356 lines
11 KiB
Python
356 lines
11 KiB
Python
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# Copyright (C) PyZMQ Developers
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# Distributed under the terms of the Modified BSD License.
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import copy
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import gc
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import os
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import sys
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import time
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from threading import Thread, Event
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try:
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from queue import Queue
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except ImportError:
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from Queue import Queue
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from pytest import mark
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import zmq
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from zmq.tests import (
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BaseZMQTestCase, have_gevent, GreenTest, skip_green, PYPY, SkipTest,
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)
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class KwargTestSocket(zmq.Socket):
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test_kwarg_value = None
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def __init__(self, *args, **kwargs):
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self.test_kwarg_value = kwargs.pop('test_kwarg', None)
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super(KwargTestSocket, self).__init__(*args, **kwargs)
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class KwargTestContext(zmq.Context):
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_socket_class = KwargTestSocket
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class TestContext(BaseZMQTestCase):
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def test_init(self):
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c1 = self.Context()
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self.assert_(isinstance(c1, self.Context))
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del c1
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c2 = self.Context()
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self.assert_(isinstance(c2, self.Context))
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del c2
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c3 = self.Context()
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self.assert_(isinstance(c3, self.Context))
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del c3
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def test_dir(self):
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ctx = self.Context()
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self.assertTrue('socket' in dir(ctx))
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if zmq.zmq_version_info() > (3,):
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self.assertTrue('IO_THREADS' in dir(ctx))
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ctx.term()
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def test_term(self):
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c = self.Context()
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c.term()
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self.assert_(c.closed)
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def test_context_manager(self):
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with self.Context() as c:
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pass
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self.assert_(c.closed)
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def test_fail_init(self):
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self.assertRaisesErrno(zmq.EINVAL, self.Context, -1)
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def test_term_hang(self):
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rep,req = self.create_bound_pair(zmq.ROUTER, zmq.DEALER)
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req.setsockopt(zmq.LINGER, 0)
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req.send(b'hello', copy=False)
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req.close()
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rep.close()
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self.context.term()
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def test_instance(self):
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ctx = self.Context.instance()
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c2 = self.Context.instance(io_threads=2)
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self.assertTrue(c2 is ctx)
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c2.term()
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c3 = self.Context.instance()
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c4 = self.Context.instance()
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self.assertFalse(c3 is c2)
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self.assertFalse(c3.closed)
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self.assertTrue(c3 is c4)
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def test_instance_threadsafe(self):
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self.context.term() # clear default context
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q = Queue()
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# slow context initialization,
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# to ensure that we are both trying to create one at the same time
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class SlowContext(self.Context):
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def __init__(self, *a, **kw):
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time.sleep(1)
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super(SlowContext, self).__init__(*a, **kw)
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def f():
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q.put(SlowContext.instance())
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# call ctx.instance() in several threads at once
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N = 16
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threads = [ Thread(target=f) for i in range(N) ]
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[ t.start() for t in threads ]
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# also call it in the main thread (not first)
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ctx = SlowContext.instance()
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assert isinstance(ctx, SlowContext)
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# check that all the threads got the same context
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for i in range(N):
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thread_ctx = q.get(timeout=5)
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assert thread_ctx is ctx
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# cleanup
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ctx.term()
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[ t.join(timeout=5) for t in threads ]
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def test_socket_passes_kwargs(self):
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test_kwarg_value = 'testing one two three'
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with KwargTestContext() as ctx:
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with ctx.socket(zmq.DEALER, test_kwarg=test_kwarg_value) as socket:
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self.assertTrue(socket.test_kwarg_value is test_kwarg_value)
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def test_many_sockets(self):
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"""opening and closing many sockets shouldn't cause problems"""
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ctx = self.Context()
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for i in range(16):
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sockets = [ ctx.socket(zmq.REP) for i in range(65) ]
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[ s.close() for s in sockets ]
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# give the reaper a chance
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time.sleep(1e-2)
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ctx.term()
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def test_sockopts(self):
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"""setting socket options with ctx attributes"""
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ctx = self.Context()
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ctx.linger = 5
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self.assertEqual(ctx.linger, 5)
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s = ctx.socket(zmq.REQ)
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self.assertEqual(s.linger, 5)
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self.assertEqual(s.getsockopt(zmq.LINGER), 5)
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s.close()
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# check that subscribe doesn't get set on sockets that don't subscribe:
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ctx.subscribe = b''
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s = ctx.socket(zmq.REQ)
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s.close()
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ctx.term()
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@mark.skipif(
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sys.platform.startswith('win'),
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reason='Segfaults on Windows')
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def test_destroy(self):
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"""Context.destroy should close sockets"""
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ctx = self.Context()
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sockets = [ ctx.socket(zmq.REP) for i in range(65) ]
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# close half of the sockets
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[ s.close() for s in sockets[::2] ]
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ctx.destroy()
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# reaper is not instantaneous
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time.sleep(1e-2)
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for s in sockets:
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self.assertTrue(s.closed)
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def test_destroy_linger(self):
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"""Context.destroy should set linger on closing sockets"""
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req,rep = self.create_bound_pair(zmq.REQ, zmq.REP)
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req.send(b'hi')
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time.sleep(1e-2)
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self.context.destroy(linger=0)
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# reaper is not instantaneous
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time.sleep(1e-2)
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for s in (req,rep):
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self.assertTrue(s.closed)
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def test_term_noclose(self):
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"""Context.term won't close sockets"""
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ctx = self.Context()
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s = ctx.socket(zmq.REQ)
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self.assertFalse(s.closed)
