625 lines
22 KiB
Python
625 lines
22 KiB
Python
# As a test suite for the os module, this is woefully inadequate, but this
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# does add tests for a few functions which have been determined to be more
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# portable than they had been thought to be.
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import os
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import errno
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import unittest
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import warnings
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import sys
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from test import test_support
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warnings.filterwarnings("ignore", "tempnam", RuntimeWarning, __name__)
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warnings.filterwarnings("ignore", "tmpnam", RuntimeWarning, __name__)
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# Tests creating TESTFN
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class FileTests(unittest.TestCase):
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def setUp(self):
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if os.path.exists(test_support.TESTFN):
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os.unlink(test_support.TESTFN)
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tearDown = setUp
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def test_access(self):
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f = os.open(test_support.TESTFN, os.O_CREAT|os.O_RDWR)
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os.close(f)
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self.assert_(os.access(test_support.TESTFN, os.W_OK))
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def test_closerange(self):
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first = os.open(test_support.TESTFN, os.O_CREAT|os.O_RDWR)
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# We must allocate two consecutive file descriptors, otherwise
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# it will mess up other file descriptors (perhaps even the three
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# standard ones).
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second = os.dup(first)
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try:
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retries = 0
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while second != first + 1:
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os.close(first)
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retries += 1
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if retries > 10:
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# XXX test skipped
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print >> sys.stderr, (
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"couldn't allocate two consecutive fds, "
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"skipping test_closerange")
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return
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first, second = second, os.dup(second)
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finally:
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os.close(second)
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# close a fd that is open, and one that isn't
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os.closerange(first, first + 2)
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self.assertRaises(OSError, os.write, first, "a")
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def test_rename(self):
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path = unicode(test_support.TESTFN)
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old = sys.getrefcount(path)
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self.assertRaises(TypeError, os.rename, path, 0)
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new = sys.getrefcount(path)
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self.assertEqual(old, new)
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class TemporaryFileTests(unittest.TestCase):
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def setUp(self):
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self.files = []
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os.mkdir(test_support.TESTFN)
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def tearDown(self):
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for name in self.files:
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os.unlink(name)
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os.rmdir(test_support.TESTFN)
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def check_tempfile(self, name):
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# make sure it doesn't already exist:
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self.failIf(os.path.exists(name),
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"file already exists for temporary file")
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# make sure we can create the file
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open(name, "w")
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self.files.append(name)
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def test_tempnam(self):
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if not hasattr(os, "tempnam"):
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return
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warnings.filterwarnings("ignore", "tempnam", RuntimeWarning,
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r"test_os$")
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self.check_tempfile(os.tempnam())
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name = os.tempnam(test_support.TESTFN)
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self.check_tempfile(name)
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name = os.tempnam(test_support.TESTFN, "pfx")
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self.assert_(os.path.basename(name)[:3] == "pfx")
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self.check_tempfile(name)
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def test_tmpfile(self):
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if not hasattr(os, "tmpfile"):
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return
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# As with test_tmpnam() below, the Windows implementation of tmpfile()
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# attempts to create a file in the root directory of the current drive.
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# On Vista and Server 2008, this test will always fail for normal users
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# as writing to the root directory requires elevated privileges. With
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# XP and below, the semantics of tmpfile() are the same, but the user
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# running the test is more likely to have administrative privileges on
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# their account already. If that's the case, then os.tmpfile() should
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# work. In order to make this test as useful as possible, rather than
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# trying to detect Windows versions or whether or not the user has the
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# right permissions, just try and create a file in the root directory
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# and see if it raises a 'Permission denied' OSError. If it does, then
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# test that a subsequent call to os.tmpfile() raises the same error. If
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# it doesn't, assume we're on XP or below and the user running the test
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# has administrative privileges, and proceed with the test as normal.
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if sys.platform == 'win32':
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name = '\\python_test_os_test_tmpfile.txt'
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if os.path.exists(name):
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os.remove(name)
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try:
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fp = open(name, 'w')
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except IOError, first:
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# open() failed, assert tmpfile() fails in the same way.
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# Although open() raises an IOError and os.tmpfile() raises an
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# OSError(), 'args' will be (13, 'Permission denied') in both
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# cases.
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try:
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fp = os.tmpfile()
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except OSError, second:
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self.assertEqual(first.args, second.args)
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else:
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self.fail("expected os.tmpfile() to raise OSError")
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return
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else:
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# open() worked, therefore, tmpfile() should work. Close our
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# dummy file and proceed with the test as normal.
