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: /lib/python3/dist-packages/twisted/test/ [ drwxr-xr-x ]
name : 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')