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224 lines
8.7 KiB
Python
224 lines
8.7 KiB
Python
# Copyright 2010-2011 OpenStack Foundation
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# Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# Copyright (C) 2013 Association of Universities for Research in Astronomy
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# (AURA)
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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#
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# 3. The name of AURA and its representatives may not be used to
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# endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY AURA ``AS IS'' AND ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL AURA BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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"""Common utilities used in testing"""
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import os
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import shutil
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import subprocess
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import sys
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import fixtures
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import testresources
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import testtools
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from testtools import content
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from pbr import options
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class DiveDir(fixtures.Fixture):
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"""Dive into given directory and return back on cleanup.
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:ivar path: The target directory.
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"""
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def __init__(self, path):
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self.path = path
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def setUp(self):
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super(DiveDir, self).setUp()
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self.addCleanup(os.chdir, os.getcwd())
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os.chdir(self.path)
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class BaseTestCase(testtools.TestCase, testresources.ResourcedTestCase):
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def setUp(self):
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super(BaseTestCase, self).setUp()
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test_timeout = os.environ.get('OS_TEST_TIMEOUT', 30)
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try:
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test_timeout = int(test_timeout)
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except ValueError:
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# If timeout value is invalid, fail hard.
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print("OS_TEST_TIMEOUT set to invalid value"
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" defaulting to no timeout")
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test_timeout = 0
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if test_timeout > 0:
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self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
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if os.environ.get('OS_STDOUT_CAPTURE') in options.TRUE_VALUES:
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stdout = self.useFixture(fixtures.StringStream('stdout')).stream
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self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
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if os.environ.get('OS_STDERR_CAPTURE') in options.TRUE_VALUES:
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stderr = self.useFixture(fixtures.StringStream('stderr')).stream
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self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
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self.log_fixture = self.useFixture(
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fixtures.FakeLogger('pbr'))
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# Older git does not have config --local, so create a temporary home
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# directory to permit using git config --global without stepping on
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# developer configuration.
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self.useFixture(fixtures.TempHomeDir())
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self.useFixture(fixtures.NestedTempfile())
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self.useFixture(fixtures.FakeLogger())
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# TODO(lifeless) we should remove PBR_VERSION from the environment.
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# rather than setting it, because thats not representative - we need to
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# test non-preversioned codepaths too!
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self.useFixture(fixtures.EnvironmentVariable('PBR_VERSION', '0.0'))
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self.temp_dir = self.useFixture(fixtures.TempDir()).path
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self.package_dir = os.path.join(self.temp_dir, 'testpackage')
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shutil.copytree(os.path.join(os.path.dirname(__file__), 'testpackage'),
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self.package_dir)
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self.addCleanup(os.chdir, os.getcwd())
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os.chdir(self.package_dir)
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self.addCleanup(self._discard_testpackage)
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# Tests can opt into non-PBR_VERSION by setting preversioned=False as
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# an attribute.
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if not getattr(self, 'preversioned', True):
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self.useFixture(fixtures.EnvironmentVariable('PBR_VERSION'))
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setup_cfg_path = os.path.join(self.package_dir, 'setup.cfg')
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with open(setup_cfg_path, 'rt') as cfg:
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content = cfg.read()
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content = content.replace(u'version = 0.1.dev', u'')
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with open(setup_cfg_path, 'wt') as cfg:
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cfg.write(content)
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def _discard_testpackage(self):
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# Remove pbr.testpackage from sys.modules so that it can be freshly
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# re-imported by the next test
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for k in list(sys.modules):
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if (k == 'pbr_testpackage' or
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k.startswith('pbr_testpackage.')):
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del sys.modules[k]
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def run_pbr(self, *args, **kwargs):
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return self._run_cmd('pbr', args, **kwargs)
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def run_setup(self, *args, **kwargs):
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return self._run_cmd(sys.executable, ('setup.py',) + args, **kwargs)
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def _run_cmd(self, cmd, args=[], allow_fail=True, cwd=None):
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"""Run a command in the root of the test working copy.
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Runs a command, with the given argument list, in the root of the test
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working copy--returns the stdout and stderr streams and the exit code
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from the subprocess.
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:param cwd: If falsy run within the test package dir, otherwise run
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within the named path.
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"""
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cwd = cwd or self.package_dir
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result = _run_cmd([cmd] + list(args), cwd=cwd)
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if result[2] and not allow_fail:
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raise Exception("Command failed retcode=%s" % result[2])
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return result
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class CapturedSubprocess(fixtures.Fixture):
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"""Run a process and capture its output.
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:attr stdout: The output (a string).
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:attr stderr: The standard error (a string).
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:attr returncode: The return code of the process.
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Note that stdout and stderr are decoded from the bytestrings subprocess
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returns using error=replace.
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"""
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def __init__(self, label, *args, **kwargs):
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"""Create a CapturedSubprocess.
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:param label: A label for the subprocess in the test log. E.g. 'foo'.
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:param *args: The *args to pass to Popen.
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:param **kwargs: The **kwargs to pass to Popen.
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"""
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super(CapturedSubprocess, self).__init__()
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self.label = label
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self.args = args
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self.kwargs = kwargs
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self.kwargs['stderr'] = subprocess.PIPE
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self.kwargs['stdin'] = subprocess.PIPE
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self.kwargs['stdout'] = subprocess.PIPE
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def setUp(self):
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super(CapturedSubprocess, self).setUp()
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proc = subprocess.Popen(*self.args, **self.kwargs)
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out, err = proc.communicate()
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self.out = out.decode('utf-8', 'replace')
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self.err = err.decode('utf-8', 'replace')
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self.addDetail(self.label + '-stdout', content.text_content(self.out))
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self.addDetail(self.label + '-stderr', content.text_content(self.err))
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self.returncode = proc.returncode
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if proc.returncode:
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raise AssertionError(
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'Failed process args=%r, kwargs=%r, returncode=%s' % (
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self.args, self.kwargs, proc.returncode))
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self.addCleanup(delattr, self, 'out')
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self.addCleanup(delattr, self, 'err')
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self.addCleanup(delattr, self, 'returncode')
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def _run_cmd(args, cwd):
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"""Run the command args in cwd.
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:param args: The command to run e.g. ['git', 'status']
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:param cwd: The directory to run the comamnd in.
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:return: ((stdout, stderr), returncode)
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"""
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p = subprocess.Popen(
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args, stdin=subprocess.PIPE, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE, cwd=cwd)
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streams = tuple(s.decode('latin1').strip() for s in p.communicate())
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for stream_content in streams:
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print(stream_content)
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return (streams) + (p.returncode,)
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def _config_git():
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_run_cmd(
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['git', 'config', '--global', 'user.email', 'example@example.com'],
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None)
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_run_cmd(
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['git', 'config', '--global', 'user.name', 'OpenStack Developer'],
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None)
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_run_cmd(
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['git', 'config', '--global', 'user.signingkey',
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'example@example.com'], None)
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