modify resetall to work with patch object

CHANGELOG.rst

@@ -1,3 +1,12 @@
+3.6.1 (UNRELEASED)
+------------------
+
+* Fix ``mocker.resetall()`` when using ``mocker.spy()`` (`#237`_). Thanks `@blaxter`_ for the report and `@shadycuz`_ for the PR.
+
+.. _@blaxter: https://github.com/blaxter
+.. _@shadycuz: https://github.com/shadycuz
+.. _#237: https://github.com/pytest-dev/pytest-mock/issues/237
+
 3.6.0 (2021-04-24)
 ------------------
 

src/pytest_mock/plugin.py

@@ -16,6 +16,7 @@
 from typing import Optional
 from typing import overload
 from typing import Tuple
+from typing import Type
 from typing import TypeVar
 from typing import Union
 
@@ -69,8 +70,18 @@ def resetall(
         :param bool return_value: Reset the return_value of mocks.
         :param bool side_effect: Reset the side_effect of mocks.
         """
+        supports_reset_mock_with_args: Tuple[Type[Any], ...]
+        if hasattr(self, "AsyncMock"):
+            supports_reset_mock_with_args = (self.Mock, self.AsyncMock)
+        else:
+            supports_reset_mock_with_args = (self.Mock,)
+
         for m in self._mocks:
-            m.reset_mock(return_value=return_value, side_effect=side_effect)
+            # See issue #237.
+            if isinstance(m, supports_reset_mock_with_args):
+                m.reset_mock(return_value=return_value, side_effect=side_effect)
+            else:
+                m.reset_mock()
 
     def stopall(self) -> None:
         """

tests/test_pytest_mock.py

@@ -310,6 +310,9 @@ def bar(self, x):
     assert spy.spy_return == 30
     assert spy.spy_exception is None
 
+    # Testing spy can still be reset (#237).
+    mocker.resetall()
+
     with pytest.raises(ValueError):
         Foo().bar(0)
     assert spy.spy_return is None