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1052 lines
34 KiB
Python
1052 lines
34 KiB
Python
# tempfile.py unit tests.
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import tempfile
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import os
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import signal
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import sys
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import re
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import warnings
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import unittest
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from test import support
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if hasattr(os, 'stat'):
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import stat
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has_stat = 1
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else:
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has_stat = 0
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has_textmode = (tempfile._text_openflags != tempfile._bin_openflags)
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has_spawnl = hasattr(os, 'spawnl')
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# TEST_FILES may need to be tweaked for systems depending on the maximum
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# number of files that can be opened at one time (see ulimit -n)
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if sys.platform.startswith('openbsd'):
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TEST_FILES = 48
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else:
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TEST_FILES = 100
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# This is organized as one test for each chunk of code in tempfile.py,
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# in order of their appearance in the file. Testing which requires
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# threads is not done here.
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# Common functionality.
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class BaseTestCase(unittest.TestCase):
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str_check = re.compile(r"[a-zA-Z0-9_-]{6}$")
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def setUp(self):
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self._warnings_manager = support.check_warnings()
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self._warnings_manager.__enter__()
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warnings.filterwarnings("ignore", category=RuntimeWarning,
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message="mktemp", module=__name__)
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def tearDown(self):
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self._warnings_manager.__exit__(None, None, None)
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def nameCheck(self, name, dir, pre, suf):
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(ndir, nbase) = os.path.split(name)
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npre = nbase[:len(pre)]
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nsuf = nbase[len(nbase)-len(suf):]
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# check for equality of the absolute paths!
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self.assertEqual(os.path.abspath(ndir), os.path.abspath(dir),
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"file '%s' not in directory '%s'" % (name, dir))
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self.assertEqual(npre, pre,
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"file '%s' does not begin with '%s'" % (nbase, pre))
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self.assertEqual(nsuf, suf,
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"file '%s' does not end with '%s'" % (nbase, suf))
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nbase = nbase[len(pre):len(nbase)-len(suf)]
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self.assertTrue(self.str_check.match(nbase),
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"random string '%s' does not match /^[a-zA-Z0-9_-]{6}$/"
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% nbase)
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class TestExports(BaseTestCase):
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def test_exports(self):
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# There are no surprising symbols in the tempfile module
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dict = tempfile.__dict__
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expected = {
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"NamedTemporaryFile" : 1,
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"TemporaryFile" : 1,
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"mkstemp" : 1,
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"mkdtemp" : 1,
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"mktemp" : 1,
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"TMP_MAX" : 1,
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"gettempprefix" : 1,
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"gettempdir" : 1,
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"tempdir" : 1,
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"template" : 1,
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"SpooledTemporaryFile" : 1,
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"TemporaryDirectory" : 1,
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}
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unexp = []
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for key in dict:
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if key[0] != '_' and key not in expected:
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unexp.append(key)
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self.assertTrue(len(unexp) == 0,
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"unexpected keys: %s" % unexp)
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class TestRandomNameSequence(BaseTestCase):
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"""Test the internal iterator object _RandomNameSequence."""
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def setUp(self):
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self.r = tempfile._RandomNameSequence()
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super().setUp()
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def test_get_six_char_str(self):
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# _RandomNameSequence returns a six-character string
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s = next(self.r)
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self.nameCheck(s, '', '', '')
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def test_many(self):
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# _RandomNameSequence returns no duplicate strings (stochastic)
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dict = {}
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r = self.r
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for i in range(TEST_FILES):
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s = next(r)
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self.nameCheck(s, '', '', '')
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self.assertNotIn(s, dict)
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dict[s] = 1
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def supports_iter(self):
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# _RandomNameSequence supports the iterator protocol
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i = 0
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r = self.r
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for s in r:
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i += 1
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if i == 20:
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break
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@unittest.skipUnless(hasattr(os, 'fork'),
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"os.fork is required for this test")
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def test_process_awareness(self):
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# ensure that the random source differs between
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# child and parent.
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read_fd, write_fd = os.pipe()
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pid = None
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try:
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pid = os.fork()
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if not pid:
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os.close(read_fd)
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os.write(write_fd, next(self.r).encode("ascii"))
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os.close(write_fd)
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# bypass the normal exit handlers- leave those to
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# the parent.
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os._exit(0)
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parent_value = next(self.r)
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child_value = os.read(read_fd, len(parent_value)).decode("ascii")
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finally:
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if pid:
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# best effort to ensure the process can't bleed out
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# via any bugs above
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try:
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os.kill(pid, signal.SIGKILL)
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except EnvironmentError:
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pass
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os.close(read_fd)
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os.close(write_fd)
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self.assertNotEqual(child_value, parent_value)
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class TestCandidateTempdirList(BaseTestCase):
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"""Test the internal function _candidate_tempdir_list."""
