/usr/lib/python3.7/test/test_openpty.py is in libpython3.7-testsuite 3.7.0~b3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | # Test to see if openpty works. (But don't worry if it isn't available.)
import os, unittest
if not hasattr(os, "openpty"):
raise unittest.SkipTest("os.openpty() not available.")
class OpenptyTest(unittest.TestCase):
def test(self):
master, slave = os.openpty()
self.addCleanup(os.close, master)
self.addCleanup(os.close, slave)
if not os.isatty(slave):
self.fail("Slave-end of pty is not a terminal.")
os.write(slave, b'Ping!')
self.assertEqual(os.read(master, 1024), b'Ping!')
if __name__ == '__main__':
unittest.main()
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