397 lines
12 KiB
Python
397 lines
12 KiB
Python
|
|
import errno
|
|
import os
|
|
import select
|
|
import socket
|
|
import sys
|
|
import time
|
|
|
|
import unittest2
|
|
|
|
import mitogen.core
|
|
import mitogen.parent
|
|
|
|
import testlib
|
|
|
|
|
|
class SockMixin(object):
|
|
def tearDown(self):
|
|
self.close_socks()
|
|
super(SockMixin, self).tearDown()
|
|
|
|
def setUp(self):
|
|
super(SockMixin, self).setUp()
|
|
self._setup_socks()
|
|
|
|
def _setup_socks(self):
|
|
# "left" and "right" side of two socket pairs. We use sockets instead
|
|
# of pipes since the same process can manipulate transmit/receive
|
|
# buffers on both sides (bidirectional IO), making it easier to test
|
|
# combinations of readability/writeability on the one side of a single
|
|
# file object.
|
|
self.l1_sock, self.r1_sock = socket.socketpair()
|
|
self.l1 = self.l1_sock.fileno()
|
|
self.r1 = self.r1_sock.fileno()
|
|
|
|
self.l2_sock, self.r2_sock = socket.socketpair()
|
|
self.l2 = self.l2_sock.fileno()
|
|
self.r2 = self.r2_sock.fileno()
|
|
for fd in self.l1, self.r1, self.l2, self.r2:
|
|
mitogen.core.set_nonblock(fd)
|
|
|
|
def fill(self, fd):
|
|
"""Make `fd` unwriteable."""
|
|
while True:
|
|
try:
|
|
os.write(fd, mitogen.core.b('x')*4096)
|
|
except OSError:
|
|
e = sys.exc_info()[1]
|
|
if e.args[0] == errno.EAGAIN:
|
|
return
|
|
raise
|
|
|
|
def drain(self, fd):
|
|
"""Make `fd` unreadable."""
|
|
while True:
|
|
try:
|
|
if not os.read(fd, 4096):
|
|
return
|
|
except OSError:
|
|
e = sys.exc_info()[1]
|
|
if e.args[0] == errno.EAGAIN:
|
|
return
|
|
raise
|
|
|
|
def close_socks(self):
|
|
for sock in self.l1_sock, self.r1_sock, self.l2_sock, self.r2_sock:
|
|
sock.close()
|
|
|
|
|
|
class PollerMixin(object):
|
|
klass = None
|
|
|
|
def setUp(self):
|
|
super(PollerMixin, self).setUp()
|
|
self.p = self.klass()
|
|
|
|
def tearDown(self):
|
|
self.p.close()
|
|
super(PollerMixin, self).tearDown()
|
|
|
|
|
|
class ReceiveStateMixin(PollerMixin, SockMixin):
|
|
def test_start_receive_adds_reader(self):
|
|
self.p.start_receive(self.l1)
|
|
self.assertEquals([(self.l1, self.l1)], self.p.readers)
|
|
self.assertEquals([], self.p.writers)
|
|
|
|
def test_start_receive_adds_reader_data(self):
|
|
data = object()
|
|
self.p.start_receive(self.l1, data=data)
|
|
self.assertEquals([(self.l1, data)], self.p.readers)
|
|
self.assertEquals([], self.p.writers)
|
|
|
|
def test_stop_receive(self):
|
|
self.p.start_receive(self.l1)
|
|
self.p.stop_receive(self.l1)
|
|
self.assertEquals([], self.p.readers)
|
|
self.assertEquals([], self.p.writers)
|
|
|
|
def test_stop_receive_dup(self):
|
|
self.p.start_receive(self.l1)
|
|
self.p.stop_receive(self.l1)
|
|
self.assertEquals([], self.p.readers)
|
|
self.assertEquals([], self.p.writers)
|
|
self.p.stop_receive(self.l1)
|
|
self.assertEquals([], self.p.readers)
