With current master (5b5e88df16ac072f9119991f1e143e84268db540) I'm getting assertion failures in 5 tubes tests, all apparently because RequestableChannelClasses doesn't have the contents these tests want.

The assertion that fails is tests/twisted/tubes/tubetestutil.py:89:

    # muc tubes channel (old API)
    assert ({cs.CHANNEL_TYPE: cs.CHANNEL_TYPE_TUBES,
             cs.TARGET_HANDLE_TYPE: cs.HT_ROOM,
             },
             [cs.TARGET_HANDLE, cs.TARGET_ID
             ]
            ) in properties.get('RequestableChannelClasses'),\
                     properties['RequestableChannelClasses']

This appears to be because Tubes ROOM channels now have ChannelType in the allowed properties as well as in the fixed properties, which doesn't make sense.

This, in turn, seems to be because the array of allowed properties isn't correctly NULL-terminated. Patch soon.