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#! /usr/bin/env python
#
# This file is part of pySerial - Cross platform serial port support for Python
# (C) 2010-2015 Chris Liechti <cliechti@gmx.net>
#
# SPDX-License-Identifier: BSD-3-Clause
"""\
Some tests for the serial module.
Part of pyserial (http://pyserial.sf.net) (C)2010 cliechti@gmx.net
Intended to be run on different platforms, to ensure portability of
the code.
For all these tests a simple hardware is required.
Loopback HW adapter:
Shortcut these pin pairs:
TX <-> RX
RTS <-> CTS
DTR <-> DSR
On a 9 pole DSUB these are the pins (2-3) (4-6) (7-8)
"""
import unittest
import sys
import serial
#~ print serial.VERSION
# on which port should the tests be performed:
PORT = 'loop://'
if sys.version_info >= (3, 0):
def data(string):
return bytes(string, 'latin1')
else:
def data(string):
return string
class Test_Readline(unittest.TestCase):
"""Test readline function"""
def setUp(self):
self.s = serial.serial_for_url(PORT, timeout=1)
def tearDown(self):
self.s.close()
def test_readline(self):
"""Test readline method"""
self.s.write(serial.to_bytes([0x31, 0x0a, 0x32, 0x0a, 0x33, 0x0a]))
self.assertEqual(self.s.readline(), serial.to_bytes([0x31, 0x0a]))
self.assertEqual(self.s.readline(), serial.to_bytes([0x32, 0x0a]))
self.assertEqual(self.s.readline(), serial.to_bytes([0x33, 0x0a]))
# this time we will get a timeout
self.assertEqual(self.s.readline(), serial.to_bytes([]))
def test_readlines(self):
"""Test readlines method"""
self.s.write(serial.to_bytes([0x31, 0x0a, 0x32, 0x0a, 0x33, 0x0a]))
self.assertEqual(
self.s.readlines(),
[serial.to_bytes([0x31, 0x0a]), serial.to_bytes([0x32, 0x0a]), serial.to_bytes([0x33, 0x0a])]
)
def test_xreadlines(self):
"""Test xreadlines method (skipped for io based systems)"""
if hasattr(self.s, 'xreadlines'):
self.s.write(serial.to_bytes([0x31, 0x0a, 0x32, 0x0a, 0x33, 0x0a]))
self.assertEqual(
list(self.s.xreadlines()),
[serial.to_bytes([0x31, 0x0a]), serial.to_bytes([0x32, 0x0a]), serial.to_bytes([0x33, 0x0a])]
)
def test_for_in(self):
"""Test for line in s"""
self.s.write(serial.to_bytes([0x31, 0x0a, 0x32, 0x0a, 0x33, 0x0a]))
lines = []
for line in self.s:
lines.append(line)
self.assertEqual(
lines,
[serial.to_bytes([0x31, 0x0a]), serial.to_bytes([0x32, 0x0a]), serial.to_bytes([0x33, 0x0a])]
)
def test_alternate_eol(self):
"""Test readline with alternative eol settings (skipped for io based systems)"""
if hasattr(self.s, 'xreadlines'): # test if it is our FileLike base class
self.s.write(serial.to_bytes("no\rno\nyes\r\n"))
self.assertEqual(
self.s.readline(eol=serial.to_bytes("\r\n")),
serial.to_bytes("no\rno\nyes\r\n"))
if __name__ == '__main__':
import sys
sys.stdout.write(__doc__)
if len(sys.argv) > 1:
PORT = sys.argv[1]
sys.stdout.write("Testing port: {!r}\n".format(PORT))
sys.argv[1:] = ['-v']
# When this module is executed from the command-line, it runs all its tests
unittest.main()