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gh-85984: Add POSIX pseudo-terminal functions. (GH-102413)

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Signed-off-by: Soumendra Ganguly <soumendraganguly@gmail.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Co-authored-by: Petr Viktorin <encukou@gmail.com>
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Soumendra Ganguly 2024-01-29 17:10:28 +01:00 • committed by GitHub
parent 0f54ee4c6c
commit e351ca3c20
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9 changed files with 468 additions and 11 deletions
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45
Lib/test/test_os.py
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@ -4536,13 +4536,46 @@ class FDInheritanceTests(unittest.TestCase):
self.assertEqual(os.dup2(fd, fd3, inheritable=False), fd3)
self.assertFalse(os.get_inheritable(fd3))
@unittest.skipUnless(hasattr(os, 'openpty'), "need os.openpty()")
@unittest.skipUnless(hasattr(os, 'openpty'), "need os.openpty()")
class PseudoterminalTests(unittest.TestCase):
def open_pty(self):
"""Open a pty fd-pair, and schedule cleanup for it"""
main_fd, second_fd = os.openpty()
self.addCleanup(os.close, main_fd)
self.addCleanup(os.close, second_fd)
return main_fd, second_fd
def test_openpty(self):
master_fd, slave_fd = os.openpty()
self.addCleanup(os.close, master_fd)
self.addCleanup(os.close, slave_fd)
self.assertEqual(os.get_inheritable(master_fd), False)
self.assertEqual(os.get_inheritable(slave_fd), False)
main_fd, second_fd = self.open_pty()
self.assertEqual(os.get_inheritable(main_fd), False)
self.assertEqual(os.get_inheritable(second_fd), False)
@unittest.skipUnless(hasattr(os, 'ptsname'), "need os.ptsname()")
@unittest.skipUnless(hasattr(os, 'O_RDWR'), "need os.O_RDWR")
@unittest.skipUnless(hasattr(os, 'O_NOCTTY'), "need os.O_NOCTTY")
def test_open_via_ptsname(self):
main_fd, second_fd = self.open_pty()
second_path = os.ptsname(main_fd)
reopened_second_fd = os.open(second_path, os.O_RDWR|os.O_NOCTTY)
self.addCleanup(os.close, reopened_second_fd)
os.write(reopened_second_fd, b'foo')
self.assertEqual(os.read(main_fd, 3), b'foo')
@unittest.skipUnless(hasattr(os, 'posix_openpt'), "need os.posix_openpt()")
@unittest.skipUnless(hasattr(os, 'grantpt'), "need os.grantpt()")
@unittest.skipUnless(hasattr(os, 'unlockpt'), "need os.unlockpt()")
@unittest.skipUnless(hasattr(os, 'ptsname'), "need os.ptsname()")
@unittest.skipUnless(hasattr(os, 'O_RDWR'), "need os.O_RDWR")
@unittest.skipUnless(hasattr(os, 'O_NOCTTY'), "need os.O_NOCTTY")
def test_posix_pty_functions(self):
mother_fd = os.posix_openpt(os.O_RDWR|os.O_NOCTTY)
self.addCleanup(os.close, mother_fd)
os.grantpt(mother_fd)
os.unlockpt(mother_fd)
son_path = os.ptsname(mother_fd)
son_fd = os.open(son_path, os.O_RDWR|os.O_NOCTTY)
self.addCleanup(os.close, son_fd)
self.assertEqual(os.ptsname(mother_fd), os.ttyname(son_fd))
@unittest.skipUnless(hasattr(os, 'spawnl'), "need os.openpty()")
def test_pipe_spawnl(self):