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-rw-r--r--NEWS.d/2018-09-14-10-38-18.bpo-31177.Sv91TN.rst2
-rw-r--r--mock/mock.py2
-rw-r--r--mock/tests/testmock.py10
3 files changed, 13 insertions, 1 deletions
diff --git a/NEWS.d/2018-09-14-10-38-18.bpo-31177.Sv91TN.rst b/NEWS.d/2018-09-14-10-38-18.bpo-31177.Sv91TN.rst
new file mode 100644
index 0000000..f385571
--- /dev/null
+++ b/NEWS.d/2018-09-14-10-38-18.bpo-31177.Sv91TN.rst
@@ -0,0 +1,2 @@
+Fix bug that prevented using :meth:`reset_mock <unittest.mock.Mock.reset_mock>`
+on mock instances with deleted attributes
diff --git a/mock/mock.py b/mock/mock.py
index cb0a577..a9b52ab 100644
--- a/mock/mock.py
+++ b/mock/mock.py
@@ -673,7 +673,7 @@ class NonCallableMock(Base):
self._mock_side_effect = None
for child in self._mock_children.values():
- if isinstance(child, _SpecState):
+ if isinstance(child, _SpecState) or child is _deleted:
continue
child.reset_mock(visited)
diff --git a/mock/tests/testmock.py b/mock/tests/testmock.py
index a61dff1..cda4124 100644
--- a/mock/tests/testmock.py
+++ b/mock/tests/testmock.py
@@ -1662,6 +1662,16 @@ class MockTest(unittest.TestCase):
self.assertRaises(AttributeError, getattr, mock, 'f')
+ def test_reset_mock_does_not_raise_on_attr_deletion(self):
+ # bpo-31177: reset_mock should not raise AttributeError when attributes
+ # were deleted in a mock instance
+ mock = Mock()
+ mock.child = True
+ del mock.child
+ mock.reset_mock()
+ self.assertFalse(hasattr(mock, 'child'))
+
+
def test_class_assignable(self):
for mock in Mock(), MagicMock():
self.assertNotIsInstance(mock, int)