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#!/usr/bin/env python
#
# This file is part of pySerial - Cross platform serial port support for Python
# (C) 2016 Chris Liechti <cliechti@gmx.net>
#
# SPDX-License-Identifier: BSD-3-Clause
"""
Test PTY related functionality.
"""
import os
import sys
try:
import pty
except ImportError:
pty = None
import unittest
import serial
DATA = b'Hello\n'
@unittest.skipIf(pty is None, "pty module not supported on platform")
class Test_Pty_Serial_Open(unittest.TestCase):
"""Test PTY serial open"""
def setUp(self):
# Open PTY
self.master, self.slave = pty.openpty()
def test_pty_serial_open_slave(self):
with serial.Serial(os.ttyname(self.slave), timeout=1) as slave:
pass # OK
def test_pty_serial_write(self):
with serial.Serial(os.ttyname(self.slave), timeout=1) as slave:
with os.fdopen(self.master, "wb") as fd:
fd.write(DATA)
fd.flush()
out = slave.read(len(DATA))
self.assertEqual(DATA, out)
def test_pty_serial_read(self):
with serial.Serial(os.ttyname(self.slave), timeout=1) as slave:
with os.fdopen(self.master, "rb") as fd:
slave.write(DATA)
slave.flush()
out = fd.read(len(DATA))
self.assertEqual(DATA, out)
if __name__ == '__main__':
sys.stdout.write(__doc__)
# When this module is executed from the command-line, it runs all its tests
unittest.main()
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