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# Copyright (C) PyZMQ Developers
# Distributed under the terms of the Modified BSD License.
import gc
import sys
import time
from threading import Thread, Event
import zmq
from zmq.tests import (
BaseZMQTestCase, have_gevent, GreenTest, skip_green, PYPY, SkipTest,
)
class TestContext(BaseZMQTestCase):
def test_init(self):
c1 = self.Context()
self.assert_(isinstance(c1, self.Context))
del c1
c2 = self.Context()
self.assert_(isinstance(c2, self.Context))
del c2
c3 = self.Context()
self.assert_(isinstance(c3, self.Context))
del c3
def test_dir(self):
ctx = self.Context()
self.assertTrue('socket' in dir(ctx))
if zmq.zmq_version_info() > (3,):
self.assertTrue('IO_THREADS' in dir(ctx))
ctx.term()
def test_term(self):
c = self.Context()
c.term()
self.assert_(c.closed)
def test_context_manager(self):
with self.Context() as c:
pass
self.assert_(c.closed)
def test_fail_init(self):
self.assertRaisesErrno(zmq.EINVAL, self.Context, -1)
def test_term_hang(self):
rep,req = self.create_bound_pair(zmq.ROUTER, zmq.DEALER)
req.setsockopt(zmq.LINGER, 0)
req.send(b'hello', copy=False)
req.close()
rep.close()
self.context.term()
def test_instance(self):
ctx = self.Context.instance()
c2 = self.Context.instance(io_threads=2)
self.assertTrue(c2 is ctx)
c2.term()
c3 = self.Context.instance()
c4 = self.Context.instance()
self.assertFalse(c3 is c2)
self.assertFalse(c3.closed)
self.assertTrue(c3 is c4)
def test_many_sockets(self):
"""opening and closing many sockets shouldn't cause problems"""
ctx = self.Context()
for i in range(16):
sockets = [ ctx.socket(zmq.REP) for i in range(65) ]
[ s.close() for s in sockets ]
# give the reaper a chance
time.sleep(1e-2)
ctx.term()
def test_sockopts(self):
"""setting socket options with ctx attributes"""
ctx = self.Context()
ctx.linger = 5
self.assertEqual(ctx.linger, 5)
s = ctx.socket(zmq.REQ)
self.assertEqual(s.linger, 5)
self.assertEqual(s.getsockopt(zmq.LINGER), 5)
s.close()
# check that subscribe doesn't get set on sockets that don't subscribe:
ctx.subscribe = b''
s = ctx.socket(zmq.REQ)
s.close()
ctx.term()
def test_destroy(self):
"""Context.destroy should close sockets"""
ctx = self.Context()
sockets = [ ctx.socket(zmq.REP) for i in range(65) ]
# close half of the sockets
[ s.close() for s in sockets[::2] ]
ctx.destroy()
# reaper is not instantaneous
time.sleep(1e-2)
for s in sockets:
self.assertTrue(s.closed)
def test_destroy_linger(self):
"""Context.destroy should set linger on closing sockets"""
req,rep = self.create_bound_pair(zmq.REQ, zmq.REP)
req.send(b'hi')
time.sleep(1e-2)
self.context.destroy(linger=0)
# reaper is not instantaneous
time.sleep(1e-2)
for s in (req,rep):
self.assertTrue(s.closed)
def test_term_noclose(self):
"""Context.term won't close sockets"""
ctx = self.Context()
s = ctx.socket(zmq.REQ)
self.assertFalse(s.closed)
t = Thread(target=ctx.term)
t.start()
t.join(timeout=0.1)
self.assertTrue(t.is_alive(), "Context should be waiting")
s.close()
t.join(timeout=0.1)
self.assertFalse(t.is_alive(), "Context should have closed")
def test_gc(self):
"""test close&term by garbage collection alone"""
if PYPY:
raise SkipTest("GC doesn't work ")
# test credit @dln (GH #137):
def gcf():
def inner():
ctx = self.Context()
s = ctx.socket(zmq.PUSH)
inner()
gc.collect()
t = Thread(target=gcf)
t.start()
t.join(timeout=1)
self.assertFalse(t.is_alive(), "Garbage collection should have cleaned up context")
def test_cyclic_destroy(self):
"""ctx.destroy should succeed when cyclic ref prevents gc"""
# test credit @dln (GH #137):
class CyclicReference(object):
def __init__(self, parent=None):
self.parent = parent
def crash(self, sock):
self.sock = sock
self.child = CyclicReference(self)
def crash_zmq():
ctx = self.Context()
sock = ctx.socket(zmq.PULL)
c = CyclicReference()
c.crash(sock)
ctx.destroy()
crash_zmq()
def test_term_thread(self):
"""ctx.term should not crash active threads (#139)"""
ctx = self.Context()
evt = Event()
evt.clear()
def block():
s = ctx.socket(zmq.REP)
s.bind_to_random_port('tcp://127.0.0.1')
evt.set()
try:
s.recv()
except zmq.ZMQError as e:
self.assertEqual(e.errno, zmq.ETERM)
return
finally:
s.close()
self.fail("recv should have been interrupted with ETERM")
t = Thread(target=block)
t.start()
evt.wait(1)
self.assertTrue(evt.is_set(), "sync event never fired")
time.sleep(0.01)
ctx.term()
t.join(timeout=1)
self.assertFalse(t.is_alive(), "term should have interrupted s.recv()")
def test_destroy_no_sockets(self):
ctx = self.Context()
s = ctx.socket(zmq.PUB)
s.bind_to_random_port('tcp://127.0.0.1')
s.close()
ctx.destroy()
assert s.closed
assert ctx.closed
def test_ctx_opts(self):
if zmq.zmq_version_info() < (3,):
raise SkipTest("context options require libzmq 3")
ctx = self.Context()
ctx.set(zmq.MAX_SOCKETS, 2)
self.assertEqual(ctx.get(zmq.MAX_SOCKETS), 2)
ctx.max_sockets = 100
self.assertEqual(ctx.max_sockets, 100)
self.assertEqual(ctx.get(zmq.MAX_SOCKETS), 100)
def test_shadow(self):
ctx = self.Context()
ctx2 = self.Context.shadow(ctx.underlying)
self.assertEqual(ctx.underlying, ctx2.underlying)
s = ctx.socket(zmq.PUB)
s.close()
del ctx2
self.assertFalse(ctx.closed)
s = ctx.socket(zmq.PUB)
ctx2 = self.Context.shadow(ctx.underlying)
s2 = ctx2.socket(zmq.PUB)
s.close()
s2.close()
ctx.term()
self.assertRaisesErrno(zmq.EFAULT, ctx2.socket, zmq.PUB)
del ctx2
def test_shadow_pyczmq(self):
try:
from pyczmq import zctx, zsocket, zstr
except Exception:
raise SkipTest("Requires pyczmq")
ctx = zctx.new()
a = zsocket.new(ctx, zmq.PUSH)
zsocket.bind(a, "inproc://a")
ctx2 = self.Context.shadow_pyczmq(ctx)
b = ctx2.socket(zmq.PULL)
b.connect("inproc://a")
zstr.send(a, b'hi')
rcvd = self.recv(b)
self.assertEqual(rcvd, b'hi')
b.close()
if False: # disable green context tests
class TestContextGreen(GreenTest, TestContext):
"""gevent subclass of context tests"""
# skip tests that use real threads:
test_gc = GreenTest.skip_green
test_term_thread = GreenTest.skip_green
test_destroy_linger = GreenTest.skip_green
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