remove inheritance from unittest.TestCase on basic test classes

tests/queryset/test_field_list.py

@@ -6,7 +6,7 @@ from mongoengine import *
 from mongoengine.queryset import QueryFieldList
 
 
-class TestQueryFieldList(unittest.TestCase):
+class TestQueryFieldList:
     def test_empty(self):
         q = QueryFieldList()
         assert not q

tests/test_common.py

@@ -6,7 +6,7 @@ from mongoengine import Document
 from mongoengine.common import _import_class
 
 
-class TestCommon(unittest.TestCase):
+class TestCommon:
     def test__import_class(self):
         doc_cls = _import_class("Document")
         assert doc_cls is Document

tests/test_context_managers.py

@@ -14,7 +14,7 @@ from mongoengine.context_managers import (
 from mongoengine.pymongo_support import count_documents
 
 
-class ContextManagersTest(unittest.TestCase):
+class TestContextManagers:
     def test_switch_db_context_manager(self):
         connect("mongoenginetest")
         register_connection("testdb-1", "mongoenginetest2")

tests/test_datastructures.py

@@ -15,7 +15,7 @@ class DocumentStub(object):
         self._changed_fields.append(key)
 
 
-class TestBaseDict(unittest.TestCase):
+class TestBaseDict:
     @staticmethod
     def _get_basedict(dict_items):
         """Get a BaseList bound to a fake document instance"""
@@ -151,7 +151,7 @@ class TestBaseDict(unittest.TestCase):
         assert base_dict._instance._changed_fields == ["my_name.a_new_attr"]
 
 
-class TestBaseList(unittest.TestCase):
+class TestBaseList:
     @staticmethod
     def _get_baselist(list_items):
         """Get a BaseList bound to a fake document instance"""
@@ -360,12 +360,12 @@ class TestBaseList(unittest.TestCase):
 
 
 class TestStrictDict(unittest.TestCase):
-    def strict_dict_class(self, *args, **kwargs):
-        return StrictDict.create(*args, **kwargs)
-
     def setUp(self):
         self.dtype = self.strict_dict_class(("a", "b", "c"))
 
+    def strict_dict_class(self, *args, **kwargs):
+        return StrictDict.create(*args, **kwargs)
+
     def test_init(self):
         d = self.dtype(a=1, b=1, c=1)
         assert (d.a, d.b, d.c) == (1, 1, 1)

tests/test_signals.py

@@ -7,7 +7,7 @@ from mongoengine import signals
 signal_output = []
 
 
-class SignalTests(unittest.TestCase):
+class TestSignal(unittest.TestCase):
     """
     Testing signals before/after saving and deleting.
     """

tests/test_utils.py

@@ -8,7 +8,7 @@ from mongoengine.base.utils import LazyRegexCompiler
 signal_output = []
 
 
-class LazyRegexCompilerTest(unittest.TestCase):
+class TestLazyRegexCompiler:
     def test_lazy_regex_compiler_verify_laziness_of_descriptor(self):
         class UserEmail(object):
             EMAIL_REGEX = LazyRegexCompiler("@", flags=32)