def test_pip_purge_method_with_pip(self):
mock_modules = sys.modules.copy()
mock_modules.pop("pip", None)
mock_modules["pip"] = object()
with patch("sys.modules", mock_modules):
pip_state.purge_pip()
assert "pip" not in mock_modules
def test_pip_purge_method_with_pip(self):
mock_modules = sys.modules.copy()
mock_modules.pop('pip', None)
mock_modules['pip'] = object()
with patch('sys.modules', mock_modules):
pip_state.purge_pip()
assert 'pip' not in mock_modules
def test_pip_purge_method_without_pip(self):
mock_modules = sys.modules.copy()
mock_modules.pop("pip", None)
with patch("sys.modules", mock_modules):
pip_state.purge_pip()
