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Fix clashes between debugger tests and coverage.py...
Fix clashes between debugger tests and coverage.py coverage.py works by setting the trace function. But so does the debugger, so we need to re-set it afterwards to get accurate coverage results.

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tempdir.py
148 lines | 4.7 KiB | text/x-python | PythonLexer
"""TemporaryDirectory class, copied from Python 3.2.
This is copied from the stdlib and will be standard in Python 3.2 and onwards.
"""
from __future__ import print_function
import os as _os
# This code should only be used in Python versions < 3.2, since after that we
# can rely on the stdlib itself.
try:
from tempfile import TemporaryDirectory
except ImportError:
from tempfile import mkdtemp, template
class TemporaryDirectory(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 everthing contained
in it are removed.
"""
def __init__(self, suffix="", prefix=template, dir=None):
self.name = mkdtemp(suffix, prefix, dir)
self._closed = False
def __enter__(self):
return self.name
def cleanup(self, _warn=False):
if self.name and not self._closed:
try:
self._rmtree(self.name)
except (TypeError, AttributeError) as ex:
# Issue #10188: Emit a warning on stderr
# if the directory could not be cleaned
# up due to missing globals
if "None" not in str(ex):
raise
print("ERROR: {!r} while cleaning up {!r}".format(ex, self,),
file=_sys.stderr)
return
self._closed = True
if _warn:
self._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)
# XXX (ncoghlan): The following code attempts to make
# this class tolerant of the module nulling out process
# that happens during CPython interpreter shutdown
# Alas, it doesn't actually manage it. See issue #10188
_listdir = staticmethod(_os.listdir)
_path_join = staticmethod(_os.path.join)
_isdir = staticmethod(_os.path.isdir)
_remove = staticmethod(_os.remove)
_rmdir = staticmethod(_os.rmdir)
_os_error = _os.error
def _rmtree(self, path):
# Essentially a stripped down version of shutil.rmtree. We can't
# use globals because they may be None'ed out at shutdown.
for name in self._listdir(path):
fullname = self._path_join(path, name)
try:
isdir = self._isdir(fullname)
except self._os_error:
isdir = False
if isdir:
self._rmtree(fullname)
else:
try:
self._remove(fullname)
except self._os_error:
pass
try:
self._rmdir(path)
except self._os_error:
pass
class NamedFileInTemporaryDirectory(object):
def __init__(self, filename, mode='w+b', bufsize=-1, **kwds):
"""
Open a file named `filename` in a temporary directory.
This context manager is preferred over `NamedTemporaryFile` in
stdlib `tempfile` when one needs to reopen the file.
Arguments `mode` and `bufsize` are passed to `open`.
Rest of the arguments are passed to `TemporaryDirectory`.
"""
self._tmpdir = TemporaryDirectory(**kwds)
path = _os.path.join(self._tmpdir.name, filename)
self.file = open(path, mode, bufsize)
def cleanup(self):
self.file.close()
self._tmpdir.cleanup()
__del__ = cleanup
def __enter__(self):
return self.file
def __exit__(self, type, value, traceback):
self.cleanup()
class TemporaryWorkingDirectory(TemporaryDirectory):
"""
Creates a temporary directory and sets the cwd to that directory.
Automatically reverts to previous cwd upon cleanup.
Usage example:
with TemporaryWorakingDirectory() as tmpdir:
...
"""
def __init__(self, **kw):
super(TemporaryWorkingDirectory, self).__init__(**kw)
#Change cwd to new temp dir. Remember old cwd.
self.old_wd = _os.getcwd()
_os.chdir(self.name)
def cleanup(self, _warn=False):
#Revert to old cwd.
_os.chdir(self.old_wd)
#Cleanup
super(TemporaryWorkingDirectory, self).cleanup(_warn=_warn)