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def test_nonempty_list(self):
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# _candidate_tempdir_list returns a nonempty list of strings
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cand = tempfile._candidate_tempdir_list()
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self.assertFalse(len(cand) == 0)
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for c in cand:
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self.assertIsInstance(c, str)
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def test_wanted_dirs(self):
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# _candidate_tempdir_list contains the expected directories
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# Make sure the interesting environment variables are all set.
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with support.EnvironmentVarGuard() as env:
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for envname in 'TMPDIR', 'TEMP', 'TMP':
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dirname = os.getenv(envname)
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if not dirname:
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env[envname] = os.path.abspath(envname)
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cand = tempfile._candidate_tempdir_list()
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for envname in 'TMPDIR', 'TEMP', 'TMP':
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dirname = os.getenv(envname)
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if not dirname: raise ValueError
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self.assertIn(dirname, cand)
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try:
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dirname = os.getcwd()
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except (AttributeError, os.error):
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dirname = os.curdir
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self.assertIn(dirname, cand)
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# Not practical to try to verify the presence of OS-specific
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# paths in this list.
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# We test _get_default_tempdir by testing gettempdir.
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class TestGetCandidateNames(BaseTestCase):
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"""Test the internal function _get_candidate_names."""
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def test_retval(self):
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# _get_candidate_names returns a _RandomNameSequence object
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obj = tempfile._get_candidate_names()
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self.assertIsInstance(obj, tempfile._RandomNameSequence)
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def test_same_thing(self):
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# _get_candidate_names always returns the same object
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a = tempfile._get_candidate_names()
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b = tempfile._get_candidate_names()
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self.assertTrue(a is b)
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class TestMkstempInner(BaseTestCase):
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"""Test the internal function _mkstemp_inner."""
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class mkstemped:
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_bflags = tempfile._bin_openflags
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_tflags = tempfile._text_openflags
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_close = os.close
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_unlink = os.unlink
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def __init__(self, dir, pre, suf, bin):
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if bin: flags = self._bflags
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else: flags = self._tflags
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(self.fd, self.name) = tempfile._mkstemp_inner(dir, pre, suf, flags)
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def write(self, str):
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os.write(self.fd, str)
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def __del__(self):
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self._close(self.fd)
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self._unlink(self.name)
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def do_create(self, dir=None, pre="", suf="", bin=1):
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if dir is None:
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dir = tempfile.gettempdir()
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file = self.mkstemped(dir, pre, suf, bin)
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self.nameCheck(file.name, dir, pre, suf)
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return file
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def test_basic(self):
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# _mkstemp_inner can create files
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self.do_create().write(b"blat")
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self.do_create(pre="a").write(b"blat")
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self.do_create(suf="b").write(b"blat")
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self.do_create(pre="a", suf="b").write(b"blat")
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self.do_create(pre="aa", suf=".txt").write(b"blat")
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def test_basic_many(self):
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# _mkstemp_inner can create many files (stochastic)
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extant = list(range(TEST_FILES))
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for i in extant:
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extant[i] = self.do_create(pre="aa")
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def test_choose_directory(self):
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# _mkstemp_inner can create files in a user-selected directory
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dir = tempfile.mkdtemp()
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try:
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self.do_create(dir=dir).write(b"blat")
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finally:
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os.rmdir(dir)
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def test_file_mode(self):
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# _mkstemp_inner creates files with the proper mode
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if not has_stat:
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return # ugh, can't use SkipTest.
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file = self.do_create()
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mode = stat.S_IMODE(os.stat(file.name).st_mode)
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expected = 0o600
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if sys.platform == 'win32':
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# There's no distinction among 'user', 'group' and 'world';
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# replicate the 'user' bits.
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user = expected >> 6
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expected = user * (1 + 8 + 64)
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self.assertEqual(mode, expected)
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def test_noinherit(self):
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# _mkstemp_inner file handles are not inherited by child processes
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if not has_spawnl:
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return # ugh, can't use SkipTest.
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if support.verbose:
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v="v"
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else:
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v="q"
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file = self.do_create()
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fd = "%d" % file.fd
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try:
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me = __file__
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except NameError:
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me = sys.argv[0]
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# We have to exec something, so that FD_CLOEXEC will take
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# effect. The core of this test is therefore in
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# tf_inherit_check.py, which see.
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tester = os.path.join(os.path.dirname(os.path.abspath(me)),
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"tf_inherit_check.py")
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# On Windows a spawn* /path/ with embedded spaces shouldn't be quoted,
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# but an arg with embedded spaces should be decorated with double
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# quotes on each end
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if sys.platform == 'win32':
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decorated = '"%s"' % sys.executable
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tester = '"%s"' % tester
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else:
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decorated = sys.executable
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retval = os.spawnl(os.P_WAIT, sys.executable, decorated, tester, v, fd)
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self.assertFalse(retval < 0,
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"child process caught fatal signal %d" % -retval)
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self.assertFalse(retval > 0, "child process reports failure %d"%retval)
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def test_textmode(self):
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# _mkstemp_inner can create files in text mode
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if not has_textmode:
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return # ugh, can't use SkipTest.
