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Diffstat (limited to 'test/test_high_load.py')
-rw-r--r-- | test/test_high_load.py | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/test/test_high_load.py b/test/test_high_load.py new file mode 100644 index 0000000..b0bd773 --- /dev/null +++ b/test/test_high_load.py @@ -0,0 +1,76 @@ +#!/usr/bin/env python +# +# This file is part of pySerial - Cross platform serial port support for Python +# (C) 2001-2015 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)2002-2003 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 + +# on which port should the tests be performed: +PORT = 'loop://' +BAUDRATE = 115200 +#~ BAUDRATE=9600 + +if sys.version_info >= (3, 0): + bytes_0to255 = bytes(range(256)) +else: + bytes_0to255 = ''.join([chr(x) for x in range(256)]) + + +class TestHighLoad(unittest.TestCase): + """Test sending and receiving large amount of data""" + + N = 16 + #~ N = 1 + + def setUp(self): + self.s = serial.serial_for_url(PORT, BAUDRATE, timeout=10) + + def tearDown(self): + self.s.close() + + def test0_WriteReadLoopback(self): + """Send big strings, write/read order.""" + for i in range(self.N): + q = bytes_0to255 + self.s.write(q) + self.assertEqual(self.s.read(len(q)), q) # expected same which was written before + self.assertEqual(self.s.inWaiting(), 0) # expected empty buffer after all sent chars are read + + def test1_WriteWriteReadLoopback(self): + """Send big strings, multiple write one read.""" + q = bytes_0to255 + for i in range(self.N): + self.s.write(q) + read = self.s.read(len(q) * self.N) + self.assertEqual(read, q * self.N, "expected what was written before. got {} bytes, expected {}".format(len(read), self.N * len(q))) + self.assertEqual(self.s.inWaiting(), 0) # "expected empty buffer after all sent chars are read") + + +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() |