Adding support for patch.dict

Author: nicoddemus

README.rst

@@ -46,6 +46,7 @@ The supported methods are:
 * ``mock.patch``: see http://www.voidspace.org.uk/python/mock/patch.html#patch.
 * ``mock.patch.object``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-object.
 * ``mock.patch.multiple``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-multiple.
+* ``mock.patch.dict``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-dict.
 * ``mock.stopall()``: stops all active patches at this point. 
 
 Why bother with a plugin?

pytest_mock.py

@@ -57,6 +57,10 @@ def multiple(self, *args, **kwargs):
             return self._start_patch(mock_module.patch.multiple, *args,
                                      **kwargs)
 
+        def dict(self, *args, **kwargs):
+            """API to mock.patch.dict"""
+            return self._start_patch(mock_module.patch.dict, *args, **kwargs)
+
 
         def __call__(self, *args, **kwargs):
             """API to mock.patch"""

test_pytest_mock.py

@@ -68,11 +68,23 @@ def mock_using_patch_multiple(mock):
 @pytest.mark.parametrize('mock_fs', [mock_using_patch_object, mock_using_patch,
                                      mock_using_patch_multiple],
 )
-def test_mock_fixture(mock_fs, mock, check_unix_fs_mocked):
+def test_mock_patches(mock_fs, mock, check_unix_fs_mocked):
     """
     Installs mocks into `os` functions and performs a standard testing of
     mock functionality. We parametrize different mock methods to ensure
     all (intended, at least) mock API is covered.
     """
     mocked_rm, mocked_ls = mock_fs(mock)
     check_unix_fs_mocked(mocked_rm, mocked_ls)
+
+
+def test_mock_patch_dict(mock):
+    """
+    Testing
+    :param mock:
+    """
+    x = {'original': 1}
+    mock.patch.dict(x, values=[('new', 10)], clear=True)
+    assert x == {'new': 10}
+    mock.stopall()
+    assert x == {'original': 1}