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t = Thread(target=ctx.term)
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t.start()
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t.join(timeout=0.1)
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self.assertTrue(t.is_alive(), "Context should be waiting")
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s.close()
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t.join(timeout=0.1)
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self.assertFalse(t.is_alive(), "Context should have closed")
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def test_gc(self):
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"""test close&term by garbage collection alone"""
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if PYPY:
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raise SkipTest("GC doesn't work ")
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# test credit @dln (GH #137):
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def gcf():
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def inner():
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ctx = self.Context()
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s = ctx.socket(zmq.PUSH)
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inner()
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gc.collect()
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t = Thread(target=gcf)
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t.start()
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t.join(timeout=1)
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self.assertFalse(t.is_alive(), "Garbage collection should have cleaned up context")
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def test_cyclic_destroy(self):
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"""ctx.destroy should succeed when cyclic ref prevents gc"""
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# test credit @dln (GH #137):
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class CyclicReference(object):
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def __init__(self, parent=None):
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self.parent = parent
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def crash(self, sock):
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self.sock = sock
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self.child = CyclicReference(self)
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def crash_zmq():
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ctx = self.Context()
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sock = ctx.socket(zmq.PULL)
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c = CyclicReference()
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c.crash(sock)
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ctx.destroy()
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crash_zmq()
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def test_term_thread(self):
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"""ctx.term should not crash active threads (#139)"""
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ctx = self.Context()
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evt = Event()
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evt.clear()
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def block():
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s = ctx.socket(zmq.REP)
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s.bind_to_random_port('tcp://127.0.0.1')
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evt.set()
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try:
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s.recv()
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except zmq.ZMQError as e:
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self.assertEqual(e.errno, zmq.ETERM)
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return
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finally:
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s.close()
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self.fail("recv should have been interrupted with ETERM")
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t = Thread(target=block)
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t.start()
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evt.wait(1)
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self.assertTrue(evt.is_set(), "sync event never fired")
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time.sleep(0.01)
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ctx.term()
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t.join(timeout=1)
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self.assertFalse(t.is_alive(), "term should have interrupted s.recv()")
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def test_destroy_no_sockets(self):
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ctx = self.Context()
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s = ctx.socket(zmq.PUB)
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s.bind_to_random_port('tcp://127.0.0.1')
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s.close()
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ctx.destroy()
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assert s.closed
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assert ctx.closed
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def test_ctx_opts(self):
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if zmq.zmq_version_info() < (3,):
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raise SkipTest("context options require libzmq 3")
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ctx = self.Context()
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ctx.set(zmq.MAX_SOCKETS, 2)
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self.assertEqual(ctx.get(zmq.MAX_SOCKETS), 2)
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ctx.max_sockets = 100
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self.assertEqual(ctx.max_sockets, 100)
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self.assertEqual(ctx.get(zmq.MAX_SOCKETS), 100)
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def test_copy(self):
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c1 = self.Context()
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c2 = copy.copy(c1)
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c2b = copy.deepcopy(c1)
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c3 = copy.deepcopy(c2)
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self.assert_(c2._shadow)
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self.assert_(c3._shadow)
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self.assertEqual(c1.underlying, c2.underlying)
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self.assertEqual(c1.underlying, c3.underlying)
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self.assertEqual(c1.underlying, c2b.underlying)
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s = c3.socket(zmq.PUB)
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s.close()
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c1.term()
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def test_shadow(self):
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ctx = self.Context()
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ctx2 = self.Context.shadow(ctx.underlying)
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self.assertEqual(ctx.underlying, ctx2.underlying)
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s = ctx.socket(zmq.PUB)
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s.close()
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del ctx2
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self.assertFalse(ctx.closed)
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s = ctx.socket(zmq.PUB)
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ctx2 = self.Context.shadow(ctx.underlying)
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s2 = ctx2.socket(zmq.PUB)
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s.close()
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s2.close()
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ctx.term()
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self.assertRaisesErrno(zmq.EFAULT, ctx2.socket, zmq.PUB)
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del ctx2
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def test_shadow_pyczmq(self):
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try:
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from pyczmq import zctx, zsocket, zstr
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except Exception:
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raise SkipTest("Requires pyczmq")
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ctx = zctx.new()
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a = zsocket.new(ctx, zmq.PUSH)
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zsocket.bind(a, "inproc://a")
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ctx2 = self.Context.shadow_pyczmq(ctx)
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b = ctx2.socket(zmq.PULL)
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b.connect("inproc://a")
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zstr.send(a, b'hi')
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rcvd = self.recv(b)
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self.assertEqual(rcvd, b'hi')
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b.close()
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@mark.skipif(
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sys.platform.startswith('win'),
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reason='No fork on Windows')
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def test_fork_instance(self):
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ctx = self.Context.instance()
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parent_ctx_id = id(ctx)
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r_fd, w_fd = os.pipe()
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reader = os.fdopen(r_fd, 'r')
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child_pid = os.fork()
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if child_pid == 0:
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ctx = self.Context.instance()
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writer = os.fdopen(w_fd, 'w')
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child_ctx_id = id(ctx)
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ctx.term()
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writer.write(str(child_ctx_id) + "\n")
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writer.flush()
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writer.close()
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os._exit(0)
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else:
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os.close(w_fd)
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child_id_s = reader.readline()
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reader.close()
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assert child_id_s
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assert int(child_id_s) != parent_ctx_id
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ctx.term()
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if False: # disable green context tests
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class TestContextGreen(GreenTest, TestContext):
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"""gevent subclass of context tests"""
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# skip tests that use real threads:
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test_gc = GreenTest.skip_green
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test_term_thread = GreenTest.skip_green
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test_destroy_linger = GreenTest.skip_green
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