Mini Shell
# -*- coding: utf8 -*-
# Copyright (C) PyZMQ Developers
# Distributed under the terms of the Modified BSD License.
import copy
import sys
try:
from sys import getrefcount as grc
except ImportError:
grc = None
import time
from pprint import pprint
from unittest import TestCase
import zmq
from zmq.tests import BaseZMQTestCase, SkipTest, skip_pypy, PYPY
from zmq.utils.strtypes import unicode, bytes, b, u
# some useful constants:
x = b'x'
if grc:
rc0 = grc(x)
v = memoryview(x)
view_rc = grc(x) - rc0
def await_gc(obj, rc):
"""wait for refcount on an object to drop to an expected value
Necessary because of the zero-copy gc thread,
which can take some time to receive its DECREF message.
"""
for i in range(50):
# rc + 2 because of the refs in this function
if grc(obj) <= rc + 2:
return
time.sleep(0.05)
class TestFrame(BaseZMQTestCase):
@skip_pypy
def test_above_30(self):
"""Message above 30 bytes are never copied by 0MQ."""
for i in range(5, 16): # 32, 64,..., 65536
s = (2**i)*x
self.assertEqual(grc(s), 2)
m = zmq.Frame(s, copy=False)
self.assertEqual(grc(s), 4)
del m
await_gc(s, 2)
self.assertEqual(grc(s), 2)
del s
def test_str(self):
"""Test the str representations of the Frames."""
for i in range(16):
s = (2**i)*x
m = zmq.Frame(s)
m_str = str(m)
m_str_b = b(m_str) # py3compat
self.assertEqual(s, m_str_b)
def test_bytes(self):
"""Test the Frame.bytes property."""
for i in range(1,16):
s = (2**i)*x
m = zmq.Frame(s)
b = m.bytes
self.assertEqual(s, m.bytes)
if not PYPY:
# check that it copies
self.assert_(b is not s)
# check that it copies only once
self.assert_(b is m.bytes)
def test_unicode(self):
"""Test the unicode representations of the Frames."""
s = u('asdf')
self.assertRaises(TypeError, zmq.Frame, s)
for i in range(16):
s = (2**i)*u('§')
m = zmq.Frame(s.encode('utf8'))
self.assertEqual(s, unicode(m.bytes,'utf8'))
def test_len(self):
"""Test the len of the Frames."""
for i in range(16):
s = (2**i)*x
m = zmq.Frame(s)
self.assertEqual(len(s), len(m))
@skip_pypy
def test_lifecycle1(self):
"""Run through a ref counting cycle with a copy."""
for i in range(5, 16): # 32, 64,..., 65536
s = (2**i)*x
rc = 2
self.assertEqual(grc(s), rc)
m = zmq.Frame(s, copy=False)
rc += 2
self.assertEqual(grc(s), rc)
m2 = copy.copy(m)
rc += 1
self.assertEqual(grc(s), rc)
buf = m2.buffer
rc += view_rc
self.assertEqual(grc(s), rc)
self.assertEqual(s, b(str(m)))
self.assertEqual(s, bytes(m2))
self.assertEqual(s, m.bytes)
# self.assert_(s is str(m))
# self.assert_(s is str(m2))
del m2
rc -= 1
self.assertEqual(grc(s), rc)
rc -= view_rc
del buf
self.assertEqual(grc(s), rc)
del m
rc -= 2
await_gc(s, rc)
self.assertEqual(grc(s), rc)
self.assertEqual(rc, 2)
del s
@skip_pypy
def test_lifecycle2(self):
"""Run through a different ref counting cycle with a copy."""
for i in range(5, 16): # 32, 64,..., 65536
s = (2**i)*x
rc = 2
self.assertEqual(grc(s), rc)
m = zmq.Frame(s, copy=False)
rc += 2
self.assertEqual(grc(s), rc)
m2 = copy.copy(m)
rc += 1
self.assertEqual(grc(s), rc)
buf = m.buffer
rc += view_rc
self.assertEqual(grc(s), rc)
self.assertEqual(s, b(str(m)))
self.assertEqual(s, bytes(m2))
self.assertEqual(s, m2.bytes)
self.assertEqual(s, m.bytes)
# self.assert_(s is str(m))
# self.assert_(s is str(m2))
del buf
self.assertEqual(grc(s), rc)
del m
# m.buffer is kept until m is del'd
rc -= view_rc
rc -= 1
self.assertEqual(grc(s), rc)
del m2
rc -= 2
await_gc(s, rc)
self.assertEqual(grc(s), rc)
self.assertEqual(rc, 2)
del s
@skip_pypy
def test_tracker(self):
m = zmq.Frame(b'asdf', copy=False, track=True)
self.assertFalse(m.tracker.done)
pm = zmq.MessageTracker(m)
self.assertFalse(pm.done)
del m
for i in range(10):
if pm.done:
break
time.sleep(0.1)
self.assertTrue(pm.done)
def test_no_tracker(self):
m = zmq.Frame(b'asdf', track=False)
self.assertEqual(m.tracker, None)
m2 = copy.copy(m)
self.assertEqual(m2.tracker, None)
self.assertRaises(ValueError, zmq.MessageTracker, m)
@skip_pypy
def test_multi_tracker(self):
m = zmq.Frame(b'asdf', copy=False, track=True)
m2 = zmq.Frame(b'whoda', copy=False, track=True)
mt = zmq.MessageTracker(m,m2)
