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"""test building messages with streamsession"""
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#-------------------------------------------------------------------------------
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# Copyright (C) 2011 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-------------------------------------------------------------------------------
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#-------------------------------------------------------------------------------
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# Imports
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#-------------------------------------------------------------------------------
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import os
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import uuid
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from datetime import datetime
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import zmq
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from zmq.tests import BaseZMQTestCase
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from zmq.eventloop.zmqstream import ZMQStream
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from IPython.kernel.zmq import session as ss
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from IPython.testing.decorators import skipif, module_not_available
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from IPython.utils.py3compat import string_types
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from IPython.utils import jsonutil
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def _bad_packer(obj):
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raise TypeError("I don't work")
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def _bad_unpacker(bytes):
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raise TypeError("I don't work either")
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class SessionTestCase(BaseZMQTestCase):
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def setUp(self):
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BaseZMQTestCase.setUp(self)
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self.session = ss.Session()
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class TestSession(SessionTestCase):
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def test_msg(self):
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"""message format"""
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msg = self.session.msg('execute')
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thekeys = set('header parent_header metadata content msg_type msg_id'.split())
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s = set(msg.keys())
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self.assertEqual(s, thekeys)
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self.assertTrue(isinstance(msg['content'],dict))
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self.assertTrue(isinstance(msg['metadata'],dict))
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self.assertTrue(isinstance(msg['header'],dict))
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self.assertTrue(isinstance(msg['parent_header'],dict))
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self.assertTrue(isinstance(msg['msg_id'],str))
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self.assertTrue(isinstance(msg['msg_type'],str))
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self.assertEqual(msg['header']['msg_type'], 'execute')
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self.assertEqual(msg['msg_type'], 'execute')
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def test_serialize(self):
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msg = self.session.msg('execute', content=dict(a=10, b=1.1))
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msg_list = self.session.serialize(msg, ident=b'foo')
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ident, msg_list = self.session.feed_identities(msg_list)
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new_msg = self.session.unserialize(msg_list)
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self.assertEqual(ident[0], b'foo')
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self.assertEqual(new_msg['msg_id'],msg['msg_id'])
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self.assertEqual(new_msg['msg_type'],msg['msg_type'])
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self.assertEqual(new_msg['header'],msg['header'])
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self.assertEqual(new_msg['content'],msg['content'])
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self.assertEqual(new_msg['parent_header'],msg['parent_header'])
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self.assertEqual(new_msg['metadata'],msg['metadata'])
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# ensure floats don't come out as Decimal:
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self.assertEqual(type(new_msg['content']['b']),type(new_msg['content']['b']))
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def test_send(self):
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ctx = zmq.Context.instance()
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A = ctx.socket(zmq.PAIR)
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B = ctx.socket(zmq.PAIR)
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A.bind("inproc://test")
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B.connect("inproc://test")
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msg = self.session.msg('execute', content=dict(a=10))
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self.session.send(A, msg, ident=b'foo', buffers=[b'bar'])
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ident, msg_list = self.session.feed_identities(B.recv_multipart())
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new_msg = self.session.unserialize(msg_list)
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self.assertEqual(ident[0], b'foo')
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self.assertEqual(new_msg['msg_id'],msg['msg_id'])
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self.assertEqual(new_msg['msg_type'],msg['msg_type'])
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self.assertEqual(new_msg['header'],msg['header'])
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self.assertEqual(new_msg['content'],msg['content'])
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self.assertEqual(new_msg['parent_header'],msg['parent_header'])
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self.assertEqual(new_msg['metadata'],msg['metadata'])
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self.assertEqual(new_msg['buffers'],[b'bar'])
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content = msg['content']
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header = msg['header']
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parent = msg['parent_header']
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metadata = msg['metadata']
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msg_type = header['msg_type']
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self.session.send(A, None, content=content, parent=parent,
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header=header, metadata=metadata, ident=b'foo', buffers=[b'bar'])
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ident, msg_list = self.session.feed_identities(B.recv_multipart())
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new_msg = self.session.unserialize(msg_list)
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self.assertEqual(ident[0], b'foo')
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self.assertEqual(new_msg['msg_id'],msg['msg_id'])
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self.assertEqual(new_msg['msg_type'],msg['msg_type'])
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self.assertEqual(new_msg['header'],msg['header'])
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self.assertEqual(new_msg['content'],msg['content'])
