Files
RustPython/tests/snippets/stdlib_os.py
2019-10-14 17:55:59 +02:00

331 lines
9.3 KiB
Python

import os
import time
import stat
import sys
from testutils import assert_raises
fd = os.open('README.md', os.O_RDONLY)
assert fd > 0
os.close(fd)
assert_raises(OSError, lambda: os.read(fd, 10))
assert_raises(FileNotFoundError, lambda: os.open('DOES_NOT_EXIST', os.O_RDONLY))
assert_raises(FileNotFoundError, lambda: os.open('DOES_NOT_EXIST', os.O_WRONLY))
assert_raises(FileNotFoundError, lambda: os.rename('DOES_NOT_EXIST', 'DOES_NOT_EXIST 2'))
try:
os.open('DOES_NOT_EXIST', 0)
except OSError as err:
assert err.errno == 2
assert os.O_RDONLY == 0
assert os.O_WRONLY == 1
assert os.O_RDWR == 2
ENV_KEY = "TEST_ENV_VAR"
ENV_VALUE = "value"
assert os.getenv(ENV_KEY) == None
assert ENV_KEY not in os.environ
assert os.getenv(ENV_KEY, 5) == 5
os.environ[ENV_KEY] = ENV_VALUE
assert ENV_KEY in os.environ
assert os.getenv(ENV_KEY) == ENV_VALUE
del os.environ[ENV_KEY]
assert ENV_KEY not in os.environ
assert os.getenv(ENV_KEY) == None
if os.name == "posix":
os.putenv(ENV_KEY, ENV_VALUE)
os.unsetenv(ENV_KEY)
assert os.getenv(ENV_KEY) == None
assert os.curdir == "."
assert os.pardir == ".."
assert os.extsep == "."
if os.name == "nt":
assert os.sep == "\\"
assert os.linesep == "\r\n"
assert os.altsep == "/"
assert os.pathsep == ";"
else:
assert os.sep == "/"
assert os.linesep == "\n"
assert os.altsep == None
assert os.pathsep == ":"
assert os.fspath("Testing") == "Testing"
assert os.fspath(b"Testing") == b"Testing"
assert_raises(TypeError, lambda: os.fspath([1,2,3]))
class TestWithTempDir():
def __enter__(self):
if os.name == "nt":
base_folder = os.environ["TEMP"]
else:
base_folder = "/tmp"
name = os.path.join(base_folder, "rustpython_test_os_" + str(int(time.time())))
while os.path.isdir(name):
name = name + "_"
os.mkdir(name)
self.name = name
return name
def __exit__(self, exc_type, exc_val, exc_tb):
pass
class TestWithTempCurrentDir():
def __enter__(self):
self.prev_cwd = os.getcwd()
def __exit__(self, exc_type, exc_val, exc_tb):
os.chdir(self.prev_cwd)
FILE_NAME = "test1"
FILE_NAME2 = "test2"
FILE_NAME3 = "test3"
SYMLINK_FILE = "symlink"
SYMLINK_FOLDER = "symlink1"
FOLDER = "dir1"
CONTENT = b"testing"
CONTENT2 = b"rustpython"
CONTENT3 = b"BOYA"
with TestWithTempDir() as tmpdir:
fname = os.path.join(tmpdir, FILE_NAME)
fd = os.open(fname, os.O_WRONLY | os.O_CREAT | os.O_EXCL)
assert os.write(fd, CONTENT2) == len(CONTENT2)
os.close(fd)
fd = os.open(fname, os.O_WRONLY | os.O_APPEND)
assert os.write(fd, CONTENT3) == len(CONTENT3)
os.close(fd)
assert_raises(FileExistsError, lambda: os.open(fname, os.O_WRONLY | os.O_CREAT | os.O_EXCL))
fd = os.open(fname, os.O_RDONLY)
assert os.read(fd, len(CONTENT2)) == CONTENT2
assert os.read(fd, len(CONTENT3)) == CONTENT3
os.close(fd)
fname3 = os.path.join(tmpdir, FILE_NAME3)
os.rename(fname, fname3)
assert os.path.exists(fname) == False
assert os.path.exists(fname3) == True
fd = os.open(fname3, 0)