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fp.close()
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os.remove(name)
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fp = os.tmpfile()
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fp.write("foobar")
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fp.seek(0,0)
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s = fp.read()
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fp.close()
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self.assert_(s == "foobar")
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def test_tmpnam(self):
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import sys
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if not hasattr(os, "tmpnam"):
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return
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warnings.filterwarnings("ignore", "tmpnam", RuntimeWarning,
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r"test_os$")
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name = os.tmpnam()
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if sys.platform in ("win32",):
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# The Windows tmpnam() seems useless. From the MS docs:
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#
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# The character string that tmpnam creates consists of
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# the path prefix, defined by the entry P_tmpdir in the
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# file STDIO.H, followed by a sequence consisting of the
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# digit characters '0' through '9'; the numerical value
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# of this string is in the range 1 - 65,535. Changing the
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# definitions of L_tmpnam or P_tmpdir in STDIO.H does not
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# change the operation of tmpnam.
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#
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# The really bizarre part is that, at least under MSVC6,
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# P_tmpdir is "\\". That is, the path returned refers to
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# the root of the current drive. That's a terrible place to
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# put temp files, and, depending on privileges, the user
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# may not even be able to open a file in the root directory.
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self.failIf(os.path.exists(name),
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"file already exists for temporary file")
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else:
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self.check_tempfile(name)
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# Test attributes on return values from os.*stat* family.
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class StatAttributeTests(unittest.TestCase):
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def setUp(self):
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os.mkdir(test_support.TESTFN)
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self.fname = os.path.join(test_support.TESTFN, "f1")
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f = open(self.fname, 'wb')
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f.write("ABC")
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f.close()
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def tearDown(self):
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os.unlink(self.fname)
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os.rmdir(test_support.TESTFN)
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def test_stat_attributes(self):
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if not hasattr(os, "stat"):
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return
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import stat
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result = os.stat(self.fname)
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# Make sure direct access works
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self.assertEquals(result[stat.ST_SIZE], 3)
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self.assertEquals(result.st_size, 3)
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import sys
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# Make sure all the attributes are there
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members = dir(result)
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for name in dir(stat):
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if name[:3] == 'ST_':
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attr = name.lower()
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if name.endswith("TIME"):
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def trunc(x): return int(x)
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else:
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def trunc(x): return x
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self.assertEquals(trunc(getattr(result, attr)),
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result[getattr(stat, name)])
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self.assert_(attr in members)
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try:
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result[200]
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self.fail("No exception thrown")
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except IndexError:
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pass
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# Make sure that assignment fails
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try:
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result.st_mode = 1
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self.fail("No exception thrown")
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except TypeError:
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pass
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try:
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result.st_rdev = 1
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self.fail("No exception thrown")
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except (AttributeError, TypeError):
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pass
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try:
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result.parrot = 1
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self.fail("No exception thrown")
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except AttributeError:
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pass
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# Use the stat_result constructor with a too-short tuple.
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try:
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result2 = os.stat_result((10,))
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self.fail("No exception thrown")
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except TypeError:
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pass
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# Use the constructr with a too-long tuple.
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try:
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result2 = os.stat_result((0,1,2,3,4,5,6,7,8,9,10,11,12,13,14))
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except TypeError:
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pass
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def test_statvfs_attributes(self):
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if not hasattr(os, "statvfs"):
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return
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try:
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result = os.statvfs(self.fname)
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except OSError, e:
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# On AtheOS, glibc always returns ENOSYS
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if e.errno == errno.ENOSYS:
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return
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# Make sure direct access works
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self.assertEquals(result.f_bfree, result[3])
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# Make sure all the attributes are there.
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members = ('bsize', 'frsize', 'blocks', 'bfree', 'bavail', 'files',
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'ffree', 'favail', 'flag', 'namemax')
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for value, member in enumerate(members):
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self.assertEquals(getattr(result, 'f_' + member), result[value])
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# Make sure that assignment really fails
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try:
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result.f_bfree = 1
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self.fail("No exception thrown")
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except TypeError:
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pass
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try:
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result.parrot = 1
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self.fail("No exception thrown")
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except AttributeError:
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pass
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# Use the constructor with a too-short tuple.
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try:
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result2 = os.statvfs_result((10,))
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self.fail("No exception thrown")
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except TypeError:
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pass
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# Use the constructr with a too-long tuple.
