mirror of https://github.com/python/cpython
1102 lines
34 KiB
Python
1102 lines
34 KiB
Python
"""Tests for lock.py"""
|
|
|
|
import unittest
|
|
from unittest import mock
|
|
import re
|
|
|
|
import asyncio
|
|
from test.test_asyncio import utils as test_utils
|
|
|
|
STR_RGX_REPR = (
|
|
r'^<(?P<class>.*?) object at (?P<address>.*?)'
|
|
r'\[(?P<extras>'
|
|
r'(set|unset|locked|unlocked)(, value:\d)?(, waiters:\d+)?'
|
|
r')\]>\Z'
|
|
)
|
|
RGX_REPR = re.compile(STR_RGX_REPR)
|
|
|
|
|
|
def tearDownModule():
|
|
asyncio.set_event_loop_policy(None)
|
|
|
|
|
|
class LockTests(test_utils.TestCase):
|
|
|
|
def setUp(self):
|
|
super().setUp()
|
|
self.loop = self.new_test_loop()
|
|
|
|
def test_ctor_loop(self):
|
|
loop = mock.Mock()
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=loop)
|
|
self.assertIs(lock._loop, loop)
|
|
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
self.assertIs(lock._loop, self.loop)
|
|
|
|
def test_ctor_noloop(self):
|
|
asyncio.set_event_loop(self.loop)
|
|
lock = asyncio.Lock()
|
|
self.assertIs(lock._loop, self.loop)
|
|
|
|
def test_repr(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
self.assertTrue(repr(lock).endswith('[unlocked]>'))
|
|
self.assertTrue(RGX_REPR.match(repr(lock)))
|
|
|
|
with self.assertWarns(DeprecationWarning):
|
|
@asyncio.coroutine
|
|
def acquire_lock():
|
|
with self.assertWarns(DeprecationWarning):
|
|
yield from lock
|
|
|
|
self.loop.run_until_complete(acquire_lock())
|
|
self.assertTrue(repr(lock).endswith('[locked]>'))
|
|
self.assertTrue(RGX_REPR.match(repr(lock)))
|
|
|
|
def test_lock(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
|
|
|
|
@asyncio.coroutine
|
|
def acquire_lock():
|
|
with self.assertWarns(DeprecationWarning):
|
|
return (yield from lock)
|
|
|
|
res = self.loop.run_until_complete(acquire_lock())
|
|
|
|
self.assertTrue(res)
|
|
self.assertTrue(lock.locked())
|
|
|
|
lock.release()
|
|
self.assertFalse(lock.locked())
|
|
|
|
def test_lock_by_with_statement(self):
|
|
loop = asyncio.new_event_loop() # don't use TestLoop quirks
|
|
self.set_event_loop(loop)
|
|
with self.assertWarns(DeprecationWarning):
|
|
primitives = [
|
|
asyncio.Lock(loop=loop),
|
|
asyncio.Condition(loop=loop),
|
|
asyncio.Semaphore(loop=loop),
|
|
asyncio.BoundedSemaphore(loop=loop),
|
|
]
|
|
|
|
@asyncio.coroutine
|
|
def test(lock):
|
|
yield from asyncio.sleep(0.01)
|
|
self.assertFalse(lock.locked())
|
|
with self.assertWarns(DeprecationWarning):
|
|
with (yield from lock) as _lock:
|
|
self.assertIs(_lock, None)
|
|
self.assertTrue(lock.locked())
|
|
yield from asyncio.sleep(0.01)
|
|
self.assertTrue(lock.locked())
|
|
self.assertFalse(lock.locked())
|
|
|
|
for primitive in primitives:
|
|
loop.run_until_complete(test(primitive))
|
|
self.assertFalse(primitive.locked())
|
|
|
|
def test_acquire(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
result = []
|
|
|
|
self.assertTrue(self.loop.run_until_complete(lock.acquire()))
|
|
|
|
async def c1(result):
|
|
if await lock.acquire():
|
|
result.append(1)
|
|
return True
|
|
|
|
async def c2(result):
|
|
if await lock.acquire():
|
|
result.append(2)
|
|
return True
|
|
|
|
async def c3(result):
|
|
if await lock.acquire():
|
|
result.append(3)
|
|
return True
|
|
|
|
t1 = self.loop.create_task(c1(result))
|
|
t2 = self.loop.create_task(c2(result))
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([], result)
|
|
|
|
lock.release()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1], result)
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1], result)
|
|
|
|
t3 = self.loop.create_task(c3(result))
|
|
|
|
lock.release()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1, 2], result)
|
|
|
|
lock.release()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1, 2, 3], result)
|
|
|
|
self.assertTrue(t1.done())
|
|
self.assertTrue(t1.result())
|
|
self.assertTrue(t2.done())
|
|
self.assertTrue(t2.result())
|
|
self.assertTrue(t3.done())
|
|
self.assertTrue(t3.result())
|
|
|
|
def test_acquire_cancel(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
self.assertTrue(self.loop.run_until_complete(lock.acquire()))
|
|
|
|
task = self.loop.create_task(lock.acquire())
|
|
self.loop.call_soon(task.cancel)
|
|
self.assertRaises(
|
|
asyncio.CancelledError,
|
|
self.loop.run_until_complete, task)
|
|
self.assertFalse(lock._waiters)
|
|
|
|
def test_cancel_race(self):
