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import errno
import os
import socket
import pytest
from jeepney import FileDescriptor, NoFDError
def assert_not_fd(fd: int):
"""Check that the given number is not open as a file descriptor"""
with pytest.raises(OSError) as exc_info:
os.stat(fd)
assert exc_info.value.errno == errno.EBADF
def test_close(tmp_path):
fd = os.open(tmp_path / 'a', os.O_CREAT | os.O_RDWR)
with FileDescriptor(fd) as wfd:
assert wfd.fileno() == fd
# Leaving the with block is equivalent to calling .close()
assert 'closed' in repr(wfd)
with pytest.raises(NoFDError):
wfd.fileno()
assert_not_fd(fd)
def test_to_raw_fd(tmp_path):
fd = os.open(tmp_path / 'a', os.O_CREAT)
wfd = FileDescriptor(fd)
assert wfd.fileno() == fd
assert wfd.to_raw_fd() == fd
try:
assert 'converted' in repr(wfd)
with pytest.raises(NoFDError):
wfd.fileno()
finally:
os.close(fd)
def test_to_file(tmp_path):
fd = os.open(tmp_path / 'a', os.O_CREAT | os.O_RDWR)
wfd = FileDescriptor(fd)
with wfd.to_file('w') as f:
assert f.write('abc')
assert 'converted' in repr(wfd)
with pytest.raises(NoFDError):
wfd.fileno()
assert_not_fd(fd) # Check FD was closed by file object
assert (tmp_path / 'a').read_text() == 'abc'
def test_to_socket():
s1, s2 = socket.socketpair()
try:
s1.sendall(b'abcd')
sfd = s2.detach()
wfd = FileDescriptor(sfd)
with wfd.to_socket() as sock:
b = sock.recv(16)
assert b and b'abcd'.startswith(b)
assert 'converted' in repr(wfd)
with pytest.raises(NoFDError):
wfd.fileno()
assert_not_fd(sfd) # Check FD was closed by socket object
finally:
s1.close()