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try:
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result2 = os.statvfs_result((0,1,2,3,4,5,6,7,8,9,10,11,12,13,14))
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except TypeError:
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pass
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def test_utime_dir(self):
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delta = 1000000
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st = os.stat(test_support.TESTFN)
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# round to int, because some systems may support sub-second
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# time stamps in stat, but not in utime.
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os.utime(test_support.TESTFN, (st.st_atime, int(st.st_mtime-delta)))
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st2 = os.stat(test_support.TESTFN)
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self.assertEquals(st2.st_mtime, int(st.st_mtime-delta))
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# Restrict test to Win32, since there is no guarantee other
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# systems support centiseconds
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if sys.platform == 'win32':
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def get_file_system(path):
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root = os.path.splitdrive(os.path.abspath(path))[0] + '\\'
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import ctypes
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kernel32 = ctypes.windll.kernel32
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buf = ctypes.create_string_buffer("", 100)
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if kernel32.GetVolumeInformationA(root, None, 0, None, None, None, buf, len(buf)):
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return buf.value
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if get_file_system(test_support.TESTFN) == "NTFS":
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def test_1565150(self):
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t1 = 1159195039.25
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os.utime(self.fname, (t1, t1))
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self.assertEquals(os.stat(self.fname).st_mtime, t1)
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def test_1686475(self):
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# Verify that an open file can be stat'ed
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try:
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os.stat(r"c:\pagefile.sys")
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except WindowsError, e:
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if e.errno == 2: # file does not exist; cannot run test
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return
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self.fail("Could not stat pagefile.sys")
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from test import mapping_tests
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class EnvironTests(mapping_tests.BasicTestMappingProtocol):
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"""check that os.environ object conform to mapping protocol"""
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type2test = None
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def _reference(self):
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return {"KEY1":"VALUE1", "KEY2":"VALUE2", "KEY3":"VALUE3"}
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def _empty_mapping(self):
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os.environ.clear()
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return os.environ
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def setUp(self):
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self.__save = dict(os.environ)
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os.environ.clear()
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def tearDown(self):
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os.environ.clear()
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os.environ.update(self.__save)
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# Bug 1110478
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def test_update2(self):
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if os.path.exists("/bin/sh"):
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os.environ.update(HELLO="World")
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value = os.popen("/bin/sh -c 'echo $HELLO'").read().strip()
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self.assertEquals(value, "World")
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class WalkTests(unittest.TestCase):
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"""Tests for os.walk()."""
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def test_traversal(self):
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import os
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from os.path import join
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# Build:
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# TESTFN/
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# TEST1/ a file kid and two directory kids
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# tmp1
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# SUB1/ a file kid and a directory kid
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# tmp2
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# SUB11/ no kids
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# SUB2/ a file kid and a dirsymlink kid
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# tmp3
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# link/ a symlink to TESTFN.2
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# TEST2/
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# tmp4 a lone file
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walk_path = join(test_support.TESTFN, "TEST1")
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sub1_path = join(walk_path, "SUB1")
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sub11_path = join(sub1_path, "SUB11")
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sub2_path = join(walk_path, "SUB2")
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tmp1_path = join(walk_path, "tmp1")
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tmp2_path = join(sub1_path, "tmp2")
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tmp3_path = join(sub2_path, "tmp3")
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link_path = join(sub2_path, "link")
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t2_path = join(test_support.TESTFN, "TEST2")
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tmp4_path = join(test_support.TESTFN, "TEST2", "tmp4")
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# Create stuff.
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os.makedirs(sub11_path)
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os.makedirs(sub2_path)
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os.makedirs(t2_path)
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for path in tmp1_path, tmp2_path, tmp3_path, tmp4_path:
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f = file(path, "w")
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f.write("I'm " + path + " and proud of it. Blame test_os.\n")
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f.close()
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if hasattr(os, "symlink"):
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os.symlink(os.path.abspath(t2_path), link_path)
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sub2_tree = (sub2_path, ["link"], ["tmp3"])
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else:
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sub2_tree = (sub2_path, [], ["tmp3"])
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# Walk top-down.
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all = list(os.walk(walk_path))
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self.assertEqual(len(all), 4)
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# We can't know which order SUB1 and SUB2 will appear in.
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# Not flipped: TESTFN, SUB1, SUB11, SUB2
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# flipped: TESTFN, SUB2, SUB1, SUB11
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flipped = all[0][1][0] != "SUB1"
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all[0][1].sort()
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self.assertEqual(all[0], (walk_path, ["SUB1", "SUB2"], ["tmp1"]))
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self.assertEqual(all[1 + flipped], (sub1_path, ["SUB11"], ["tmp2"]))
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self.assertEqual(all[2 + flipped], (sub11_path, [], []))
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self.assertEqual(all[3 - 2 * flipped], sub2_tree)
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# Prune the search.
