Expose mock.ANY in mocker fixture

It's handy for when you want to check _some_ parameters in a call list but not necessarily all of them.

Author: tigarmo

pytest_mock.py

@@ -18,6 +18,7 @@ class MockFixture(object):
 
     Mock = mock_module.Mock
     MagicMock = mock_module.MagicMock
+    ANY = mock_module.ANY
 
     def __init__(self):
         self._patches = []  # list of mock._patch objects