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# A text file is truncated at the first Ctrl+Z byte
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f = self.do_create(bin=0)
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f.write(b"blat\x1a")
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f.write(b"extra\n")
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os.lseek(f.fd, 0, os.SEEK_SET)
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self.assertEqual(os.read(f.fd, 20), b"blat")
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class TestGetTempPrefix(BaseTestCase):
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"""Test gettempprefix()."""
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def test_sane_template(self):
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# gettempprefix returns a nonempty prefix string
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p = tempfile.gettempprefix()
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self.assertIsInstance(p, str)
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self.assertTrue(len(p) > 0)
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def test_usable_template(self):
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# gettempprefix returns a usable prefix string
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# Create a temp directory, avoiding use of the prefix.
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# Then attempt to create a file whose name is
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# prefix + 'xxxxxx.xxx' in that directory.
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p = tempfile.gettempprefix() + "xxxxxx.xxx"
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d = tempfile.mkdtemp(prefix="")
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try:
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p = os.path.join(d, p)
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fd = os.open(p, os.O_RDWR | os.O_CREAT)
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os.close(fd)
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os.unlink(p)
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finally:
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os.rmdir(d)
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class TestGetTempDir(BaseTestCase):
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"""Test gettempdir()."""
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def test_directory_exists(self):
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# gettempdir returns a directory which exists
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dir = tempfile.gettempdir()
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self.assertTrue(os.path.isabs(dir) or dir == os.curdir,
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"%s is not an absolute path" % dir)
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self.assertTrue(os.path.isdir(dir),
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"%s is not a directory" % dir)
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def test_directory_writable(self):
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# gettempdir returns a directory writable by the user
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# sneaky: just instantiate a NamedTemporaryFile, which
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# defaults to writing into the directory returned by
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# gettempdir.
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file = tempfile.NamedTemporaryFile()
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file.write(b"blat")
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file.close()
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def test_same_thing(self):
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# gettempdir always returns the same object
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a = tempfile.gettempdir()
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b = tempfile.gettempdir()
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self.assertTrue(a is b)
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class TestMkstemp(BaseTestCase):
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"""Test mkstemp()."""
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def do_create(self, dir=None, pre="", suf=""):
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if dir is None:
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dir = tempfile.gettempdir()
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(fd, name) = tempfile.mkstemp(dir=dir, prefix=pre, suffix=suf)
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(ndir, nbase) = os.path.split(name)
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adir = os.path.abspath(dir)
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self.assertEqual(adir, ndir,
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"Directory '%s' incorrectly returned as '%s'" % (adir, ndir))
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try:
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self.nameCheck(name, dir, pre, suf)
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finally:
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os.close(fd)
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os.unlink(name)
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def test_basic(self):
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# mkstemp can create files
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self.do_create()
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self.do_create(pre="a")
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self.do_create(suf="b")
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self.do_create(pre="a", suf="b")
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self.do_create(pre="aa", suf=".txt")
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self.do_create(dir=".")
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def test_choose_directory(self):
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# mkstemp can create directories in a user-selected directory
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dir = tempfile.mkdtemp()
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try:
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self.do_create(dir=dir)
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finally:
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os.rmdir(dir)
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class TestMkdtemp(BaseTestCase):
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"""Test mkdtemp()."""
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def do_create(self, dir=None, pre="", suf=""):
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if dir is None:
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dir = tempfile.gettempdir()
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name = tempfile.mkdtemp(dir=dir, prefix=pre, suffix=suf)
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try:
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self.nameCheck(name, dir, pre, suf)
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return name
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except:
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os.rmdir(name)
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raise
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def test_basic(self):
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# mkdtemp can create directories
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os.rmdir(self.do_create())
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os.rmdir(self.do_create(pre="a"))
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os.rmdir(self.do_create(suf="b"))
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os.rmdir(self.do_create(pre="a", suf="b"))
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os.rmdir(self.do_create(pre="aa", suf=".txt"))
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def test_basic_many(self):
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# mkdtemp can create many directories (stochastic)
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extant = list(range(TEST_FILES))
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try:
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for i in extant:
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extant[i] = self.do_create(pre="aa")
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finally:
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for i in extant:
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if(isinstance(i, str)):
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os.rmdir(i)
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def test_choose_directory(self):
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# mkdtemp can create directories in a user-selected directory
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dir = tempfile.mkdtemp()
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try:
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os.rmdir(self.do_create(dir=dir))
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finally:
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os.rmdir(dir)
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def test_mode(self):
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# mkdtemp creates directories with the proper mode
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if not has_stat:
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return # ugh, can't use SkipTest.
