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# Copyright 2019 Canonical, Ltd. # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, version 3. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. import contextlib import imp import importlib import mock import random import string def builtin_module_name(): options = ('builtins', '__builtin__') for name in options: try: imp.find_module(name) except ImportError: continue else: print('importing and returning: %s' % name) importlib.import_module(name) return name @contextlib.contextmanager def simple_mocked_open(content=None): if not content: content = '' m_open = mock.mock_open(read_data=content) mod_name = builtin_module_name() m_patch = '{}.open'.format(mod_name) with mock.patch(m_patch, m_open, create=True): yield m_open def random_string(length=8): """ return a random lowercase string with default length of 8""" return ''.join( random.choice(string.ascii_lowercase) for _ in range(length))