| # As a test suite for the os module, this is woefully inadequate, but this |
| # does add tests for a few functions which have been determined to be more |
| # portable than they had been thought to be. |
| |
| import os |
| import unittest |
| import warnings |
| import sys |
| from test import test_support |
| |
| # Tests creating TESTFN |
| class FileTests(unittest.TestCase): |
| def setUp(self): |
| if os.path.exists(test_support.TESTFN): |
| os.unlink(test_support.TESTFN) |
| tearDown = setUp |
| |
| def test_access(self): |
| f = os.open(test_support.TESTFN, os.O_CREAT|os.O_RDWR) |
| os.close(f) |
| self.assert_(os.access(test_support.TESTFN, os.W_OK)) |
| |
| def test_closerange(self): |
| f = os.open(test_support.TESTFN, os.O_CREAT|os.O_RDWR) |
| # close a fd that is open, and one that isn't |
| os.closerange(f, f+2) |
| self.assertRaises(OSError, os.write, f, "a") |
| |
| class TemporaryFileTests(unittest.TestCase): |
| def setUp(self): |
| self.files = [] |
| os.mkdir(test_support.TESTFN) |
| |
| def tearDown(self): |
| for name in self.files: |
| os.unlink(name) |
| os.rmdir(test_support.TESTFN) |
| |
| def check_tempfile(self, name): |
| # make sure it doesn't already exist: |
| self.failIf(os.path.exists(name), |
| "file already exists for temporary file") |
| # make sure we can create the file |
| open(name, "w") |
| self.files.append(name) |
| |
| def test_tempnam(self): |
| if not hasattr(os, "tempnam"): |
| return |
| warnings.filterwarnings("ignore", "tempnam", RuntimeWarning, |
| r"test_os$") |
| self.check_tempfile(os.tempnam()) |
| |
| name = os.tempnam(test_support.TESTFN) |
| self.check_tempfile(name) |
| |
| name = os.tempnam(test_support.TESTFN, "pfx") |
| self.assert_(os.path.basename(name)[:3] == "pfx") |
| self.check_tempfile(name) |
| |
| def test_tmpfile(self): |
| if not hasattr(os, "tmpfile"): |
| return |
| # As with test_tmpnam() below, the Windows implementation of tmpfile() |
| # attempts to create a file in the root directory of the current drive. |
| # On Vista and Server 2008, this test will always fail for normal users |
| # as writing to the root directory requires elevated privileges. With |
| # XP and below, the semantics of tmpfile() are the same, but the user |
| # running the test is more likely to have administrative privileges on |
| # their account already. If that's the case, then os.tmpfile() should |
| # work. In order to make this test as useful as possible, rather than |
| # trying to detect Windows versions or whether or not the user has the |
| # right permissions, just try and create a file in the root directory |
| # and see if it raises a 'Permission denied' OSError. If it does, then |
| # test that a subsequent call to os.tmpfile() raises the same error. If |
| # it doesn't, assume we're on XP or below and the user running the test |
| # has administrative privileges, and proceed with the test as normal. |
| if sys.platform == 'win32': |
| name = '\\python_test_os_test_tmpfile.txt' |
| if os.path.exists(name): |
| os.remove(name) |
| try: |
| fp = open(name, 'w') |
| except IOError as first: |
| # open() failed, assert tmpfile() fails in the same way. |
| # Although open() raises an IOError and os.tmpfile() raises an |
| # OSError(), 'args' will be (13, 'Permission denied') in both |
| # cases. |
| try: |