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all = []
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for root, dirs, files in os.walk(walk_path):
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all.append((root, dirs, files))
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# Don't descend into SUB1.
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if 'SUB1' in dirs:
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# Note that this also mutates the dirs we appended to all!
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dirs.remove('SUB1')
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self.assertEqual(len(all), 2)
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self.assertEqual(all[0], (walk_path, ["SUB2"], ["tmp1"]))
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self.assertEqual(all[1], sub2_tree)
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# Walk bottom-up.
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all = list(os.walk(walk_path, topdown=False))
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self.assertEqual(len(all), 4)
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# We can't know which order SUB1 and SUB2 will appear in.
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# Not flipped: SUB11, SUB1, SUB2, TESTFN
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# flipped: SUB2, SUB11, SUB1, TESTFN
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flipped = all[3][1][0] != "SUB1"
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all[3][1].sort()
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self.assertEqual(all[3], (walk_path, ["SUB1", "SUB2"], ["tmp1"]))
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self.assertEqual(all[flipped], (sub11_path, [], []))
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self.assertEqual(all[flipped + 1], (sub1_path, ["SUB11"], ["tmp2"]))
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self.assertEqual(all[2 - 2 * flipped], sub2_tree)
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if hasattr(os, "symlink"):
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# Walk, following symlinks.
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for root, dirs, files in os.walk(walk_path, followlinks=True):
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if root == link_path:
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self.assertEqual(dirs, [])
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self.assertEqual(files, ["tmp4"])
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break
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else:
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self.fail("Didn't follow symlink with followlinks=True")
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def tearDown(self):
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# Tear everything down. This is a decent use for bottom-up on
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# Windows, which doesn't have a recursive delete command. The
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# (not so) subtlety is that rmdir will fail unless the dir's
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# kids are removed first, so bottom up is essential.
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for root, dirs, files in os.walk(test_support.TESTFN, topdown=False):
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for name in files:
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os.remove(os.path.join(root, name))
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for name in dirs:
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dirname = os.path.join(root, name)
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if not os.path.islink(dirname):
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os.rmdir(dirname)
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else:
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os.remove(dirname)
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os.rmdir(test_support.TESTFN)
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class MakedirTests (unittest.TestCase):
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def setUp(self):
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os.mkdir(test_support.TESTFN)
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def test_makedir(self):
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base = test_support.TESTFN
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path = os.path.join(base, 'dir1', 'dir2', 'dir3')
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os.makedirs(path) # Should work
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path = os.path.join(base, 'dir1', 'dir2', 'dir3', 'dir4')
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os.makedirs(path)
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# Try paths with a '.' in them
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self.failUnlessRaises(OSError, os.makedirs, os.curdir)
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path = os.path.join(base, 'dir1', 'dir2', 'dir3', 'dir4', 'dir5', os.curdir)
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os.makedirs(path)
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path = os.path.join(base, 'dir1', os.curdir, 'dir2', 'dir3', 'dir4',
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'dir5', 'dir6')
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os.makedirs(path)
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def tearDown(self):
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path = os.path.join(test_support.TESTFN, 'dir1', 'dir2', 'dir3',
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'dir4', 'dir5', 'dir6')
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# If the tests failed, the bottom-most directory ('../dir6')
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# may not have been created, so we look for the outermost directory
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# that exists.