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dir = self.do_create()
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try:
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mode = stat.S_IMODE(os.stat(dir).st_mode)
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mode &= 0o777 # Mask off sticky bits inherited from /tmp
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expected = 0o700
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if sys.platform == 'win32':
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# There's no distinction among 'user', 'group' and 'world';
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# replicate the 'user' bits.
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user = expected >> 6
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expected = user * (1 + 8 + 64)
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self.assertEqual(mode, expected)
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finally:
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os.rmdir(dir)
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class TestMktemp(BaseTestCase):
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"""Test mktemp()."""
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# For safety, all use of mktemp must occur in a private directory.
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# We must also suppress the RuntimeWarning it generates.
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def setUp(self):
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self.dir = tempfile.mkdtemp()
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super().setUp()
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def tearDown(self):
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if self.dir:
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os.rmdir(self.dir)
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self.dir = None
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super().tearDown()
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class mktemped:
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_unlink = os.unlink
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_bflags = tempfile._bin_openflags
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def __init__(self, dir, pre, suf):
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self.name = tempfile.mktemp(dir=dir, prefix=pre, suffix=suf)
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# Create the file. This will raise an exception if it's
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# mysteriously appeared in the meanwhile.
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os.close(os.open(self.name, self._bflags, 0o600))
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def __del__(self):
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self._unlink(self.name)
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def do_create(self, pre="", suf=""):
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file = self.mktemped(self.dir, pre, suf)
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self.nameCheck(file.name, self.dir, pre, suf)
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return file
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def test_basic(self):
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# mktemp can choose usable file names
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self.do_create()
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self.do_create(pre="a")
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self.do_create(suf="b")
|
|
self.do_create(pre="a", suf="b")
|
|
self.do_create(pre="aa", suf=".txt")
|
|
|
|
def test_many(self):
|
|
# mktemp can choose many usable file names (stochastic)
|
|
extant = list(range(TEST_FILES))
|
|
for i in extant:
|
|
extant[i] = self.do_create(pre="aa")
|
|
|
|
## def test_warning(self):
|
|
## # mktemp issues a warning when used
|
|
## warnings.filterwarnings("error",
|
|
## category=RuntimeWarning,
|
|
## message="mktemp")
|
|
## self.assertRaises(RuntimeWarning,
|
|
## tempfile.mktemp, dir=self.dir)
|
|
|
|
|
|
# We test _TemporaryFileWrapper by testing NamedTemporaryFile.
|
|
|
|
|
|
class TestNamedTemporaryFile(BaseTestCase):
|
|
"""Test NamedTemporaryFile()."""
|
|
|
|
def do_create(self, dir=None, pre="", suf="", delete=True):
|
|
if dir is None:
|
|
dir = tempfile.gettempdir()
|
|
file = tempfile.NamedTemporaryFile(dir=dir, prefix=pre, suffix=suf,
|
|
delete=delete)
|
|
|
|
self.nameCheck(file.name, dir, pre, suf)
|
|
return file
|
|
|
|
|
|
def test_basic(self):
|
|
# NamedTemporaryFile can create files
|
|
self.do_create()
|
|
self.do_create(pre="a")
|
|
self.do_create(suf="b")
|
|
self.do_create(pre="a", suf="b")
|
|
self.do_create(pre="aa", suf=".txt")
|
|
|
|
def test_creates_named(self):
|
|
# NamedTemporaryFile creates files with names
|
|
f = tempfile.NamedTemporaryFile()
|
|
self.assertTrue(os.path.exists(f.name),
|
|
"NamedTemporaryFile %s does not exist" % f.name)
|
|
|
|
def test_del_on_close(self):
|
|
# A NamedTemporaryFile is deleted when closed
|
|
dir = tempfile.mkdtemp()
|
|
try:
|
|
f = tempfile.NamedTemporaryFile(dir=dir)
|
|
f.write(b'blat')
|
|
f.close()
|
|
self.assertFalse(os.path.exists(f.name),
|
|
"NamedTemporaryFile %s exists after close" % f.name)
|
|
finally:
|
|
os.rmdir(dir)
|
|
|
|
def test_dis_del_on_close(self):
|
|
# Tests that delete-on-close can be disabled
|
|
dir = tempfile.mkdtemp()
|
|
tmp = None
|
|
try:
|
|
f = tempfile.NamedTemporaryFile(dir=dir, delete=False)
|
|
tmp = f.name
|
|
f.write(b'blat')
|
|
f.close()
|
|
self.assertTrue(os.path.exists(f.name),
|
|
"NamedTemporaryFile %s missing after close" % f.name)
|
|
finally:
|
|
if tmp is not None:
|
|
os.unlink(tmp)
|
|
os.rmdir(dir)
|
|
|
|
def test_multiple_close(self):
|
|
# A NamedTemporaryFile can be closed many times without error
|
|
f = tempfile.NamedTemporaryFile()
|
|
f.write(b'abc\n')
|
|
f.close()
|
|
f.close()
|
|
f.close()
|
|
|
|
def test_context_manager(self):
|
|
# A NamedTemporaryFile can be used as a context manager
|
|
with tempfile.NamedTemporaryFile() as f:
|
|
self.assertTrue(os.path.exists(f.name))
|
|
self.assertFalse(os.path.exists(f.name))
|
|
def use_closed():
|
|
with f:
|
|
pass
|
|
self.assertRaises(ValueError, use_closed)
