"Test posix functions" from test import support # Skip these tests if there is no posix module. posix = support.import_module('posix') import time import os import pwd import shutil import unittest import warnings warnings.filterwarnings('ignore', '.* potential security risk .*', RuntimeWarning) class PosixTester(unittest.TestCase): def setUp(self): # create empty file fp = open(support.TESTFN, 'w+') fp.close() def tearDown(self): support.unlink(support.TESTFN) def testNoArgFunctions(self): # test posix functions which take no arguments and have # no side-effects which we need to cleanup (e.g., fork, wait, abort) NO_ARG_FUNCTIONS = [ "ctermid", "getcwd", "getcwdb", "uname", "times", "getloadavg", "getegid", "geteuid", "getgid", "getgroups", "getpid", "getpgrp", "getppid", "getuid", ] for name in NO_ARG_FUNCTIONS: posix_func = getattr(posix, name, None) if posix_func is not None: posix_func() self.assertRaises(TypeError, posix_func, 1) def test_statvfs(self): if hasattr(posix, 'statvfs'): self.assertTrue(posix.statvfs(os.curdir)) def test_fstatvfs(self): if hasattr(posix, 'fstatvfs'): fp = open(support.TESTFN) try: self.assertTrue(posix.fstatvfs(fp.fileno())) finally: fp.close() def test_ftruncate(self): if hasattr(posix, 'ftruncate'): fp = open(support.TESTFN, 'w+') try: # we need to have some data to truncate fp.write('test') fp.flush() posix.ftruncate(fp.fileno(), 0) finally: fp.close() def test_dup(self): if hasattr(posix, 'dup'): fp = open(support.TESTFN) try: fd = posix.dup(fp.fileno()) self.assertTrue(isinstance(fd, int)) os.close(fd) finally: fp.close() def test_confstr(self): if hasattr(posix, 'confstr'): self.assertRaises(ValueError, posix.confstr, "CS_garbage") self.assertEqual(len(posix.confstr("CS_PATH")) > 0, True) def test_dup2(self): if hasattr(posix, 'dup2'): fp1 = open(support.TESTFN) fp2 = open(support.TESTFN) try: posix.dup2(fp1.fileno(), fp2.fileno()) finally: fp1.close() fp2.close() def test_osexlock(self): if hasattr(posix, "O_EXLOCK"): fd = os.open(support.TESTFN, os.O_WRONLY|os.O_EXLOCK|os.O_CREAT) self.assertRaises(OSError, os.open, support.TESTFN, os.O_WRONLY|os.O_EXLOCK|os.O_NONBLOCK) os.close(fd) if hasattr(posix, "O_SHLOCK"): fd = os.open(support.TESTFN, os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) self.assertRaises(OSError, os.open, support.TESTFN, os.O_WRONLY|os.O_EXLOCK|os.O_NONBLOCK) os.close(fd) def test_osshlock(self): if hasattr(posix, "O_SHLOCK"): fd1 = os.open(support.TESTFN, os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) fd2 = os.open(support.TESTFN, os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) os.close(fd2) os.close(fd1) if hasattr(posix, "O_EXLOCK"): fd = os.open(support.TESTFN, os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) self.assertRaises(OSError, os.open, support.TESTFN, os.O_RDONLY|os.O_EXLOCK|os.O_NONBLOCK) os.close(fd) def test_fstat(self): if hasattr(posix, 'fstat'): fp = open(support.TESTFN) try: self.assertTrue(posix.fstat(fp.fileno())) finally: fp.close() def test_stat(self): if hasattr(posix, 'stat'): self.assertTrue(posix.stat(support.TESTFN)) if hasattr(posix, 'chown'): def test_chown(self): # raise an OSError if the file does not exist os.unlink(support.TESTFN) self.assertRaises(OSError, posix.chown, support.TESTFN, -1, -1) # re-create the file open(support.TESTFN, 'w').close() if os.getuid() == 0: try: # Many linux distros have a nfsnobody user as MAX_UID-2 # that makes a good test case for signedness issues. # http://bugs.python.org/issue1747858 # This part of the test only runs when run as root. # Only scary people run their tests as root. ent = pwd.getpwnam('nfsnobody') posix.chown(support.TESTFN, ent.pw_uid, ent.pw_gid) except KeyError: pass else: # non-root cannot chown to root, raises OSError self.assertRaises(OSError, posix.chown, support.TESTFN, 0, 0) # test a successful chown call posix.chown(support.TESTFN, os.getuid(), os.getgid()) def test_chdir(self): if hasattr(posix, 'chdir'): posix.chdir(os.curdir) self.assertRaises(OSError, posix.chdir, support.TESTFN) def test_lsdir(self): if hasattr(posix, 'lsdir'): self.assertTrue(support.TESTFN in posix.lsdir(os.curdir)) def test_access(self): if hasattr(posix, 'access'): self.assertTrue(posix.access(support.TESTFN, os.R_OK)) def test_umask(self): if hasattr(posix, 'umask'): old_mask = posix.umask(0) self.assertTrue(isinstance(old_mask, int)) posix.umask(old_mask) def test_strerror(self): if hasattr(posix, 'strerror'): self.assertTrue(posix.strerror(0)) def test_pipe(self): if hasattr(posix, 'pipe'): reader, writer = posix.pipe() os.close(reader) os.close(writer) def test_utime(self): if hasattr(posix, 'utime'): now = time.time() posix.utime(support.TESTFN, None) self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, None)) self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, None)) self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, now)) posix.utime(support.TESTFN, (int(now), int(now))) posix.utime(support.TESTFN, (now, now)) def test_chflags(self): if hasattr(posix, 'chflags'): st = os.stat(support.TESTFN) if hasattr(st, 'st_flags'): posix.chflags(support.TESTFN, st.st_flags) def test_lchflags(self): if hasattr(posix, 'lchflags'): st = os.stat(support.TESTFN) if hasattr(st, 'st_flags'): posix.lchflags(support.TESTFN, st.st_flags) def test_environ(self): for k, v in posix.environ.items(): self.assertEqual(type(k), str) self.assertEqual(type(v), str) def test_getcwd_long_pathnames(self): if hasattr(posix, 'getcwd'): dirname = 'getcwd-test-directory-0123456789abcdef-01234567890abcdef' curdir = os.getcwd() base_path = os.path.abspath(support.TESTFN) + '.getcwd' try: os.mkdir(base_path) os.chdir(base_path) except: # Just returning nothing instead of the SkipTest exception, # because the test results in Error in that case. # Is that ok? # raise unittest.SkipTest("cannot create directory for testing") return def _create_and_do_getcwd(dirname, current_path_length = 0): try: os.mkdir(dirname) except: raise unittest.SkipTest("mkdir cannot create directory sufficiently deep for getcwd test") os.chdir(dirname) try: os.getcwd() if current_path_length < 1027: _create_and_do_getcwd(dirname, current_path_length + len(dirname) + 1) finally: os.chdir('..') os.rmdir(dirname) _create_and_do_getcwd(dirname) finally: support.rmtree(base_path) os.chdir(curdir) def test_main(): support.run_unittest(PosixTester) if __name__ == '__main__': test_main()