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"""
Test for io_services_test_stubs.py
"""
try:
import asyncio
except ImportError:
asyncio = None
import sys
import threading
import unittest
import tornado.ioloop
import twisted.internet.reactor
from pika.adapters import select_connection
from tests.stubs.io_services_test_stubs import IOServicesTestStubs
# Suppress invalid-name, since our test names are descriptive and quite long
# pylint: disable=C0103
# Suppress missing-docstring to allow test method names to be printed by our the
# test runner
# pylint: disable=C0111
# Tornado does some magic that substitutes the class dynamically
_TORNADO_IO_LOOP = tornado.ioloop.IOLoop()
_TORNADO_IOLOOP_CLASS = _TORNADO_IO_LOOP.__class__
_TORNADO_IO_LOOP.close()
del _TORNADO_IO_LOOP
_SUPPORTED_LOOP_CLASSES = {
select_connection.IOLoop,
_TORNADO_IOLOOP_CLASS,
}
if asyncio is not None:
if sys.platform == 'win32':
asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
_SUPPORTED_LOOP_CLASSES.add(asyncio.get_event_loop().__class__)
class TestStartCalledFromOtherThreadAndWithVaryingNativeLoops(
unittest.TestCase,
IOServicesTestStubs):
_native_loop_classes = None
@classmethod
def setUpClass(cls):
cls._native_loop_classes = set()
# AssertionError: Expected these 3 native I/O loop classes from IOServicesTestStubs:
# {<class 'asyncio.windows_events.ProactorEventLoop'>, <class 'tornado.platform.asyncio.AsyncIOLoop'>, <class 'pika.adapters.select_connection.IOLoop'>}
# but got these 3:
# {<class 'asyncio.windows_events._WindowsSelectorEventLoop'>, <class 'tornado.platform.asyncio.AsyncIOLoop'>, <class 'pika.adapters.select_connection.IOLoop'>}
@classmethod
def tearDownClass(cls):
# Now check against what was made available to us by
# IOServicesTestStubs
if cls._native_loop_classes != _SUPPORTED_LOOP_CLASSES:
raise AssertionError(
'Expected these {} native I/O loop classes from '
'IOServicesTestStubs: {!r}, but got these {}: {!r}'.format(
len(_SUPPORTED_LOOP_CLASSES),
_SUPPORTED_LOOP_CLASSES,
len(cls._native_loop_classes),
cls._native_loop_classes))
def setUp(self):
self._runner_thread_id = threading.current_thread().ident
def start(self):
nbio = self.create_nbio()
native_loop = nbio.get_native_ioloop()
self.assertIsNotNone(self._native_loop)
self.assertIs(native_loop, self._native_loop)
self._native_loop_classes.add(native_loop.__class__)
# Check that we're called from a different thread than the one that
# set up this test.
self.assertNotEqual(threading.current_thread().ident,
self._runner_thread_id)
# And make sure the loop actually works using this rudimentary test
nbio.add_callback_threadsafe(nbio.stop)
nbio.run()
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