|
|
|
|
# How to test the mode and bufsize parameters?
|
|
|
|
|
|
class TestSpooledTemporaryFile(BaseTestCase):
|
|
"""Test SpooledTemporaryFile()."""
|
|
|
|
def do_create(self, max_size=0, dir=None, pre="", suf=""):
|
|
if dir is None:
|
|
dir = tempfile.gettempdir()
|
|
file = tempfile.SpooledTemporaryFile(max_size=max_size, dir=dir, prefix=pre, suffix=suf)
|
|
|
|
return file
|
|
|
|
|
|
def test_basic(self):
|
|
# SpooledTemporaryFile can create files
|
|
f = self.do_create()
|
|
self.assertFalse(f._rolled)
|
|
f = self.do_create(max_size=100, pre="a", suf=".txt")
|
|
self.assertFalse(f._rolled)
|
|
|
|
def test_del_on_close(self):
|
|
# A SpooledTemporaryFile is deleted when closed
|
|
dir = tempfile.mkdtemp()
|
|
try:
|
|
f = tempfile.SpooledTemporaryFile(max_size=10, dir=dir)
|
|
self.assertFalse(f._rolled)
|
|
f.write(b'blat ' * 5)
|
|
self.assertTrue(f._rolled)
|
|
filename = f.name
|
|
f.close()
|
|
self.assertFalse(isinstance(filename, str) and os.path.exists(filename),
|
|
"SpooledTemporaryFile %s exists after close" % filename)
|
|
finally:
|
|
os.rmdir(dir)
|
|
|
|
def test_rewrite_small(self):
|
|
# A SpooledTemporaryFile can be written to multiple within the max_size
|
|
f = self.do_create(max_size=30)
|
|
self.assertFalse(f._rolled)
|
|
for i in range(5):
|
|
f.seek(0, 0)
|
|
f.write(b'x' * 20)
|
|
self.assertFalse(f._rolled)
|
|
|
|
def test_write_sequential(self):
|
|
# A SpooledTemporaryFile should hold exactly max_size bytes, and roll
|
|
# over afterward
|
|
f = self.do_create(max_size=30)
|
|
self.assertFalse(f._rolled)
|
|
f.write(b'x' * 20)
|
|
self.assertFalse(f._rolled)
|
|
f.write(b'x' * 10)
|
|
self.assertFalse(f._rolled)
|
|
f.write(b'x')
|
|
self.assertTrue(f._rolled)
|
|
|
|
def test_writelines(self):
|
|
# Verify writelines with a SpooledTemporaryFile
|
|
f = self.do_create()
|
|
f.writelines((b'x', b'y', b'z'))
|
|
f.seek(0)
|
|
buf = f.read()
|
|
self.assertEqual(buf, b'xyz')
|
|
|
|
def test_writelines_sequential(self):
|
|
# A SpooledTemporaryFile should hold exactly max_size bytes, and roll
|
|
# over afterward
|
|
f = self.do_create(max_size=35)
|
|
f.writelines((b'x' * 20, b'x' * 10, b'x' * 5))
|
|
self.assertFalse(f._rolled)
|
|
f.write(b'x')
|
|
self.assertTrue(f._rolled)
|
|
|
|
def test_sparse(self):
|
|
# A SpooledTemporaryFile that is written late in the file will extend
|
|
# when that occurs
|
|
f = self.do_create(max_size=30)
|
|
self.assertFalse(f._rolled)
|
|
f.seek(100, 0)
|
|
self.assertFalse(f._rolled)
|
|
f.write(b'x')
|
|
self.assertTrue(f._rolled)
|
|
|
|
def test_fileno(self):
|
|
# A SpooledTemporaryFile should roll over to a real file on fileno()
|
|
f = self.do_create(max_size=30)
|
|
self.assertFalse(f._rolled)
|
|
self.assertTrue(f.fileno() > 0)
|
|
self.assertTrue(f._rolled)
|
|
|
|
def test_multiple_close_before_rollover(self):
|
|
# A SpooledTemporaryFile can be closed many times without error
|
|
f = tempfile.SpooledTemporaryFile()
|
|
f.write(b'abc\n')
|
|
self.assertFalse(f._rolled)
|
|
f.close()
|
|
f.close()
|
|
f.close()
|
|
|
|
def test_multiple_close_after_rollover(self):
|
|
# A SpooledTemporaryFile can be closed many times without error
|
|
f = tempfile.SpooledTemporaryFile(max_size=1)
|
|
f.write(b'abc\n')
|
|
self.assertTrue(f._rolled)
|
|
f.close()
|
|
f.close()
|
|
f.close()
|
|
|
|
def test_bound_methods(self):
|
|
# It should be OK to steal a bound method from a SpooledTemporaryFile
|
|
# and use it independently; when the file rolls over, those bound
|
|
# methods should continue to function
|
|
f = self.do_create(max_size=30)
|
|
read = f.read
|
|
write = f.write
|
|
seek = f.seek
|
|
|
|
write(b"a" * 35)
|
|
write(b"b" * 35)
|
|
seek(0, 0)
|
|
self.assertEqual(read(70), b'a'*35 + b'b'*35)
|
|
|
|
def test_text_mode(self):