| fp = os.tmpfile() |
| except OSError as second: |
| self.assertEqual(first.args, second.args) |
| else: |
| self.fail("expected os.tmpfile() to raise OSError") |
| return |
| else: |
| # open() worked, therefore, tmpfile() should work. Close our |
| # dummy file and proceed with the test as normal. |
| fp.close() |
| os.remove(name) |
| |
| fp = os.tmpfile() |
| fp.write("foobar") |
| fp.seek(0,0) |
| s = fp.read() |
| fp.close() |
| self.assert_(s == "foobar") |
| |
| def test_tmpnam(self): |
| import sys |
| if not hasattr(os, "tmpnam"): |
| return |
| warnings.filterwarnings("ignore", "tmpnam", RuntimeWarning, |
| r"test_os$") |
| name = os.tmpnam() |
| if sys.platform in ("win32",): |
| # The Windows tmpnam() seems useless. From the MS docs: |
| # |
| # The character string that tmpnam creates consists of |
| # the path prefix, defined by the entry P_tmpdir in the |
| # file STDIO.H, followed by a sequence consisting of the |
| # digit characters '0' through '9'; the numerical value |
| # of this string is in the range 1 - 65,535. Changing the |
| # definitions of L_tmpnam or P_tmpdir in STDIO.H does not |
| # change the operation of tmpnam. |
| # |
| # The really bizarre part is that, at least under MSVC6, |
| # P_tmpdir is "\\". That is, the path returned refers to |
| # the root of the current drive. That's a terrible place to |
| # put temp files, and, depending on privileges, the user |
| # may not even be able to open a file in the root directory. |
| self.failIf(os.path.exists(name), |
| "file already exists for temporary file") |
| else: |
| self.check_tempfile(name) |
| |
| # Test attributes on return values from os.*stat* family. |
| class StatAttributeTests(unittest.TestCase): |
| def setUp(self): |
| os.mkdir(test_support.TESTFN) |
| self.fname = os.path.join(test_support.TESTFN, "f1") |
| f = open(self.fname, 'wb') |
| f.write(b"ABC") |
| f.close() |
| |
| def tearDown(self): |
| os.unlink(self.fname) |
| os.rmdir(test_support.TESTFN) |
| |
| def test_stat_attributes(self): |
| if not hasattr(os, "stat"): |
| return |
| |
| import stat |
| result = os.stat(self.fname) |
| |
| # Make sure direct access works |
| self.assertEquals(result[stat.ST_SIZE], 3) |
| self.assertEquals(result.st_size, 3) |
| |
| import sys |
| |
| # Make sure all the attributes are there |
| members = dir(result) |
| for name in dir(stat): |
| if name[:3] == 'ST_': |
| attr = name.lower() |
| if name.endswith("TIME"): |
| def trunc(x): return int(x) |
| else: |
| def trunc(x): return x |
| self.assertEquals(trunc(getattr(result, attr)), |
| result[getattr(stat, name)]) |
| self.assert_(attr in members) |
| |
| try: |
| result[200] |
| self.fail("No exception thrown") |
| except IndexError: |
| pass |
| |
| # Make sure that assignment fails |
| try: |
| result.st_mode = 1 |
| self.fail("No exception thrown") |
| except AttributeError: |
| pass |
| |
| try: |
| result.st_rdev = 1 |
| self.fail("No exception thrown") |
| except (AttributeError, TypeError): |
| pass |
| |
| try: |
| result.parrot = 1 |
| self.fail("No exception thrown") |
| except AttributeError: |
| pass |
| |
| # Use the stat_result constructor with a too-short tuple. |
| try: |
| result2 = os.stat_result((10,)) |
| self.fail("No exception thrown") |
| except TypeError: |
| pass |
| |
| # Use the constructr with a too-long tuple. |
