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Viewing changes to tests/__init__.py

Avoid invoking git directly.

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tests/__init__.py
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TestCaseWithTransport = tests.TestCaseWithTransport
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TestCaseWithMemoryTransport = tests.TestCaseWithMemoryTransport
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class _GitCommandFeature(tests.Feature):
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    def _probe(self):
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        try:
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            p = subprocess.Popen(['git', '--version'], stdout=subprocess.PIPE)
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        except IOError:
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            return False
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        out, err = p.communicate()
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        trace.mutter('Using: %s', out.rstrip('\n'))
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        return True
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    def feature_name(self):
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        return 'git'
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class _DulwichFeature(tests.Feature):
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    def _probe(self):
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        return 'dulwich'
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GitCommandFeature = _GitCommandFeature()
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DulwichFeature = _DulwichFeature()
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def run_git(*args):
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    cmd = ['git'] + list(args)
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    p = subprocess.Popen(cmd,
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                         stdout=subprocess.PIPE,
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                         stderr=subprocess.PIPE)
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    out, err = p.communicate()
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    if p.returncode != 0:
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        raise AssertionError('Bad return code: %d for %s:\n%s'
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                             % (p.returncode, ' '.join(cmd), err))
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    return out
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class GitBranchBuilder(object):
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    def __init__(self, stream=None):