|
|
# Creating a SpooledTemporaryFile with a text mode should produce
|
|
# a file object reading and writing (Unicode) text strings.
|
|
f = tempfile.SpooledTemporaryFile(mode='w+', max_size=10)
|
|
f.write("abc\n")
|
|
f.seek(0)
|
|
self.assertEqual(f.read(), "abc\n")
|
|
f.write("def\n")
|
|
f.seek(0)
|
|
self.assertEqual(f.read(), "abc\ndef\n")
|
|
f.write("xyzzy\n")
|
|
f.seek(0)
|
|
self.assertEqual(f.read(), "abc\ndef\nxyzzy\n")
|
|
# Check that Ctrl+Z doesn't truncate the file
|
|
f.write("foo\x1abar\n")
|
|
f.seek(0)
|
|
self.assertEqual(f.read(), "abc\ndef\nxyzzy\nfoo\x1abar\n")
|
|
|
|
def test_text_newline_and_encoding(self):
|
|
f = tempfile.SpooledTemporaryFile(mode='w+', max_size=10,
|
|
newline='', encoding='utf-8')
|
|
f.write("\u039B\r\n")
|
|
f.seek(0)
|
|
self.assertEqual(f.read(), "\u039B\r\n")
|
|
self.assertFalse(f._rolled)
|
|
|
|
f.write("\u039B" * 20 + "\r\n")
|
|
f.seek(0)
|
|
self.assertEqual(f.read(), "\u039B\r\n" + ("\u039B" * 20) + "\r\n")
|
|
self.assertTrue(f._rolled)
|
|
|
|
def test_context_manager_before_rollover(self):
|
|
# A SpooledTemporaryFile can be used as a context manager
|
|
with tempfile.SpooledTemporaryFile(max_size=1) as f:
|
|
self.assertFalse(f._rolled)
|
|
self.assertFalse(f.closed)
|
|
self.assertTrue(f.closed)
|
|
def use_closed():
|
|
with f:
|
|
pass
|
|
self.assertRaises(ValueError, use_closed)
|
|
|
|
def test_context_manager_during_rollover(self):
|
|
# A SpooledTemporaryFile can be used as a context manager
|
|
with tempfile.SpooledTemporaryFile(max_size=1) as f:
|
|
self.assertFalse(f._rolled)
|
|
f.write(b'abc\n')
|
|
f.flush()
|
|
self.assertTrue(f._rolled)
|
|
self.assertFalse(f.closed)
|
|
self.assertTrue(f.closed)
|
|
def use_closed():
|
|
with f:
|
|
pass
|
|
self.assertRaises(ValueError, use_closed)
|
|
|
|
def test_context_manager_after_rollover(self):
|
|
# A SpooledTemporaryFile can be used as a context manager
|
|
f = tempfile.SpooledTemporaryFile(max_size=1)
|
|
f.write(b'abc\n')
|
|
f.flush()
|
|
self.assertTrue(f._rolled)
|
|
with f:
|
|
self.assertFalse(f.closed)
|
|
self.assertTrue(f.closed)
|
|
def use_closed():
|
|
with f:
|
|
pass
|
|
self.assertRaises(ValueError, use_closed)
|
|
|
|
def test_truncate_with_size_parameter(self):
|
|
# A SpooledTemporaryFile can be truncated to zero size
|
|
f = tempfile.SpooledTemporaryFile(max_size=10)
|
|
f.write(b'abcdefg\n')
|
|
f.seek(0)
|
|
f.truncate()
|
|
self.assertFalse(f._rolled)
|
|
self.assertEqual(f._file.getvalue(), b'')
|
|
# A SpooledTemporaryFile can be truncated to a specific size
|
|
f = tempfile.SpooledTemporaryFile(max_size=10)
|
|
f.write(b'abcdefg\n')
|
|
f.truncate(4)
|
|
self.assertFalse(f._rolled)
|
|
self.assertEqual(f._file.getvalue(), b'abcd')
|
|
# A SpooledTemporaryFile rolls over if truncated to large size
|
|
f = tempfile.SpooledTemporaryFile(max_size=10)
|
|
f.write(b'abcdefg\n')
|
|
f.truncate(20)
|
|
self.assertTrue(f._rolled)
|
|
if has_stat:
|
|
self.assertEqual(os.fstat(f.fileno()).st_size, 20)
|
|
|
|
|
|
if tempfile.NamedTemporaryFile is not tempfile.TemporaryFile:
|
|
|
|
class TestTemporaryFile(BaseTestCase):
|
|
"""Test TemporaryFile()."""
