests/document/test_instance.py

@@ -1615,7 +1615,7 @@ class TestInstance(MongoDBTestCase):
         self.assertEqual(person.active, False)
 
     def test__get_changed_fields_same_ids_reference_field_does_not_enters_infinite_loop_embedded_doc(
-        self
+        self,
     ):
         # Refers to Issue #1685
         class EmbeddedChildModel(EmbeddedDocument):
@@ -1629,7 +1629,7 @@ class TestInstance(MongoDBTestCase):
         self.assertEqual(changed_fields, [])
 
     def test__get_changed_fields_same_ids_reference_field_does_not_enters_infinite_loop_different_doc(
-        self
+        self,
     ):
         # Refers to Issue #1685
         class User(Document):

tests/fields/test_complex_datetime_field.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 import datetime
-import math
 import itertools
+import math
 import re
 
 from mongoengine import *

tests/fields/test_embedded_document_field.py

@@ -1,17 +1,15 @@
 # -*- coding: utf-8 -*-
 from mongoengine import (
     Document,
-    StringField,
-    ValidationError,
     EmbeddedDocument,
     EmbeddedDocumentField,
-    InvalidQueryError,
-    LookUpError,
-    IntField,
     GenericEmbeddedDocumentField,
+    IntField,
+    InvalidQueryError,
     ListField,
-    EmbeddedDocumentListField,
-    ReferenceField,
+    LookUpError,
+    StringField,
+    ValidationError,
 )
 
 from tests.utils import MongoDBTestCase

tests/fields/test_fields.py

@@ -79,7 +79,7 @@ class TestField(MongoDBTestCase):
         self.assertEqual(data_to_be_saved, ["age", "created", "day", "name", "userid"])
 
     def test_custom_field_validation_raise_deprecated_error_when_validation_return_something(
-        self
+        self,
     ):
         # Covers introduction of a breaking change in the validation parameter (0.18)
         def _not_empty(z):
@@ -202,7 +202,7 @@ class TestField(MongoDBTestCase):
         self.assertEqual(data_to_be_saved, ["age", "created", "userid"])
 
     def test_default_value_is_not_used_when_changing_value_to_empty_list_for_strict_doc(
-        self
+        self,
     ):
         """List field with default can be set to the empty list (strict)"""
         # Issue #1733
@@ -216,7 +216,7 @@ class TestField(MongoDBTestCase):
         self.assertEqual(reloaded.x, [])
 
     def test_default_value_is_not_used_when_changing_value_to_empty_list_for_dyn_doc(
-        self
+        self,
     ):
         """List field with default can be set to the empty list (dynamic)"""
         # Issue #1733
@@ -1245,7 +1245,7 @@ class TestField(MongoDBTestCase):
         self.assertEqual(a.b.c.txt, "hi")
 
     def test_embedded_document_field_cant_reference_using_a_str_if_it_does_not_exist_yet(
-        self
+        self,
     ):
         raise SkipTest(
             "Using a string reference in an EmbeddedDocumentField does not work if the class isnt registerd yet"

tests/fields/test_reference_field.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from bson import SON, DBRef
+from bson import DBRef, SON
 
 from mongoengine import *
 

tests/test_common.py

@@ -1,7 +1,7 @@
 import unittest
 
-from mongoengine.common import _import_class
 from mongoengine import Document
+from mongoengine.common import _import_class
 
 
 class TestCommon(unittest.TestCase):

tests/test_connection.py

@@ -168,7 +168,7 @@ class ConnectionTest(unittest.TestCase):
         )
 
     def test_connect_fails_if_similar_connection_settings_arent_defined_the_same_way(
-        self
+        self,
     ):
         """Intended to keep the detecton function simple but robust"""
         db_name = "mongoenginetest"

tests/test_context_managers.py

@@ -3,11 +3,11 @@ import unittest
 from mongoengine import *
 from mongoengine.connection import get_db
 from mongoengine.context_managers import (
-    switch_db,
-    switch_collection,
-    no_sub_classes,
     no_dereference,
+    no_sub_classes,
     query_counter,
+    switch_collection,
+    switch_db,
 )
 from mongoengine.pymongo_support import count_documents
 

tests/test_datastructures.py

@@ -2,7 +2,7 @@ import unittest
 from six import iterkeys
 
 from mongoengine import Document
-from mongoengine.base.datastructures import StrictDict, BaseList, BaseDict
+from mongoengine.base.datastructures import BaseDict, BaseList, StrictDict
 
 
 class DocumentStub(object):
@@ -20,8 +20,8 @@ class TestBaseDict(unittest.TestCase):
         fake_doc = DocumentStub()
         base_list = BaseDict(dict_items, instance=None, name="my_name")
         base_list._instance = (
-            fake_doc
-        )  # hack to inject the mock, it does not work in the constructor
+            fake_doc  # hack to inject the mock, it does not work in the constructor
+        )
         return base_list
 
     def test___init___(self):
@@ -156,8 +156,8 @@ class TestBaseList(unittest.TestCase):
         fake_doc = DocumentStub()
         base_list = BaseList(list_items, instance=None, name="my_name")
         base_list._instance = (
-            fake_doc
-        )  # hack to inject the mock, it does not work in the constructor
+            fake_doc  # hack to inject the mock, it does not work in the constructor
+        )
         return base_list
 
     def test___init___(self):

tests/test_replicaset_connection.py

@@ -1,7 +1,7 @@
 import unittest
 
-from pymongo import ReadPreference
 from pymongo import MongoClient
+from pymongo import ReadPreference
 
 import mongoengine
 from mongoengine.connection import ConnectionFailure

tests/test_utils.py

@@ -1,5 +1,5 @@
-import unittest
 import re
+import unittest
 
 from mongoengine.base.utils import LazyRegexCompiler
 

tests/utils.py

@@ -4,7 +4,7 @@ import unittest
 from nose.plugins.skip import SkipTest
 
 from mongoengine import connect
-from mongoengine.connection import get_db, disconnect_all
+from mongoengine.connection import disconnect_all, get_db
 from mongoengine.mongodb_support import get_mongodb_version