|
|
self.assertEquals([], self.p.writers)
|
|
|
|
def test_stop_receive_noexist(self):
|
|
p = self.klass()
|
|
p.stop_receive(123) # should not fail
|
|
self.assertEquals([], p.readers)
|
|
self.assertEquals([], self.p.writers)
|
|
|
|
|
|
class TransmitStateMixin(PollerMixin, SockMixin):
|
|
def test_start_transmit_adds_writer(self):
|
|
self.p.start_transmit(self.r1)
|
|
self.assertEquals([], self.p.readers)
|
|
self.assertEquals([(self.r1, self.r1)], self.p.writers)
|
|
|
|
def test_start_transmit_adds_writer_data(self):
|
|
data = object()
|
|
self.p.start_transmit(self.r1, data=data)
|
|
self.assertEquals([], self.p.readers)
|
|
self.assertEquals([(self.r1, data)], self.p.writers)
|
|
|
|
def test_stop_transmit(self):
|
|
self.p.start_transmit(self.r1)
|
|
self.p.stop_transmit(self.r1)
|
|
self.assertEquals([], self.p.readers)
|
|
self.assertEquals([], self.p.writers)
|
|
|
|
def test_stop_transmit_dup(self):
|
|
self.p.start_transmit(self.r1)
|
|
self.p.stop_transmit(self.r1)
|
|
self.assertEquals([], self.p.readers)
|
|
self.assertEquals([], self.p.writers)
|
|
self.p.stop_transmit(self.r1)
|
|
self.assertEquals([], self.p.readers)
|
|
self.assertEquals([], self.p.writers)
|
|
|
|
def test_stop_transmit_noexist(self):
|
|
p = self.klass()
|
|
p.stop_receive(123) # should not fail
|
|
self.assertEquals([], p.readers)
|
|
self.assertEquals([], self.p.writers)
|
|
|
|
|
|
class CloseMixin(PollerMixin):
|
|
def test_single_close(self):
|
|
self.p.close()
|
|
|
|
def test_double_close(self):
|
|
self.p.close()
|
|
self.p.close()
|
|
|
|
|
|
class PollMixin(PollerMixin):
|
|
def test_empty_zero_timeout(self):
|
|
t0 = time.time()
|
|
self.assertEquals([], list(self.p.poll(0)))
|
|
self.assertTrue((time.time() - t0) < .1) # vaguely reasonable
|
|
|
|
def test_empty_small_timeout(self):
|
|
t0 = time.time()
|
|
self.assertEquals([], list(self.p.poll(.2)))
|
|
self.assertTrue((time.time() - t0) >= .2)
|
|
|
|
|
|
class ReadableMixin(PollerMixin, SockMixin):
|
|
def test_unreadable(self):
|
|
self.p.start_receive(self.l1)
|
|
self.assertEquals([], list(self.p.poll(0)))
|
|
|
|
def test_readable_before_add(self):
|
|
self.fill(self.r1)
|
|
self.p.start_receive(self.l1)
|
|
self.assertEquals([self.l1], list(self.p.poll(0)))
|
|
|
|
def test_readable_after_add(self):
|
|
self.p.start_receive(self.l1)
|
|
self.fill(self.r1)
|
|
self.assertEquals([self.l1], list(self.p.poll(0)))
|
|
|
|
def test_readable_then_unreadable(self):
|
|
self.fill(self.r1)
|
|
self.p.start_receive(self.l1)
|
|
self.assertEquals([self.l1], list(self.p.poll(0)))
|
|
self.drain(self.l1)
|
|
self.assertEquals([], list(self.p.poll(0)))
|
|
|
|
def test_readable_data(self):
|
|
data = object()
|
|
self.fill(self.r1)
|
|
self.p.start_receive(self.l1, data=data)
|
|
self.assertEquals([data], list(self.p.poll(0)))
|
|