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while not os.path.exists(path) and path != test_support.TESTFN:
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path = os.path.dirname(path)
|
|
|
|
os.removedirs(path)
|
|
|
|
class DevNullTests (unittest.TestCase):
|
|
def test_devnull(self):
|
|
f = file(os.devnull, 'w')
|
|
f.write('hello')
|
|
f.close()
|
|
f = file(os.devnull, 'r')
|
|
self.assertEqual(f.read(), '')
|
|
f.close()
|
|
|
|
class URandomTests (unittest.TestCase):
|
|
def test_urandom(self):
|
|
try:
|
|
self.assertEqual(len(os.urandom(1)), 1)
|
|
self.assertEqual(len(os.urandom(10)), 10)
|
|
self.assertEqual(len(os.urandom(100)), 100)
|
|
self.assertEqual(len(os.urandom(1000)), 1000)
|
|
# see http://bugs.python.org/issue3708
|
|
with test_support.check_warnings():
|
|
# silence deprecation warnings about float arguments
|
|
self.assertEqual(len(os.urandom(0.9)), 0)
|
|
self.assertEqual(len(os.urandom(1.1)), 1)
|
|
self.assertEqual(len(os.urandom(2.0)), 2)
|
|
except NotImplementedError:
|
|
pass
|
|
|
|
class Win32ErrorTests(unittest.TestCase):
|
|
def test_rename(self):
|
|
self.assertRaises(WindowsError, os.rename, test_support.TESTFN, test_support.TESTFN+".bak")
|
|
|
|
def test_remove(self):
|
|
self.assertRaises(WindowsError, os.remove, test_support.TESTFN)
|
|
|
|
def test_chdir(self):
|
|
self.assertRaises(WindowsError, os.chdir, test_support.TESTFN)
|
|
|
|
def test_mkdir(self):
|
|
self.assertRaises(WindowsError, os.chdir, test_support.TESTFN)
|
|
|
|
def test_utime(self):
|
|
self.assertRaises(WindowsError, os.utime, test_support.TESTFN, None)
|
|
|
|
def test_access(self):
|
|
self.assertRaises(WindowsError, os.utime, test_support.TESTFN, 0)
|
|
|
|
def test_chmod(self):
|
|
self.assertRaises(WindowsError, os.utime, test_support.TESTFN, 0)
|
|
|
|
class TestInvalidFD(unittest.TestCase):
|
|
singles = ["fchdir", "fdopen", "dup", "fdatasync", "fstat",
|
|
"fstatvfs", "fsync", "tcgetpgrp", "ttyname"]
|
|
#singles.append("close")
|
|
#We omit close because it doesn'r raise an exception on some platforms
|
|
def get_single(f):
|
|
def helper(self):
|
|
if hasattr(os, f):
|
|
self.check(getattr(os, f))
|
|
return helper
|
|
for f in singles:
|
|
locals()["test_"+f] = get_single(f)
|
|
|
|
def check(self, f, *args):
|
|
try:
|
|
f(test_support.make_bad_fd(), *args)
|
|
except OSError as e:
|
|
self.assertEqual(e.errno, errno.EBADF)
|
|
else:
|
|
self.fail("%r didn't raise a OSError with a bad file descriptor"
|
|
% f)
|
|
|
|
def test_isatty(self):
|
|
if hasattr(os, "isatty"):
|
|
self.assertEqual(os.isatty(test_support.make_bad_fd()), False)
|
|
|
|
def test_closerange(self):
|
|
if hasattr(os, "closerange"):
|
|
fd = test_support.make_bad_fd()
|
|
self.assertEqual(os.closerange(fd, fd + 10), None)
|
|
|
|
def test_dup2(self):
|
|
if hasattr(os, "dup2"):
|
|
self.check(os.dup2, 20)
|
|
|
|
def test_fchmod(self):
|
|
if hasattr(os, "fchmod"):
|
|
self.check(os.fchmod, 0)
|
|
|
|
def test_fchown(self):
|
|
if hasattr(os, "fchown"):
|
|
self.check(os.fchown, -1, -1)
|
|
|
|
def test_fpathconf(self):
|
|
if hasattr(os, "fpathconf"):
|
|
self.check(os.fpathconf, "PC_NAME_MAX")
|
|
|
|
def test_ftruncate(self):
|
|
if hasattr(os, "ftruncate"):
|
|
self.check(os.ftruncate, 0)
|
|
|
|
def test_lseek(self):
|
|
if hasattr(os, "lseek"):
|
|
self.check(os.lseek, 0, 0)
|
|
|
|
def test_read(self):
|
|
if hasattr(os, "read"):
|
|
self.check(os.read, 1)
|
|
|
|
def test_tcsetpgrpt(self):
|
|
if hasattr(os, "tcsetpgrp"):
|
|
self.check(os.tcsetpgrp, 0)
|
|
|
|
def test_write(self):
|
|
if hasattr(os, "write"):
|
|
self.check(os.write, " ")
|
|
|
|
if sys.platform != 'win32':
|
|
class Win32ErrorTests(unittest.TestCase):
|
|
pass
|
|
|
|
def test_main():
|
|
test_support.run_unittest(
|
|
FileTests,
|
|
TemporaryFileTests,
|
|
StatAttributeTests,
|
|
EnvironTests,
|
|
WalkTests,
|
|
MakedirTests,
|
|
DevNullTests,
|
|
URandomTests,
|
|
Win32ErrorTests,
|
|
TestInvalidFD
|
|
)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|