self.assertFalse(m.tracker.done)
self.assertFalse(mt.done)
self.assertRaises(zmq.NotDone, mt.wait, 0.1)
del m
time.sleep(0.1)
self.assertRaises(zmq.NotDone, mt.wait, 0.1)
self.assertFalse(mt.done)
del m2
self.assertTrue(mt.wait() is None)
self.assertTrue(mt.done)
def test_buffer_in(self):
"""test using a buffer as input"""
ins = b("§§¶•ªº˜µ¬˚…∆˙åß∂©œ∑´†≈ç√")
m = zmq.Frame(memoryview(ins))
def test_bad_buffer_in(self):
"""test using a bad object"""
self.assertRaises(TypeError, zmq.Frame, 5)
self.assertRaises(TypeError, zmq.Frame, object())
def test_buffer_out(self):
"""receiving buffered output"""
ins = b("§§¶•ªº˜µ¬˚…∆˙åß∂©œ∑´†≈ç√")
m = zmq.Frame(ins)
outb = m.buffer
self.assertTrue(isinstance(outb, memoryview))
self.assert_(outb is m.buffer)
self.assert_(m.buffer is m.buffer)
@skip_pypy
def test_memoryview_shape(self):
"""memoryview shape info"""
if sys.version_info < (3,):
raise SkipTest("only test memoryviews on Python 3")
data = b("§§¶•ªº˜µ¬˚…∆˙åß∂©œ∑´†≈ç√")
n = len(data)
f = zmq.Frame(data)
view1 = f.buffer
self.assertEqual(view1.ndim, 1)
self.assertEqual(view1.shape, (n,))
self.assertEqual(view1.tobytes(), data)
view2 = memoryview(f)
self.assertEqual(view2.ndim, 1)
self.assertEqual(view2.shape, (n,))
self.assertEqual(view2.tobytes(), data)
def test_multisend(self):
"""ensure that a message remains intact after multiple sends"""
a,b = self.create_bound_pair(zmq.PAIR, zmq.PAIR)
s = b"message"
m = zmq.Frame(s)
self.assertEqual(s, m.bytes)
a.send(m, copy=False)
time.sleep(0.1)
self.assertEqual(s, m.bytes)
a.send(m, copy=False)
time.sleep(0.1)
self.assertEqual(s, m.bytes)
a.send(m, copy=True)
time.sleep(0.1)
self.assertEqual(s, m.bytes)
a.send(m, copy=True)
time.sleep(0.1)
self.assertEqual(s, m.bytes)
for i in range(4):
r = b.recv()
self.assertEqual(s,r)
self.assertEqual(s, m.bytes)
def test_memoryview(self):
"""test messages from memoryview"""
major,minor = sys.version_info[:2]
if not (major >= 3 or (major == 2 and minor >= 7)):
raise SkipTest("memoryviews only in python >= 2.7")
s = b'carrotjuice'
v = memoryview(s)
m = zmq.Frame(s)
buf = m.buffer
s2 = buf.tobytes()
self.assertEqual(s2,s)
self.assertEqual(m.bytes,s)
def test_noncopying_recv(self):
"""check for clobbering message buffers"""
null = b'\0'*64
sa,sb = self.create_bound_pair(zmq.PAIR, zmq.PAIR)
for i in range(32):
# try a few times
sb.send(null, copy=False)
m = sa.recv(copy=False)
mb = m.bytes
# buf = memoryview(m)
buf = m.buffer
del m
for i in range(5):
ff=b'\xff'*(40 + i*10)
sb.send(ff, copy=False)
m2 = sa.recv(copy=False)
b = buf.tobytes()
self.assertEqual(b, null)
self.assertEqual(mb, null)
self.assertEqual(m2.bytes, ff)
@skip_pypy
def test_buffer_numpy(self):
"""test non-copying numpy array messages"""
try:
import numpy
from numpy.testing import assert_array_equal
except ImportError:
raise SkipTest("requires numpy")
if sys.version_info < (2,7):
raise SkipTest("requires new-style buffer interface (py >= 2.7)")
rand = numpy.random.randint
shapes = [ rand(2,5) for i in range(5) ]
a,b = self.create_bound_pair(zmq.PAIR, zmq.PAIR)
dtypes = [int, float, '>i4', 'B']
for i in range(1,len(shapes)+1):
shape = shapes[:i]
for dt in dtypes:
A = numpy.empty(shape, dtype=dt)
a.send(A, copy=False)
msg = b.recv(copy=False)
B = numpy.frombuffer(msg, A.dtype).reshape(A.shape)
assert_array_equal(A, B)
A = numpy.empty(shape, dtype=[('a', int), ('b', float), ('c', 'a32')])
A['a'] = 1024
A['b'] = 1e9
A['c'] = 'hello there'
a.send(A, copy=False)
msg = b.recv(copy=False)
B = numpy.frombuffer(msg, A.dtype).reshape(A.shape)
assert_array_equal(A, B)
def test_frame_more(self):
"""test Frame.more attribute"""
frame = zmq.Frame(b"hello")
self.assertFalse(frame.more)
sa,sb = self.create_bound_pair(zmq.PAIR, zmq.PAIR)
sa.send_multipart([b'hi', b'there'])
frame = self.recv(sb, copy=False)
self.assertTrue(frame.more)
if zmq.zmq_version_info()[0] >= 3 and not PYPY:
self.assertTrue(frame.get(zmq.MORE))
frame = self.recv(sb, copy=False)
self.assertFalse(frame.more)
if zmq.zmq_version_info()[0] >= 3 and not PYPY:
self.assertFalse(frame.get(zmq.MORE))
Zerion Mini Shell 1.0