Fixes MongoDB tests

celery/tests/backends/test_mongodb.py

@@ -381,39 +381,7 @@ class test_MongoBackend(AppCase):
             x._get_database()
         db.authenticate.assert_called_with('jerry', 'cere4l')
 
-    @patch('celery.backends.mongodb.detect_environment')
-    def test_prepare_client_options_for_ver_2(self, m_detect_env):
-        m_detect_env.return_value = 'default'
-        with patch('pymongo.version_tuple', new=(2, 6, 3)):
-            options = self.backend._prepare_client_options()
-            self.assertDictEqual(options, {
-                'max_pool_size': self.backend.max_pool_size,
-                'auto_start_request': False
-            })
-
-    @patch('celery.backends.mongodb.detect_environment')
-    def test_prepare_client_options_for_ver_2_with_gevent(self, m_detect_env):
-        m_detect_env.return_value = 'gevent'
-        with patch('pymongo.version_tuple', new=(2, 6, 3)):
-            options = self.backend._prepare_client_options()
-            self.assertDictEqual(options, {
-                'max_pool_size': self.backend.max_pool_size,
-                'auto_start_request': False,
-                'use_greenlets': True
-            })
-
-    @patch('celery.backends.mongodb.detect_environment')
-    def test_prepare_client_options_for_ver_3(self, m_detect_env):
-        m_detect_env.return_value = 'default'
-        with patch('pymongo.version_tuple', new=(3, 0, 3)):
-            options = self.backend._prepare_client_options()
-            self.assertDictEqual(options, {
-                'maxPoolSize': self.backend.max_pool_size
-            })
-
-    @patch('celery.backends.mongodb.detect_environment')
-    def test_prepare_client_options_for_ver_3_with_gevent(self, m_detect_env):
-        m_detect_env.return_value = 'gevent'
+    def test_prepare_client_options(self):
         with patch('pymongo.version_tuple', new=(3, 0, 3)):
             options = self.backend._prepare_client_options()
             self.assertDictEqual(options, {