| # |
| # Copyright 2015 Google Inc. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """Various utilities used in tests.""" |
| |
| import contextlib |
| import os |
| import shutil |
| import sys |
| import tempfile |
| import unittest |
| |
| import six |
| |
| |
| SkipOnWindows = unittest.skipIf( |
| os.name == 'nt', 'Does not run on windows') |
| |
| |
| @contextlib.contextmanager |
| def TempDir(change_to=False): |
| if change_to: |
| original_dir = os.getcwd() |
| path = tempfile.mkdtemp() |
| try: |
| if change_to: |
| os.chdir(path) |
| yield path |
| finally: |
| if change_to: |
| os.chdir(original_dir) |
| shutil.rmtree(path) |
| |
| |
| @contextlib.contextmanager |
| def CaptureOutput(): |
| new_stdout, new_stderr = six.StringIO(), six.StringIO() |
| old_stdout, old_stderr = sys.stdout, sys.stderr |
| try: |
| sys.stdout, sys.stderr = new_stdout, new_stderr |
| yield new_stdout, new_stderr |
| finally: |
| sys.stdout, sys.stderr = old_stdout, old_stderr |