assert os.read(fd, len(CONTENT2) + len(CONTENT3)) == CONTENT2 + CONTENT3
os.close(fd)
os.rename(fname3, fname)
assert os.path.exists(fname3) == False
assert os.path.exists(fname) == True
# wait a little bit to ensure that the file times aren't the same
time.sleep(0.1)
fname2 = os.path.join(tmpdir, FILE_NAME2)
with open(fname2, "wb"):
pass
folder = os.path.join(tmpdir, FOLDER)
os.mkdir(folder)
symlink_file = os.path.join(tmpdir, SYMLINK_FILE)
os.symlink(fname, symlink_file)
symlink_folder = os.path.join(tmpdir, SYMLINK_FOLDER)
os.symlink(folder, symlink_folder)
names = set()
paths = set()
dirs = set()
dirs_no_symlink = set()
files = set()
files_no_symlink = set()
symlinks = set()
for dir_entry in os.scandir(tmpdir):
names.add(dir_entry.name)
paths.add(dir_entry.path)
if dir_entry.is_dir():
assert stat.S_ISDIR(dir_entry.stat().st_mode) == True
dirs.add(dir_entry.name)
if dir_entry.is_dir(follow_symlinks=False):
assert stat.S_ISDIR(dir_entry.stat().st_mode) == True
dirs_no_symlink.add(dir_entry.name)
if dir_entry.is_file():
files.add(dir_entry.name)
assert stat.S_ISREG(dir_entry.stat().st_mode) == True
if dir_entry.is_file(follow_symlinks=False):
files_no_symlink.add(dir_entry.name)
assert stat.S_ISREG(dir_entry.stat().st_mode) == True
if dir_entry.is_symlink():
symlinks.add(dir_entry.name)
assert names == set([FILE_NAME, FILE_NAME2, FOLDER, SYMLINK_FILE, SYMLINK_FOLDER])
assert paths == set([fname, fname2, folder, symlink_file, symlink_folder])
assert dirs == set([FOLDER, SYMLINK_FOLDER])
assert dirs_no_symlink == set([FOLDER])
assert files == set([FILE_NAME, FILE_NAME2, SYMLINK_FILE])
assert files_no_symlink == set([FILE_NAME, FILE_NAME2])
assert symlinks == set([SYMLINK_FILE, SYMLINK_FOLDER])
# Stat
stat_res = os.stat(fname)
print(stat_res.st_mode)
assert stat.S_ISREG(stat_res.st_mode) == True
print(stat_res.st_ino)
print(stat_res.st_dev)
print(stat_res.st_nlink)
print(stat_res.st_uid)
print(stat_res.st_gid)
print(stat_res.st_size)
assert stat_res.st_size == len(CONTENT2) + len(CONTENT3)
print(stat_res.st_atime)
print(stat_res.st_ctime)
print(stat_res.st_mtime)
# test that it all of these times are greater than the 10 May 2019, when this test was written
assert stat_res.st_atime > 1557500000
assert stat_res.st_ctime > 1557500000
assert stat_res.st_mtime > 1557500000
stat_file2 = os.stat(fname2)
print(stat_file2.st_ctime)
assert stat_file2.st_ctime > stat_res.st_ctime
# wait a little bit to ensures that the access/modify time will change
time.sleep(0.1)
old_atime = stat_res.st_atime
old_mtime = stat_res.st_mtime
fd = os.open(fname, os.O_RDWR)
os.write(fd, CONTENT)
os.fsync(fd)
# wait a little bit to ensures that the access/modify time is different
time.sleep(0.1)
os.read(fd, 1)
os.fsync(fd)
os.close(fd)
# retrieve update file stats
stat_res = os.stat(fname)
print(stat_res.st_atime)
print(stat_res.st_ctime)
print(stat_res.st_mtime)
if os.name != "nt":
# access time on windows has a resolution ranging from 1 hour to 1 day
# https://docs.microsoft.com/en-gb/windows/desktop/api/minwinbase/ns-minwinbase-filetime
assert stat_res.st_atime > old_atime, "Access time should be update"
