def test_get_stacks(monkeypatch): mock_get = MagicMock() mock_get.return_value = FakeResponse(200, '["stack1","stack2"]') monkeypatch.setattr('requests.get', mock_get) lizzy = Lizzy('https://lizzy.example', '7E5770K3N') stacks = lizzy.get_stacks() header = make_header('7E5770K3N') mock_get.assert_called_once_with('https://lizzy.example/stacks', None, headers=header, verify=False) assert stacks == ["stack1", "stack2"]