File use_stdlib_mock.patch of Package python-circuitbreaker

---
 tests/test_functional.py |    5 ++++-
 tests/test_unit.py       |   15 +++++++--------
 2 files changed, 11 insertions(+), 9 deletions(-)

--- a/tests/test_functional.py
+++ b/tests/test_functional.py
@@ -1,6 +1,9 @@
 from time import sleep
 
-from mock.mock import patch, Mock
+try:
+    from unittest.mock import patch, Mock
+except (ImportError, ModuleNotFoundError):
+    from mock import patch, Mock
 from pytest import raises
 
 from circuitbreaker import CircuitBreaker, CircuitBreakerError, \
--- a/tests/test_unit.py
+++ b/tests/test_unit.py
@@ -1,9 +1,8 @@
 try:
-    from unittest.mock import Mock
-except ImportError:
-    from mock import Mock
+    from unittest.mock import Mock, patch
+except (ImportError, ModuleNotFoundError):
+    from mock import Mock, patch
 
-from mock.mock import patch
 from pytest import raises
 
 from circuitbreaker import CircuitBreaker, CircuitBreakerError, circuit
@@ -50,7 +49,7 @@ def test_circuitbreaker_should_call_fall
     func = Mock(return_value=False)
 
     CircuitBreaker.opened = lambda self: True
-    
+
     cb = CircuitBreaker(name='WithFallback', fallback_function=fallback)
     cb.call(func)
     fallback.assert_called_once_with()
@@ -61,11 +60,11 @@ def test_circuitbreaker_should_not_call_
     func = Mock(return_value=False)
 
     CircuitBreaker.opened = lambda self: True
-    
+
     cb = CircuitBreaker(name='WithFallback', fallback_function=fallback)
     assert cb.call(func) == fallback.return_value
     assert not func.called
-    
+
 
 def mocked_function(*args, **kwargs):
     pass
@@ -82,7 +81,7 @@ def test_circuitbreaker_call_fallback_fu
     func_decorated('test2',test='test')
 
     # check args and kwargs are getting correctly to fallback function
-    
+
     fallback.assert_called_once_with('test2', test='test')
 
 @patch('circuitbreaker.CircuitBreaker.decorate')