test_openpty.py
# 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()