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380 lines
13 KiB
Python
380 lines
13 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 unittest
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import warnings
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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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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$")
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self.check_tempfile(os.tempnam())
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name = os.tempnam(test_support.TESTFN)
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self.check_tempfile(name)
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name = os.tempnam(test_support.TESTFN, "pfx")
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self.assert_(os.path.basename(name)[:3] == "pfx")
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self.check_tempfile(name)
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def test_tmpfile(self):
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if not hasattr(os, "tmpfile"):
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return
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fp = os.tmpfile()
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fp.write("foobar")
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fp.seek(0,0)
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s = fp.read()
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fp.close()
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self.assert_(s == "foobar")
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def test_tmpnam(self):
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import sys
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if not hasattr(os, "tmpnam"):
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return
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warnings.filterwarnings("ignore", "tmpnam", RuntimeWarning,
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r"test_os$")
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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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import statvfs
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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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import errno
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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[statvfs.F_BFREE])
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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(statvfs):
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if name[:2] == 'F_':
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attr = name.lower()
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self.assertEquals(getattr(result, attr),
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result[getattr(statvfs, name)])
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self.assert_(attr in members)
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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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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/ 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/ just a file kid
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# tmp3
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sub1_path = join(test_support.TESTFN, "SUB1")
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sub11_path = join(sub1_path, "SUB11")
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sub2_path = join(test_support.TESTFN, "SUB2")
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tmp1_path = join(test_support.TESTFN, "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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# Create stuff.
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os.makedirs(sub11_path)
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os.makedirs(sub2_path)
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for path in tmp1_path, tmp2_path, tmp3_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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# Walk top-down.
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all = list(os.walk(test_support.TESTFN))
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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], (test_support.TESTFN, ["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_path, [], ["tmp3"]))
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# Prune the search.
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all = []
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for root, dirs, files in os.walk(test_support.TESTFN):
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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], (test_support.TESTFN, ["SUB2"], ["tmp1"]))
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self.assertEqual(all[1], (sub2_path, [], ["tmp3"]))
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# Walk bottom-up.
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all = list(os.walk(test_support.TESTFN, 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], (test_support.TESTFN, ["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_path, [], ["tmp3"]))
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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(join(root, name))
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for name in dirs:
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os.rmdir(join(root, name))
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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)
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os.removedirs(path)
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class DevNullTests (unittest.TestCase):
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def test_devnull(self):
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f = file(os.devnull, 'w')
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f.write('hello')
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f.close()
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f = file(os.devnull, 'r')
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self.assertEqual(f.read(), '')
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f.close()
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class URandomTests (unittest.TestCase):
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def test_urandom(self):
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try:
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self.assertEqual(len(os.urandom(1)), 1)
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self.assertEqual(len(os.urandom(10)), 10)
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self.assertEqual(len(os.urandom(100)), 100)
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self.assertEqual(len(os.urandom(1000)), 1000)
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except NotImplementedError:
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pass
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def test_main():
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test_support.run_unittest(
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TemporaryFileTests,
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StatAttributeTests,
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EnvironTests,
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WalkTests,
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MakedirTests,
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DevNullTests,
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URandomTests
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)
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if __name__ == "__main__":
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test_main()
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