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Viewing changes to src/twisted/test/testutils.py

  • Committer: Thomas Hervé
  • Date: 2009-07-08 13:52:04 UTC
  • Revision ID: thomas@canonical.com-20090708135204-df5eesrthifpylf8
Remove twisted copy

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src/twisted/test/testutils.py
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from cStringIO import StringIO
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from twisted.internet.protocol import FileWrapper
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class IOPump:
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    """Utility to pump data between clients and servers for protocol testing.
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    Perhaps this is a utility worthy of being in protocol.py?
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    """
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    def __init__(self, client, server, clientIO, serverIO):
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        self.client = client
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        self.server = server
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        self.clientIO = clientIO
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        self.serverIO = serverIO
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    def flush(self):
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        "Pump until there is no more input or output."
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        while self.pump():
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            pass
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    def pump(self):
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        """Move data back and forth.
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        Returns whether any data was moved.
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        """
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        self.clientIO.seek(0)
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        self.serverIO.seek(0)
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        cData = self.clientIO.read()
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        sData = self.serverIO.read()
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        self.clientIO.seek(0)
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        self.serverIO.seek(0)
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        self.clientIO.truncate()
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        self.serverIO.truncate()
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        for byte in cData:
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            self.server.dataReceived(byte)
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        for byte in sData:
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            self.client.dataReceived(byte)
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        if cData or sData:
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            return 1
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        else:
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            return 0
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def returnConnected(server, client):
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    """Take two Protocol instances and connect them.
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    """
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    cio = StringIO()
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    sio = StringIO()
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    client.makeConnection(FileWrapper(cio))
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    server.makeConnection(FileWrapper(sio))
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    pump = IOPump(client, server, cio, sio)
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    # Challenge-response authentication:
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    pump.flush()
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    # Uh...
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    pump.flush()
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    return pump