|
|
|
|
def test_basic(self):
|
|
# TemporaryFile can create files
|
|
# No point in testing the name params - the file has no name.
|
|
tempfile.TemporaryFile()
|
|
|
|
def test_has_no_name(self):
|
|
# TemporaryFile creates files with no names (on this system)
|
|
dir = tempfile.mkdtemp()
|
|
f = tempfile.TemporaryFile(dir=dir)
|
|
f.write(b'blat')
|
|
|
|
# Sneaky: because this file has no name, it should not prevent
|
|
# us from removing the directory it was created in.
|
|
try:
|
|
os.rmdir(dir)
|
|
except:
|
|
# cleanup
|
|
f.close()
|
|
os.rmdir(dir)
|
|
raise
|
|
|
|
def test_multiple_close(self):
|
|
# A TemporaryFile can be closed many times without error
|
|
f = tempfile.TemporaryFile()
|
|
f.write(b'abc\n')
|
|
f.close()
|
|
f.close()
|
|
f.close()
|
|
|
|
# How to test the mode and bufsize parameters?
|
|
def test_mode_and_encoding(self):
|
|
|
|
def roundtrip(input, *args, **kwargs):
|
|
with tempfile.TemporaryFile(*args, **kwargs) as fileobj:
|
|
fileobj.write(input)
|
|
fileobj.seek(0)
|
|
self.assertEqual(input, fileobj.read())
|
|
|
|
roundtrip(b"1234", "w+b")
|
|
roundtrip("abdc\n", "w+")
|
|
roundtrip("\u039B", "w+", encoding="utf-16")
|
|
roundtrip("foo\r\n", "w+", newline="")
|
|
|
|
|
|
# Helper for test_del_on_shutdown
|
|
class NulledModules:
|
|
def __init__(self, *modules):
|
|
self.refs = [mod.__dict__ for mod in modules]
|
|
self.contents = [ref.copy() for ref in self.refs]
|
|
|
|
def __enter__(self):
|
|
for d in self.refs:
|
|
for key in d:
|
|
d[key] = None
|
|
|
|
def __exit__(self, *exc_info):
|
|
for d, c in zip(self.refs, self.contents):
|
|
d.clear()
|
|
d.update(c)
|
|
|
|
class TestTemporaryDirectory(BaseTestCase):
|
|
"""Test TemporaryDirectory()."""
|
|
|
|
def do_create(self, dir=None, pre="", suf="", recurse=1):
|
|
if dir is None:
|
|
dir = tempfile.gettempdir()
|
|
tmp = tempfile.TemporaryDirectory(dir=dir, prefix=pre, suffix=suf)
|
|
self.nameCheck(tmp.name, dir, pre, suf)
|
|
# Create a subdirectory and some files
|
|
if recurse:
|
|
self.do_create(tmp.name, pre, suf, recurse-1)
|
|
with open(os.path.join(tmp.name, "test.txt"), "wb") as f:
|
|
f.write(b"Hello world!")