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self.assertEqual(new_msg['metadata'],msg['metadata'])
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self.assertEqual(new_msg['parent_header'],msg['parent_header'])
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self.assertEqual(new_msg['buffers'],[b'bar'])
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self.session.send(A, msg, ident=b'foo', buffers=[b'bar'])
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ident, new_msg = self.session.recv(B)
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self.assertEqual(ident[0], b'foo')
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self.assertEqual(new_msg['msg_id'],msg['msg_id'])
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self.assertEqual(new_msg['msg_type'],msg['msg_type'])
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self.assertEqual(new_msg['header'],msg['header'])
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self.assertEqual(new_msg['content'],msg['content'])
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self.assertEqual(new_msg['metadata'],msg['metadata'])
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self.assertEqual(new_msg['parent_header'],msg['parent_header'])
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self.assertEqual(new_msg['buffers'],[b'bar'])
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A.close()
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B.close()
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ctx.term()
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def test_args(self):
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"""initialization arguments for Session"""
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s = self.session
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self.assertTrue(s.pack is ss.default_packer)
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self.assertTrue(s.unpack is ss.default_unpacker)
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self.assertEqual(s.username, os.environ.get('USER', u'username'))
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s = ss.Session()
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self.assertEqual(s.username, os.environ.get('USER', u'username'))
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self.assertRaises(TypeError, ss.Session, pack='hi')
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self.assertRaises(TypeError, ss.Session, unpack='hi')
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u = str(uuid.uuid4())
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s = ss.Session(username=u'carrot', session=u)
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self.assertEqual(s.session, u)
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self.assertEqual(s.username, u'carrot')
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def test_tracking(self):
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"""test tracking messages"""
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a,b = self.create_bound_pair(zmq.PAIR, zmq.PAIR)
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s = self.session
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s.copy_threshold = 1
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stream = ZMQStream(a)
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msg = s.send(a, 'hello', track=False)
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self.assertTrue(msg['tracker'] is ss.DONE)
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msg = s.send(a, 'hello', track=True)
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self.assertTrue(isinstance(msg['tracker'], zmq.MessageTracker))
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M = zmq.Message(b'hi there', track=True)
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msg = s.send(a, 'hello', buffers=[M], track=True)
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t = msg['tracker']
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self.assertTrue(isinstance(t, zmq.MessageTracker))
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self.assertRaises(zmq.NotDone, t.wait, .1)
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del M
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t.wait(1) # this will raise
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def test_unique_msg_ids(self):
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"""test that messages receive unique ids"""
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ids = set()
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for i in range(2**12):
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h = self.session.msg_header('test')
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msg_id = h['msg_id']
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self.assertTrue(msg_id not in ids)
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ids.add(msg_id)
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def test_feed_identities(self):
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"""scrub the front for zmq IDENTITIES"""
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theids = "engine client other".split()
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content = dict(code='whoda',stuff=object())
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themsg = self.session.msg('execute',content=content)
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pmsg = theids
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def test_session_id(self):
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session = ss.Session()
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# get bs before us
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bs = session.bsession
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us = session.session
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self.assertEqual(us.encode('ascii'), bs)
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session = ss.Session()
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# get us before bs
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us = session.session
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bs = session.bsession
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self.assertEqual(us.encode('ascii'), bs)
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# change propagates:
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session.session = 'something else'
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bs = session.bsession
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us = session.session
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self.assertEqual(us.encode('ascii'), bs)
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session = ss.Session(session='stuff')
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# get us before bs
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self.assertEqual(session.bsession, session.session.encode('ascii'))
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self.assertEqual(b'stuff', session.bsession)
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def test_zero_digest_history(self):
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session = ss.Session(digest_history_size=0)
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for i in range(11):
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session._add_digest(uuid.uuid4().bytes)
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self.assertEqual(len(session.digest_history), 0)
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def test_cull_digest_history(self):
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session = ss.Session(digest_history_size=100)
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for i in range(100):
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session._add_digest(uuid.uuid4().bytes)
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self.assertTrue(len(session.digest_history) == 100)
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session._add_digest(uuid.uuid4().bytes)
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self.assertTrue(len(session.digest_history) == 91)
