fix black formatting

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 *