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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Tests for L{twisted.internet.serialport}.
"""
from twisted.trial import unittest
from twisted.python.failure import Failure
from twisted.internet.protocol import Protocol
from twisted.internet.error import ConnectionDone
try:
from twisted.internet import serialport
except ImportError:
serialport = None
class DoNothing(object):
"""
Object with methods that do nothing.
"""
def __init__(self, *args, **kwargs):
pass
def __getattr__(self, attr):
return lambda *args, **kwargs: None
class SerialPortTests(unittest.TestCase):
"""
Minimal testing for Twisted's serial port support.
See ticket #2462 for the eventual full test suite.
"""
if serialport is None:
skip = "Serial port support is not available."
def test_connectionMadeLost(self):
"""
C{connectionMade} and C{connectionLost} are called on the protocol by
the C{SerialPort}.
"""
# Serial port that doesn't actually connect to anything:
class DummySerialPort(serialport.SerialPort):
_serialFactory = DoNothing
def _finishPortSetup(self):
pass # override default win32 actions
events = []
class SerialProtocol(Protocol):
def connectionMade(self):
events.append("connectionMade")
def connectionLost(self, reason):
events.append(("connectionLost", reason))
# Creation of port should result in connectionMade call:
port = DummySerialPort(SerialProtocol(), "", reactor=DoNothing())
self.assertEqual(events, ["connectionMade"])
# Simulate reactor calling connectionLost on the SerialPort:
f = Failure(ConnectionDone())
port.connectionLost(f)
self.assertEqual(events, ["connectionMade", ("connectionLost", f)])
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