assert stat_res.st_atime > stat_res.st_mtime
assert stat_res.st_mtime > old_mtime, "Modified time should be update"
# stat default is follow_symlink=True
os.stat(fname).st_ino == os.stat(symlink_file).st_ino
os.stat(fname).st_mode == os.stat(symlink_file).st_mode
os.stat(fname, follow_symlinks=False).st_ino == os.stat(symlink_file, follow_symlinks=False).st_ino
os.stat(fname, follow_symlinks=False).st_mode == os.stat(symlink_file, follow_symlinks=False).st_mode
# os.chmod
if os.name != "nt":
os.chmod(fname, 0o666)
assert oct(os.stat(fname).st_mode) == '0o100666'
# os.path
assert os.path.exists(fname) == True
assert os.path.exists("NO_SUCH_FILE") == False
assert os.path.isfile(fname) == True
assert os.path.isdir(folder) == True
assert os.path.isfile(folder) == False
assert os.path.isdir(fname) == False
assert os.path.basename(fname) == FILE_NAME
assert os.path.dirname(fname) == tmpdir
with TestWithTempCurrentDir():
os.chdir(tmpdir)
assert os.getcwd() == os.path.realpath(tmpdir)
os.path.exists(FILE_NAME)
# supports
assert isinstance(os.supports_fd, set)
assert isinstance(os.supports_dir_fd, set)
assert isinstance(os.supports_follow_symlinks, set)
# get pid
assert isinstance(os.getpid(), int)
# unix
if "win" not in sys.platform:
assert isinstance(os.getegid(), int)
assert isinstance(os.getgid(), int)
assert isinstance(os.getsid(os.getpid()), int)
assert isinstance(os.getuid(), int)
assert isinstance(os.geteuid(), int)
assert isinstance(os.getppid(), int)
assert isinstance(os.getpgid(os.getpid()), int)
if os.getuid() != 0:
assert_raises(PermissionError, lambda: os.setgid(42))
assert_raises(PermissionError, lambda: os.setegid(42))
assert_raises(PermissionError, lambda: os.setpgid(os.getpid(), 42))
assert_raises(PermissionError, lambda: os.setuid(42))
assert_raises(PermissionError, lambda: os.seteuid(42))
# pty
a, b = os.openpty()
assert isinstance(a, int)
assert isinstance(b, int)
assert isinstance(os.ttyname(b), str)
assert_raises(OSError, lambda: os.ttyname(9999))
os.close(b)
os.close(a)
with TestWithTempDir() as tmpdir:
for i in range(0, 4):
file_name = os.path.join(tmpdir, 'file' + str(i))
with open(file_name, 'w') as f:
f.write('test')
expected_files = ['file0', 'file1', 'file2', 'file3']
dir_iter = os.scandir(tmpdir)
collected_files = [dir_entry.name for dir_entry in dir_iter]
assert set(collected_files) == set(expected_files)
with assert_raises(StopIteration):
next(dir_iter)
dir_iter.close()
with TestWithTempCurrentDir():
os.chdir(tmpdir)
with os.scandir() as dir_iter:
collected_files = [dir_entry.name for dir_entry in dir_iter]
assert set(collected_files) == set(expected_files)
# system()
if "win" not in sys.platform:
assert os.system('ls') == 0
assert os.system('{') != 0
for arg in [None, 1, 1.0, TabError]:
try:
os.system(arg)
except TypeError:
pass
else:
raise AssertionError(f'os.system failed to raise TypeError with arg {arg}')