| try: |
| result2 = os.stat_result((0,1,2,3,4,5,6,7,8,9,10,11,12,13,14)) |
| except TypeError: |
| pass |
| |
| |
| def test_statvfs_attributes(self): |
| if not hasattr(os, "statvfs"): |
| return |
| |
| try: |
| result = os.statvfs(self.fname) |
| except OSError as e: |
| # On AtheOS, glibc always returns ENOSYS |
| import errno |
| if e.errno == errno.ENOSYS: |
| return |
| |
| # Make sure direct access works |
| self.assertEquals(result.f_bfree, result[3]) |
| |
| # Make sure all the attributes are there. |
| members = ('bsize', 'frsize', 'blocks', 'bfree', 'bavail', 'files', |
| 'ffree', 'favail', 'flag', 'namemax') |
| for value, member in enumerate(members): |
| self.assertEquals(getattr(result, 'f_' + member), result[value]) |
| |
| # Make sure that assignment really fails |
| try: |
| result.f_bfree = 1 |
| self.fail("No exception thrown") |
| except AttributeError: |
| pass |
| |
| try: |
| result.parrot = 1 |
| self.fail("No exception thrown") |
| except AttributeError: |
| pass |
| |
| # Use the constructor with a too-short tuple. |
| try: |
| result2 = os.statvfs_result((10,)) |
| self.fail("No exception thrown") |
| except TypeError: |
| pass |
| |
| # Use the constructr with a too-long tuple. |
| try: |
| result2 = os.statvfs_result((0,1,2,3,4,5,6,7,8,9,10,11,12,13,14)) |
| except TypeError: |
| pass |
| |
| def test_utime_dir(self): |
| delta = 1000000 |
| st = os.stat(test_support.TESTFN) |
| # round to int, because some systems may support sub-second |
| # time stamps in stat, but not in utime. |
| os.utime(test_support.TESTFN, (st.st_atime, int(st.st_mtime-delta))) |
| st2 = os.stat(test_support.TESTFN) |
| self.assertEquals(st2.st_mtime, int(st.st_mtime-delta)) |
| |
| # Restrict test to Win32, since there is no guarantee other |
| # systems support centiseconds |
| if sys.platform == 'win32': |
| def get_file_system(path): |
| import os |
| root = os.path.splitdrive(os.path.realpath("."))[0] + '\\' |
| import ctypes |
| kernel32 = ctypes.windll.kernel32 |
| buf = ctypes.create_string_buffer("", 100) |
| if kernel32.GetVolumeInformationA(root, None, 0, None, None, None, buf, len(buf)): |
| return buf.value |
| |
| if get_file_system(test_support.TESTFN) == "NTFS": |
| def test_1565150(self): |
| t1 = 1159195039.25 |
| os.utime(self.fname, (t1, t1)) |
| self.assertEquals(os.stat(self.fname).st_mtime, t1) |
| |
| def test_1686475(self): |
| # Verify that an open file can be stat'ed |
| try: |
| os.stat(r"c:\pagefile.sys") |
| except WindowsError as e: |
| if e == 2: # file does not exist; cannot run test |
| return |
| self.fail("Could not stat pagefile.sys") |
| |
| from test import mapping_tests |
| |
| class EnvironTests(mapping_tests.BasicTestMappingProtocol): |
| """check that os.environ object conform to mapping protocol""" |
| type2test = None |
| |
| def setUp(self): |
| self.__save = dict(os.environ) |
| for key, value in self._reference().items(): |
| os.environ[key] = value |
| |
| def tearDown(self): |
| os.environ.clear() |
| os.environ.update(self.__save) |
| |
| def _reference(self): |
| return {"KEY1":"VALUE1", "KEY2":"VALUE2", "KEY3":"VALUE3"} |
| |
| def _empty_mapping(self): |
| os.environ.clear() |
| return os.environ |
| |
| # Bug 1110478 |
| def test_update2(self): |
| os.environ.clear() |
| if os.path.exists("/bin/sh"): |
