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Diffstat (limited to 'tests/compat.py')
-rw-r--r-- | tests/compat.py | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/tests/compat.py b/tests/compat.py new file mode 100644 index 0000000..383963a --- /dev/null +++ b/tests/compat.py @@ -0,0 +1,78 @@ +# -*- coding: utf-8 -*- +"""Python compatibility support for CLI Helpers' tests.""" + +from __future__ import unicode_literals +import os as _os +import shutil as _shutil +import tempfile as _tempfile +import warnings as _warnings + +from cli_helpers.compat import PY2 + + +class _TempDirectory(object): + """Create and return a temporary directory. This has the same + behavior as mkdtemp but can be used as a context manager. For + example: + + with TemporaryDirectory() as tmpdir: + ... + + Upon exiting the context, the directory and everything contained + in it are removed. + + NOTE: Copied from the Python 3 standard library. + """ + + # Handle mkdtemp raising an exception + name = None + _closed = False + + def __init__(self, suffix="", prefix='tmp', dir=None): + self.name = _tempfile.mkdtemp(suffix, prefix, dir) + + def __repr__(self): + return "<{} {!r}>".format(self.__class__.__name__, self.name) + + def __enter__(self): + return self.name + + def cleanup(self, _warn=False, _warnings=_warnings): + if self.name and not self._closed: + try: + _shutil.rmtree(self.name) + except (TypeError, AttributeError) as ex: + if "None" not in '%s' % (ex,): + raise + self._rmtree(self.name) + self._closed = True + if _warn and _warnings.warn: + _warnings.warn("Implicitly cleaning up {!r}".format(self), + ResourceWarning) + + def __exit__(self, exc, value, tb): + self.cleanup() + + def __del__(self): + # Issue a ResourceWarning if implicit cleanup needed + self.cleanup(_warn=True) + + def _rmtree(self, path, _OSError=OSError, _sep=_os.path.sep, + _listdir=_os.listdir, _remove=_os.remove, _rmdir=_os.rmdir): + # Essentially a stripped down version of shutil.rmtree. We can't + # use globals because they may be None'ed out at shutdown. + if not isinstance(path, str): + _sep = _sep.encode() + try: + for name in _listdir(path): + fullname = path + _sep + name + try: + _remove(fullname) + except _OSError: + self._rmtree(fullname) + _rmdir(path) + except _OSError: + pass + + +TemporaryDirectory = _TempDirectory if PY2 else _tempfile.TemporaryDirectory |