57 lines
1.7 KiB
Python
57 lines
1.7 KiB
Python
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# (c) 2016, Matt Davis <mdavis@ansible.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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# Make coding more python3-ish
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import sys
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from contextlib import contextmanager
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from io import BytesIO, StringIO
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from ansible.compat.six import PY3
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from ansible.utils.unicode import to_bytes
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@contextmanager
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def swap_stdin_and_argv(stdin_data='', argv_data=tuple()):
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"""
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context manager that temporarily masks the test runner's values for stdin and argv
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"""
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real_stdin = sys.stdin
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if PY3:
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sys.stdin = StringIO(stdin_data)
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sys.stdin.buffer = BytesIO(to_bytes(stdin_data))
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else:
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sys.stdin = BytesIO(to_bytes(stdin_data))
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real_argv = sys.argv
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sys.argv = argv_data
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yield
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sys.stdin = real_stdin
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sys.argv = real_argv
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@contextmanager
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def swap_stdout():
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"""
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context manager that temporarily replaces stdout for tests that need to verify output
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"""
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old_stdout = sys.stdout
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fake_stream = BytesIO()
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sys.stdout = fake_stream
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yield fake_stream
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sys.stdout = old_stdout
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