| os.environ.update(HELLO="World") |
| value = os.popen("/bin/sh -c 'echo $HELLO'").read().strip() |
| self.assertEquals(value, "World") |
| |
| def test_os_popen_iter(self): |
| if os.path.exists("/bin/sh"): |
| popen = os.popen("/bin/sh -c 'echo \"line1\nline2\nline3\"'") |
| it = iter(popen) |
| self.assertEquals(next(it), "line1\n") |
| self.assertEquals(next(it), "line2\n") |
| self.assertEquals(next(it), "line3\n") |
| self.assertRaises(StopIteration, next, it) |
| |
| # Verify environ keys and values from the OS are of the |
| # correct str type. |
| def test_keyvalue_types(self): |
| for key, val in os.environ.items(): |
| self.assertEquals(type(key), str) |
| self.assertEquals(type(val), str) |
| |
| def test_items(self): |
| for key, value in self._reference().items(): |
| self.assertEqual(os.environ.get(key), value) |
| |
| class WalkTests(unittest.TestCase): |
| """Tests for os.walk().""" |
| |
| def test_traversal(self): |
| import os |
| from os.path import join |
| |
| # Build: |
| # TESTFN/ |
| # TEST1/ a file kid and two directory kids |
| # tmp1 |
| # SUB1/ a file kid and a directory kid |
| # tmp2 |
| # SUB11/ no kids |
| # SUB2/ a file kid and a dirsymlink kid |
| # tmp3 |
| # link/ a symlink to TESTFN.2 |
| # TEST2/ |
| # tmp4 a lone file |
| walk_path = join(test_support.TESTFN, "TEST1") |
| sub1_path = join(walk_path, "SUB1") |
| sub11_path = join(sub1_path, "SUB11") |
| sub2_path = join(walk_path, "SUB2") |
| tmp1_path = join(walk_path, "tmp1") |
| tmp2_path = join(sub1_path, "tmp2") |
| tmp3_path = join(sub2_path, "tmp3") |
| link_path = join(sub2_path, "link") |
| t2_path = join(test_support.TESTFN, "TEST2") |
| tmp4_path = join(test_support.TESTFN, "TEST2", "tmp4") |
| |
| # Create stuff. |
| os.makedirs(sub11_path) |
| os.makedirs(sub2_path) |
| os.makedirs(t2_path) |
| for path in tmp1_path, tmp2_path, tmp3_path, tmp4_path: |
| f = open(path, "w") |
| f.write("I'm " + path + " and proud of it. Blame test_os.\n") |
| f.close() |
| if hasattr(os, "symlink"): |
| os.symlink(os.path.abspath(t2_path), link_path) |
| sub2_tree = (sub2_path, ["link"], ["tmp3"]) |
| else: |
| sub2_tree = (sub2_path, [], ["tmp3"]) |
| |
| # Walk top-down. |
| all = list(os.walk(walk_path)) |
| self.assertEqual(len(all), 4) |
| # We can't know which order SUB1 and SUB2 will appear in. |
| # Not flipped: TESTFN, SUB1, SUB11, SUB2 |
| # flipped: TESTFN, SUB2, SUB1, SUB11 |
| flipped = all[0][1][0] != "SUB1" |
| all[0][1].sort() |
| self.assertEqual(all[0], (walk_path, ["SUB1", "SUB2"], ["tmp1"])) |
| self.assertEqual(all[1 + flipped], (sub1_path, ["SUB11"], ["tmp2"])) |
| self.assertEqual(all[2 + flipped], (sub11_path, [], [])) |
| self.assertEqual(all[3 - 2 * flipped], sub2_tree) |
| |
| # Prune the search. |
| all = [] |
| for root, dirs, files in os.walk(walk_path): |
| all.append((root, dirs, files)) |
| # Don't descend into SUB1. |
| if 'SUB1' in dirs: |
| # Note that this also mutates the dirs we appended to all! |
| dirs.remove('SUB1') |
| self.assertEqual(len(all), 2) |
| self.assertEqual(all[0], (walk_path, ["SUB2"], ["tmp1"])) |
| self.assertEqual(all[1], sub2_tree) |
| |
| # Walk bottom-up. |
| all = list(os.walk(walk_path, topdown=False)) |
| self.assertEqual(len(all), 4) |
| # We can't know which order SUB1 and SUB2 will appear in. |