|
|
def test_double_readable_data(self):
|
|
data1 = object()
|
|
data2 = object()
|
|
self.fill(self.r1)
|
|
self.p.start_receive(self.l1, data=data1)
|
|
self.fill(self.r2)
|
|
self.p.start_receive(self.l2, data=data2)
|
|
self.assertEquals(set([data1, data2]), set(self.p.poll(0)))
|
|
|
|
|
|
class WriteableMixin(PollerMixin, SockMixin):
|
|
def test_writeable(self):
|
|
self.p.start_transmit(self.r1)
|
|
self.assertEquals([self.r1], list(self.p.poll(0)))
|
|
|
|
def test_writeable_data(self):
|
|
data = object()
|
|
self.p.start_transmit(self.r1, data=data)
|
|
self.assertEquals([data], list(self.p.poll(0)))
|
|
|
|
def test_unwriteable_before_add(self):
|
|
self.fill(self.r1)
|
|
self.p.start_transmit(self.r1)
|
|
self.assertEquals([], list(self.p.poll(0)))
|
|
|
|
def test_unwriteable_after_add(self):
|
|
self.p.start_transmit(self.r1)
|
|
self.fill(self.r1)
|
|
self.assertEquals([], list(self.p.poll(0)))
|
|
|
|
def test_unwriteable_then_writeable(self):
|
|
self.fill(self.r1)
|
|
self.p.start_transmit(self.r1)
|
|
self.assertEquals([], list(self.p.poll(0)))
|
|
self.drain(self.l1)
|
|
self.assertEquals([self.r1], list(self.p.poll(0)))
|
|
|
|
def test_double_unwriteable_then_Writeable(self):
|
|
self.fill(self.r1)
|
|
self.p.start_transmit(self.r1)
|
|
|
|
self.fill(self.r2)
|
|
self.p.start_transmit(self.r2)
|
|
|
|
self.assertEquals([], list(self.p.poll(0)))
|
|
|
|
self.drain(self.l1)
|
|
self.assertEquals([self.r1], list(self.p.poll(0)))
|
|
|
|
self.drain(self.l2)
|
|
self.assertEquals(set([self.r1, self.r2]), set(self.p.poll(0)))
|
|
|
|
|
|
class MutateDuringYieldMixin(PollerMixin, SockMixin):
|
|
# verify behaviour when poller contents is modified in the middle of
|
|
# poll() output generation.
|
|
|
|
def test_one_readable_removed_before_yield(self):
|
|
self.fill(self.l1)
|
|
self.p.start_receive(self.r1)
|
|
p = self.p.poll(0)
|
|
self.p.stop_receive(self.r1)
|
|
self.assertEquals([], list(p))
|
|
|
|
def test_one_writeable_removed_before_yield(self):
|
|
self.p.start_transmit(self.r1)
|
|
p = self.p.poll(0)
|
|
self.p.stop_transmit(self.r1)
|
|
self.assertEquals([], list(p))
|
|
|
|
def test_one_readable_readded_before_yield(self):
|
|
# fd removed, closed, another fd opened, gets same fd number, re-added.
|
|
# event fires for wrong underlying object.
|
|
self.fill(self.l1)
|
|
self.p.start_receive(self.r1)
|
|
p = self.p.poll(0)
|
|
self.p.stop_receive(self.r1)
|
|
self.p.start_receive(self.r1)
|
|
self.assertEquals([], list(p))
|
|
|
|
def test_one_readable_readded_during_yield(self):
|
|
self.fill(self.l1)
|
|
self.p.start_receive(self.r1)
|
|
|
|
self.fill(self.l2)
|
|
self.p.start_receive(self.r2)
|
|
|
|
p = self.p.poll(0)
|
|
|
|
# figure out which one is consumed and which is still to-read.
|
|
consumed = next(p)
|
|
ready = (self.r1, self.r2)[consumed == self.r1]