|
|
return tmp
|
|
|
|
def test_mkdtemp_failure(self):
|
|
# Check no additional exception if mkdtemp fails
|
|
# Previously would raise AttributeError instead
|
|
# (noted as part of Issue #10188)
|
|
with tempfile.TemporaryDirectory() as nonexistent:
|
|
pass
|
|
with self.assertRaises(os.error):
|
|
tempfile.TemporaryDirectory(dir=nonexistent)
|
|
|
|
def test_explicit_cleanup(self):
|
|
# A TemporaryDirectory is deleted when cleaned up
|
|
dir = tempfile.mkdtemp()
|
|
try:
|
|
d = self.do_create(dir=dir)
|
|
self.assertTrue(os.path.exists(d.name),
|
|
"TemporaryDirectory %s does not exist" % d.name)
|
|
d.cleanup()
|
|
self.assertFalse(os.path.exists(d.name),
|
|
"TemporaryDirectory %s exists after cleanup" % d.name)
|
|
finally:
|
|
os.rmdir(dir)
|
|
|
|
@support.skip_unless_symlink
|
|
def test_cleanup_with_symlink_to_a_directory(self):
|
|
# cleanup() should not follow symlinks to directories (issue #12464)
|
|
d1 = self.do_create()
|
|
d2 = self.do_create()
|
|
|
|
# Symlink d1/foo -> d2
|
|
os.symlink(d2.name, os.path.join(d1.name, "foo"))
|
|
|
|
# This call to cleanup() should not follow the "foo" symlink
|
|
d1.cleanup()
|
|
|
|
self.assertFalse(os.path.exists(d1.name),
|
|
"TemporaryDirectory %s exists after cleanup" % d1.name)
|
|
self.assertTrue(os.path.exists(d2.name),
|
|
"Directory pointed to by a symlink was deleted")
|
|
self.assertEqual(os.listdir(d2.name), ['test.txt'],
|
|
"Contents of the directory pointed to by a symlink "
|
|
"were deleted")
|
|
d2.cleanup()
|
|
|
|
@support.cpython_only
|
|
def test_del_on_collection(self):
|
|
# A TemporaryDirectory is deleted when garbage collected
|
|
dir = tempfile.mkdtemp()
|
|
try:
|
|
d = self.do_create(dir=dir)
|
|
name = d.name
|
|
del d # Rely on refcounting to invoke __del__
|
|
self.assertFalse(os.path.exists(name),
|
|
"TemporaryDirectory %s exists after __del__" % name)
|
|
finally:
|
|
os.rmdir(dir)
|
|
|
|
@unittest.expectedFailure # See issue #10188
|
|
def test_del_on_shutdown(self):
|
|
# A TemporaryDirectory may be cleaned up during shutdown
|
|
# Make sure it works with the relevant modules nulled out
|
|
with self.do_create() as dir:
|
|
d = self.do_create(dir=dir)
|
|
# Mimic the nulling out of modules that
|
|
# occurs during system shutdown
|
|
modules = [os, os.path]
|
|
if has_stat:
|
|
modules.append(stat)
|
|
# Currently broken, so suppress the warning
|
|
# that is otherwise emitted on stdout
|
|
with support.captured_stderr() as err:
|
|
with NulledModules(*modules):
|
|
d.cleanup()
|
|
# Currently broken, so stop spurious exception by
|
|
# indicating the object has already been closed
|
|
d._closed = True
|
|
# And this assert will fail, as expected by the
|
|
# unittest decorator...
|
|
self.assertFalse(os.path.exists(d.name),
|
|
"TemporaryDirectory %s exists after cleanup" % d.name)
|
|
|
|
def test_warnings_on_cleanup(self):
|
|
# Two kinds of warning on shutdown
|
|
# Issue 10888: may write to stderr if modules are nulled out
|
|
# ResourceWarning will be triggered by __del__
|
|
with self.do_create() as dir:
|
|
if os.sep != '\\':
|
|
# Embed a backslash in order to make sure string escaping
|
|
# in the displayed error message is dealt with correctly
|
|
suffix = '\\check_backslash_handling'
|
|
else:
|
|
suffix = ''
|
|
d = self.do_create(dir=dir, suf=suffix)
|
|
|
|
#Check for the Issue 10888 message
|
|
modules = [os, os.path]
|
|
if has_stat:
|
|
modules.append(stat)
|
|
with support.captured_stderr() as err:
|
|
with NulledModules(*modules):
|
|
d.cleanup()
|
|
message = err.getvalue().replace('\\\\', '\\')
|
|
self.assertIn("while cleaning up", message)
|
|
self.assertIn(d.name, message)
|
|
|
|
# Check for the resource warning
|
|
with support.check_warnings(('Implicitly', ResourceWarning), quiet=False):
|
|
warnings.filterwarnings("always", category=ResourceWarning)
|
|
d.__del__()
|
|
self.assertFalse(os.path.exists(d.name),
|
|
"TemporaryDirectory %s exists after __del__" % d.name)
|
|
|
|
def test_multiple_close(self):
|
|
# Can be cleaned-up many times without error
|
|
d = self.do_create()
|
|
d.cleanup()
|
|
d.cleanup()
|
|
d.cleanup()
|
|
|
|
def test_context_manager(self):
|
|
# Can be used as a context manager
|
|
d = self.do_create()
|
|
with d as name:
|
|
self.assertTrue(os.path.exists(name))
|
|
self.assertEqual(name, d.name)
|
|
self.assertFalse(os.path.exists(name))
|
|
|
|
|
|
def test_main():
|
|
support.run_unittest(__name__)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|