Current File : //lib/python3/dist-packages/twisted/test/test_tpfile.py
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
from twisted.trial import unittest
from twisted.protocols import loopback
from twisted.protocols import basic
from twisted.internet import protocol, abstract
from io import BytesIO
class BufferingServer(protocol.Protocol):
buffer = b''
def dataReceived(self, data):
self.buffer += data
class FileSendingClient(protocol.Protocol):
def __init__(self, f):
self.f = f
def connectionMade(self):
s = basic.FileSender()
d = s.beginFileTransfer(self.f, self.transport, lambda x: x)
d.addCallback(lambda r: self.transport.loseConnection())
class FileSenderTests(unittest.TestCase):
def testSendingFile(self):
testStr = b'xyz' * 100 + b'abc' * 100 + b'123' * 100
s = BufferingServer()
c = FileSendingClient(BytesIO(testStr))
d = loopback.loopbackTCP(s, c)
d.addCallback(lambda x : self.assertEqual(s.buffer, testStr))
return d
def testSendingEmptyFile(self):
fileSender = basic.FileSender()
consumer = abstract.FileDescriptor()
consumer.connected = 1
emptyFile = BytesIO(b'')
d = fileSender.beginFileTransfer(emptyFile, consumer, lambda x: x)
# The producer will be immediately exhausted, and so immediately
# unregistered
self.assertIsNone(consumer.producer)
# Which means the Deferred from FileSender should have been called
self.assertTrue(d.called,
'producer unregistered with deferred being called')
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