| # Not flipped: SUB11, SUB1, SUB2, TESTFN |
| # flipped: SUB2, SUB11, SUB1, TESTFN |
| flipped = all[3][1][0] != "SUB1" |
| all[3][1].sort() |
| self.assertEqual(all[3], (walk_path, ["SUB1", "SUB2"], ["tmp1"])) |
| self.assertEqual(all[flipped], (sub11_path, [], [])) |
| self.assertEqual(all[flipped + 1], (sub1_path, ["SUB11"], ["tmp2"])) |
| self.assertEqual(all[2 - 2 * flipped], sub2_tree) |
| |
| if hasattr(os, "symlink"): |
| # Walk, following symlinks. |
| for root, dirs, files in os.walk(walk_path, followlinks=True): |
| if root == link_path: |
| self.assertEqual(dirs, []) |
| self.assertEqual(files, ["tmp4"]) |
| break |
| else: |
| self.fail("Didn't follow symlink with followlinks=True") |
| |
| def tearDown(self): |
| # Tear everything down. This is a decent use for bottom-up on |
| # Windows, which doesn't have a recursive delete command. The |
| # (not so) subtlety is that rmdir will fail unless the dir's |
| # kids are removed first, so bottom up is essential. |
| for root, dirs, files in os.walk(test_support.TESTFN, topdown=False): |
| for name in files: |
| os.remove(os.path.join(root, name)) |
| for name in dirs: |
| dirname = os.path.join(root, name) |
| if not os.path.islink(dirname): |
| os.rmdir(dirname) |
| else: |
| os.remove(dirname) |
| os.rmdir(test_support.TESTFN) |
| |
| class MakedirTests(unittest.TestCase): |
| def setUp(self): |
| os.mkdir(test_support.TESTFN) |
| |
| def test_makedir(self): |
| base = test_support.TESTFN |
| path = os.path.join(base, 'dir1', 'dir2', 'dir3') |
| os.makedirs(path) # Should work |
| path = os.path.join(base, 'dir1', 'dir2', 'dir3', 'dir4') |
| os.makedirs(path) |
| |
| # Try paths with a '.' in them |
| self.failUnlessRaises(OSError, os.makedirs, os.curdir) |
| path = os.path.join(base, 'dir1', 'dir2', 'dir3', 'dir4', 'dir5', os.curdir) |
| os.makedirs(path) |
| path = os.path.join(base, 'dir1', os.curdir, 'dir2', 'dir3', 'dir4', |
| 'dir5', 'dir6') |
| os.makedirs(path) |
| |
| def tearDown(self): |
| path = os.path.join(test_support.TESTFN, 'dir1', 'dir2', 'dir3', |
| 'dir4', 'dir5', 'dir6') |
| # If the tests failed, the bottom-most directory ('../dir6') |
| # may not have been created, so we look for the outermost directory |
| # that exists. |
| while not os.path.exists(path) and path != test_support.TESTFN: |
| path = os.path.dirname(path) |
| |
| os.removedirs(path) |
| |
| class DevNullTests(unittest.TestCase): |
| def test_devnull(self): |
| f = open(os.devnull, 'w') |
| f.write('hello') |
| f.close() |
| f = open(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) |
| except NotImplementedError: |
| pass |
| |
| class ExecTests(unittest.TestCase): |
| def test_execvpe_with_bad_program(self): |
| self.assertRaises(OSError, os.execvpe, 'no such app-', ['no such app-'], None) |
| |
| def test_execvpe_with_bad_arglist(self): |
| self.assertRaises(ValueError, os.execvpe, 'notepad', [], None) |
| |
| 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) |
| |
| if sys.platform != 'win32': |
| class Win32ErrorTests(unittest.TestCase): |
| pass |
| |
| def test_main(): |
| test_support.run_unittest( |
| FileTests, |
| StatAttributeTests, |
| EnvironTests, |
| WalkTests, |
| MakedirTests, |
| DevNullTests, |
| URandomTests, |
| ExecTests, |
| Win32ErrorTests |
| ) |
| |
| if __name__ == "__main__": |
| test_main() |