|
|
|
|
# now remove and re-add the one that hasn't been read yet.
|
|
self.p.stop_receive(ready)
|
|
self.p.start_receive(ready)
|
|
|
|
# the start_receive() may be for a totally new underlying file object,
|
|
# the live loop iteration must not yield any buffered readiness event.
|
|
self.assertEquals([], list(p))
|
|
|
|
|
|
class FileClosedMixin(PollerMixin, SockMixin):
|
|
# Verify behaviour when a registered file object is closed in various
|
|
# scenarios, without first calling stop_receive()/stop_transmit().
|
|
|
|
def test_writeable_then_closed(self):
|
|
self.p.start_transmit(self.r1)
|
|
self.assertEquals([self.r1], list(self.p.poll(0)))
|
|
self.close_socks()
|
|
try:
|
|
self.assertEquals([], list(self.p.poll(0)))
|
|
except select.error:
|
|
# a crash is also reasonable here.
|
|
pass
|
|
|
|
def test_writeable_closed_before_yield(self):
|
|
self.p.start_transmit(self.r1)
|
|
p = self.p.poll(0)
|
|
self.close_socks()
|
|
try:
|
|
self.assertEquals([], list(p))
|
|
except select.error:
|
|
# a crash is also reasonable here.
|
|
pass
|
|
|
|
def test_readable_then_closed(self):
|
|
self.fill(self.l1)
|
|
self.p.start_receive(self.r1)
|
|
self.assertEquals([self.r1], list(self.p.poll(0)))
|
|
self.close_socks()
|
|
try:
|
|
self.assertEquals([], list(self.p.poll(0)))
|
|
except select.error:
|
|
# a crash is also reasonable here.
|
|
pass
|
|
|
|
def test_readable_closed_before_yield(self):
|
|
self.fill(self.l1)
|
|
self.p.start_receive(self.r1)
|
|
p = self.p.poll(0)
|
|
self.close_socks()
|
|
try:
|
|
self.assertEquals([], list(p))
|
|
except select.error:
|
|
# a crash is also reasonable here.
|
|
pass
|
|
|
|
|
|
class DistinctDataMixin(PollerMixin, SockMixin):
|
|
# Verify different data is yielded for the same FD according to the event
|
|
# being raised.
|
|
|
|
def test_one_distinct(self):
|
|
rdata = object()
|
|
wdata = object()
|
|
self.p.start_receive(self.r1, data=rdata)
|
|
self.p.start_transmit(self.r1, data=wdata)
|
|
|
|
self.assertEquals([wdata], list(self.p.poll(0)))
|
|
self.fill(self.l1) # r1 is now readable and writeable.
|
|
self.assertEquals(set([rdata, wdata]), set(self.p.poll(0)))
|
|
|
|
|
|
class AllMixin(ReceiveStateMixin,
|
|
TransmitStateMixin,
|
|
ReadableMixin,
|
|
WriteableMixin,
|
|
MutateDuringYieldMixin,
|
|
FileClosedMixin,
|
|
DistinctDataMixin,
|
|
PollMixin,
|
|
CloseMixin):
|
|
"""
|
|
Helper to avoid cutpasting mixin names below.
|
|
"""
|
|
|
|
|
|
@unittest2.skipIf(condition=not hasattr(select, 'select'),
|
|
reason='select.select() not supported')
|
|
class SelectTest(AllMixin, testlib.TestCase):
|
|
klass = mitogen.core.Poller
|
|
|
|
|
|
@unittest2.skipIf(condition=not hasattr(select, 'kqueue'),
|
|
reason='select.kqueue() not supported')
|
|
class KqueueTest(AllMixin, testlib.TestCase):
|
|
klass = mitogen.parent.KqueuePoller
|
|
|
|
|
|
@unittest2.skipIf(condition=not hasattr(select, 'epoll'),
|
|
reason='select.epoll() not supported')
|
|
class EpollTest(AllMixin, testlib.TestCase):
|
|
klass = mitogen.parent.EpollPoller
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest2.main()
|