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gh-132742: Fix newly added tcflush() tests on Android#133070

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Merged
serhiy-storchaka merged 3 commits intopython:mainfromserhiy-storchaka:test-ioctl5
Apr 28, 2025
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21 changes: 13 additions & 8 deletionsLib/test/test_ioctl.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -4,7 +4,7 @@
import sys
import threading
import unittest
from test.support importget_attribute
from test importsupport
from test.support import threading_helper
from test.support.import_helper import import_module
fcntl = import_module('fcntl')
Expand All@@ -13,7 +13,7 @@
class IoctlTestsTty(unittest.TestCase):
@classmethod
def setUpClass(cls):
TIOCGPGRP = get_attribute(termios, 'TIOCGPGRP')
TIOCGPGRP =support.get_attribute(termios, 'TIOCGPGRP')
try:
tty = open("/dev/tty", "rb")
except OSError:
Expand DownExpand Up@@ -143,7 +143,9 @@ def setUp(self):
def test_ioctl_clear_input_or_output(self):
wfd = self.slave_fd
rfd = self.master_fd
inbuf = sys.platform == 'linux'
# The data is buffered in the input buffer on Linux, and in
# the output buffer on other platforms.
inbuf = sys.platform in ('linux', 'android')

os.write(wfd, b'abcdef')
self.assertEqual(os.read(rfd, 2), b'ab')
Expand All@@ -163,7 +165,8 @@ def test_ioctl_clear_input_or_output(self):
os.write(wfd, b'ABCDEF')
self.assertEqual(os.read(rfd, 1024), b'ABCDEF')

@unittest.skipUnless(sys.platform == 'linux', 'only works on Linux')
@support.skip_android_selinux('tcflow')
@unittest.skipUnless(sys.platform in ('linux', 'android'), 'only works on Linux')
@unittest.skipUnless(hasattr(termios, 'TCXONC'), 'requires termios.TCXONC')
def test_ioctl_suspend_and_resume_output(self):
wfd = self.slave_fd
Expand All@@ -173,20 +176,22 @@ def test_ioctl_suspend_and_resume_output(self):

def writer():
os.write(wfd, b'abc')
write_suspended.wait()
self.assertTrue(write_suspended.wait(support.SHORT_TIMEOUT))
os.write(wfd, b'def')
write_finished.set()

with threading_helper.start_threads([threading.Thread(target=writer)]):
self.assertEqual(os.read(rfd, 3), b'abc')
try:
fcntl.ioctl(wfd, termios.TCXONC, termios.TCOOFF)
write_suspended.set()
try:
fcntl.ioctl(wfd, termios.TCXONC, termios.TCOOFF)
finally:
write_suspended.set()
self.assertFalse(write_finished.wait(0.5),
'output was not suspended')
finally:
fcntl.ioctl(wfd, termios.TCXONC, termios.TCOON)
self.assertTrue(write_finished.wait(0.5),
self.assertTrue(write_finished.wait(support.SHORT_TIMEOUT),
'output was not resumed')
self.assertEqual(os.read(rfd, 1024), b'def')

Expand Down
17 changes: 11 additions & 6 deletionsLib/test/test_termios.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -152,7 +152,9 @@ def test_tcflush_errors(self):
def test_tcflush_clear_input_or_output(self):
wfd = self.fd
rfd = self.master_fd
inbuf = sys.platform == 'linux'
# The data is buffered in the input buffer on Linux, and in
# the output buffer on other platforms.
inbuf = sys.platform in ('linux', 'android')

os.write(wfd, b'abcdef')
self.assertEqual(os.read(rfd, 2), b'ab')
Expand DownExpand Up@@ -190,7 +192,8 @@ def test_tcflow_errors(self):
self.assertRaises(TypeError, termios.tcflow, object(), termios.TCOON)
self.assertRaises(TypeError, termios.tcflow, self.fd)

@unittest.skipUnless(sys.platform == 'linux', 'only works on Linux')
@support.skip_android_selinux('tcflow')
@unittest.skipUnless(sys.platform in ('linux', 'android'), 'only works on Linux')
def test_tcflow_suspend_and_resume_output(self):
wfd = self.fd
rfd = self.master_fd
Expand All@@ -199,20 +202,22 @@ def test_tcflow_suspend_and_resume_output(self):

def writer():
os.write(wfd, b'abc')
write_suspended.wait()
self.assertTrue(write_suspended.wait(support.SHORT_TIMEOUT))
os.write(wfd, b'def')
write_finished.set()

with threading_helper.start_threads([threading.Thread(target=writer)]):
self.assertEqual(os.read(rfd, 3), b'abc')
try:
termios.tcflow(wfd, termios.TCOOFF)
write_suspended.set()
try:
termios.tcflow(wfd, termios.TCOOFF)
finally:
write_suspended.set()
self.assertFalse(write_finished.wait(0.5),
'output was not suspended')
finally:
termios.tcflow(wfd, termios.TCOON)
self.assertTrue(write_finished.wait(0.5),
self.assertTrue(write_finished.wait(support.SHORT_TIMEOUT),
'output was not resumed')
self.assertEqual(os.read(rfd, 1024), b'def')

Expand Down
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