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How to use _start_patch method in pytest-mock

Best Python code snippet using pytest-mock

plugin.py

Source:plugin.py

...115        def __init__(self, patches, mocks, mock_module):116            self._patches = patches117            self._mocks = mocks118            self.mock_module = mock_module119        def _start_patch(self, mock_func, *args, **kwargs):120            """Patches something by calling the given function from the mock121            module, registering the patch to stop it later and returns the122            mock object resulting from the mock call.123            """124            p = mock_func(*args, **kwargs)125            mocked = p.start()126            self._patches.append(p)127            if hasattr(mocked, "reset_mock"):128                self._mocks.append(mocked)129            return mocked130        def object(self, *args, **kwargs):131            """API to mock.patch.object"""132            return self._start_patch(self.mock_module.patch.object, *args, **kwargs)133        def multiple(self, *args, **kwargs):134            """API to mock.patch.multiple"""135            return self._start_patch(self.mock_module.patch.multiple, *args, **kwargs)136        def dict(self, *args, **kwargs):137            """API to mock.patch.dict"""138            return self._start_patch(self.mock_module.patch.dict, *args, **kwargs)139        def __call__(self, *args, **kwargs):140            """API to mock.patch"""141            return self._start_patch(self.mock_module.patch, *args, **kwargs)142@pytest.yield_fixture143def mocker(pytestconfig):144    """145    return an object that has the same interface to the `mock` module, but146    takes care of automatically undoing all patches after each test method.147    """148    result = MockFixture(pytestconfig)149    yield result150    result.stopall()151@pytest.fixture152def mock(mocker):153    """154    Same as "mocker", but kept only for backward compatibility.155    """...

pytest_mock.py

Source:pytest_mock.py

...101        def __init__(self, patches, mocks, mock_module):102            self._patches = patches103            self._mocks = mocks104            self.mock_module = mock_module105        def _start_patch(self, mock_func, *args, **kwargs):106            """Patches something by calling the given function from the mock107            module, registering the patch to stop it later and returns the108            mock object resulting from the mock call.109            """110            p = mock_func(*args, **kwargs)111            mocked = p.start()112            self._patches.append(p)113            if hasattr(mocked, 'reset_mock'):114                self._mocks.append(mocked)115            return mocked116        def object(self, *args, **kwargs):117            """API to mock.patch.object"""118            return self._start_patch(self.mock_module.patch.object, *args, **kwargs)119        def multiple(self, *args, **kwargs):120            """API to mock.patch.multiple"""121            return self._start_patch(self.mock_module.patch.multiple, *args,122                                     **kwargs)123        def dict(self, *args, **kwargs):124            """API to mock.patch.dict"""125            return self._start_patch(self.mock_module.patch.dict, *args, **kwargs)126        def __call__(self, *args, **kwargs):127            """API to mock.patch"""128            return self._start_patch(self.mock_module.patch, *args, **kwargs)129@pytest.yield_fixture130def mocker(pytestconfig):131    """132    return an object that has the same interface to the `mock` module, but133    takes care of automatically undoing all patches after each test method.134    """135    result = MockFixture(pytestconfig)136    yield result137    result.stopall()138@pytest.fixture139def mock(mocker):140    """141    Same as "mocker", but kept only for backward compatibility.142    """...

conftest.py

Source:conftest.py

...9@fixture10def mocker(mocker):11    def autospec_as_default(*args, **kwargs):12        kwargs.setdefault('autospec', True)13        return mocker.patch.__class__._start_patch(mocker, *args, **kwargs)14    mocker.patch.object(mocker.patch, '_start_patch', side_effect=autospec_as_default)15    return mocker16'''17def load_variable(name, cache):18    var = environ.get(name, None)19    if var is not None:20        if cache.get(name, None) != var:21            cache.set(name, var)22        return var23    var = cache.get(name, None)24    if var is None:25        raise ValueError("Variable {!r} neither in environment nor cache".format(name))26    return var27@fixture(scope="session")...

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