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for i in range(9):
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session._add_digest(uuid.uuid4().bytes)
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self.assertTrue(len(session.digest_history) == 100)
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session._add_digest(uuid.uuid4().bytes)
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self.assertTrue(len(session.digest_history) == 91)
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def test_bad_pack(self):
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try:
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session = ss.Session(pack=_bad_packer)
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except ValueError as e:
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self.assertIn("could not serialize", str(e))
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self.assertIn("don't work", str(e))
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else:
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self.fail("Should have raised ValueError")
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def test_bad_unpack(self):
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try:
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session = ss.Session(unpack=_bad_unpacker)
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except ValueError as e:
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self.assertIn("could not handle output", str(e))
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self.assertIn("don't work either", str(e))
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else:
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self.fail("Should have raised ValueError")
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def test_bad_packer(self):
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try:
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session = ss.Session(packer=__name__ + '._bad_packer')
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except ValueError as e:
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self.assertIn("could not serialize", str(e))
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self.assertIn("don't work", str(e))
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else:
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self.fail("Should have raised ValueError")
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def test_bad_unpacker(self):
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try:
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session = ss.Session(unpacker=__name__ + '._bad_unpacker')
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except ValueError as e:
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self.assertIn("could not handle output", str(e))
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self.assertIn("don't work either", str(e))
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else:
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self.fail("Should have raised ValueError")
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def test_bad_roundtrip(self):
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with self.assertRaises(ValueError):
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session = ss.Session(unpack=lambda b: 5)
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def _datetime_test(self, session):
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content = dict(t=datetime.now())
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metadata = dict(t=datetime.now())
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p = session.msg('msg')
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msg = session.msg('msg', content=content, metadata=metadata, parent=p['header'])
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smsg = session.serialize(msg)
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msg2 = session.unserialize(session.feed_identities(smsg)[1])
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assert isinstance(msg2['header']['date'], datetime)
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self.assertEqual(msg['header'], msg2['header'])
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self.assertEqual(msg['parent_header'], msg2['parent_header'])
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self.assertEqual(msg['parent_header'], msg2['parent_header'])
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assert isinstance(msg['content']['t'], datetime)
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assert isinstance(msg['metadata']['t'], datetime)
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assert isinstance(msg2['content']['t'], string_types)
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assert isinstance(msg2['metadata']['t'], string_types)
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self.assertEqual(msg['content'], jsonutil.extract_dates(msg2['content']))
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self.assertEqual(msg['content'], jsonutil.extract_dates(msg2['content']))
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def test_datetimes(self):
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self._datetime_test(self.session)
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def test_datetimes_pickle(self):
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session = ss.Session(packer='pickle')
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self._datetime_test(session)
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@skipif(module_not_available('msgpack'))
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def test_datetimes_msgpack(self):
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import msgpack
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session = ss.Session(
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pack=msgpack.packb,
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unpack=lambda buf: msgpack.unpackb(buf, encoding='utf8'),
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)
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self._datetime_test(session)
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def test_send_raw(self):
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ctx = zmq.Context.instance()
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A = ctx.socket(zmq.PAIR)
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B = ctx.socket(zmq.PAIR)
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A.bind("inproc://test")
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B.connect("inproc://test")
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msg = self.session.msg('execute', content=dict(a=10))
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msg_list = [self.session.pack(msg[part]) for part in
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['header', 'parent_header', 'metadata', 'content']]
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self.session.send_raw(A, msg_list, ident=b'foo')
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ident, new_msg_list = self.session.feed_identities(B.recv_multipart())
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new_msg = self.session.unserialize(new_msg_list)
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self.assertEqual(ident[0], b'foo')
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self.assertEqual(new_msg['msg_type'],msg['msg_type'])
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self.assertEqual(new_msg['header'],msg['header'])
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self.assertEqual(new_msg['parent_header'],msg['parent_header'])
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self.assertEqual(new_msg['content'],msg['content'])
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self.assertEqual(new_msg['metadata'],msg['metadata'])
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A.close()
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B.close()
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ctx.term()
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