|
|
# Several tasks:
|
|
# - A acquires the lock
|
|
# - B is blocked in acquire()
|
|
# - C is blocked in acquire()
|
|
#
|
|
# Now, concurrently:
|
|
# - B is cancelled
|
|
# - A releases the lock
|
|
#
|
|
# If B's waiter is marked cancelled but not yet removed from
|
|
# _waiters, A's release() call will crash when trying to set
|
|
# B's waiter; instead, it should move on to C's waiter.
|
|
|
|
# Setup: A has the lock, b and c are waiting.
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
|
|
async def lockit(name, blocker):
|
|
await lock.acquire()
|
|
try:
|
|
if blocker is not None:
|
|
await blocker
|
|
finally:
|
|
lock.release()
|
|
|
|
fa = self.loop.create_future()
|
|
ta = self.loop.create_task(lockit('A', fa))
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertTrue(lock.locked())
|
|
tb = self.loop.create_task(lockit('B', None))
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual(len(lock._waiters), 1)
|
|
tc = self.loop.create_task(lockit('C', None))
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual(len(lock._waiters), 2)
|
|
|
|
# Create the race and check.
|
|
# Without the fix this failed at the last assert.
|
|
fa.set_result(None)
|
|
tb.cancel()
|
|
self.assertTrue(lock._waiters[0].cancelled())
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertFalse(lock.locked())
|
|
self.assertTrue(ta.done())
|
|
self.assertTrue(tb.cancelled())
|
|
self.assertTrue(tc.done())
|
|
|
|
def test_cancel_release_race(self):
|
|
# Issue 32734
|
|
# Acquire 4 locks, cancel second, release first
|
|
# and 2 locks are taken at once.
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
lock_count = 0
|
|
call_count = 0
|
|
|
|
async def lockit():
|
|
nonlocal lock_count
|
|
nonlocal call_count
|
|
call_count += 1
|
|
await lock.acquire()
|
|
lock_count += 1
|
|
|
|
async def lockandtrigger():
|
|
await lock.acquire()
|
|
self.loop.call_soon(trigger)
|
|
|
|
def trigger():
|
|
t1.cancel()
|
|
lock.release()
|
|
|
|
t0 = self.loop.create_task(lockandtrigger())
|
|
t1 = self.loop.create_task(lockit())
|
|
t2 = self.loop.create_task(lockit())
|
|
t3 = self.loop.create_task(lockit())
|
|
|
|
# First loop acquires all
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertTrue(t0.done())
|
|
|
|
# Second loop calls trigger
|
|
test_utils.run_briefly(self.loop)
|
|
# Third loop calls cancellation
|
|
test_utils.run_briefly(self.loop)
|
|
|
|
# Make sure only one lock was taken
|
|
self.assertEqual(lock_count, 1)
|
|
# While 3 calls were made to lockit()
|
|
self.assertEqual(call_count, 3)
|
|
self.assertTrue(t1.cancelled() and t2.done())
|
|
|
|
# Cleanup the task that is stuck on acquire.
|
|
t3.cancel()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertTrue(t3.cancelled())
|
|
|
|
def test_finished_waiter_cancelled(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
|
|
ta = self.loop.create_task(lock.acquire())
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertTrue(lock.locked())
|
|
|
|
tb = self.loop.create_task(lock.acquire())
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual(len(lock._waiters), 1)
|
|
|
|
# Create a second waiter, wake up the first, and cancel it.
|
|
# Without the fix, the second was not woken up.
|
|
tc = self.loop.create_task(lock.acquire())
|
|
lock.release()
|
|
tb.cancel()
|
|
test_utils.run_briefly(self.loop)
|
|
|
|
self.assertTrue(lock.locked())
|
|
self.assertTrue(ta.done())
|
|
self.assertTrue(tb.cancelled())
|
|
|
|
def test_release_not_acquired(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
|
|
self.assertRaises(RuntimeError, lock.release)
|
|
|
|
def test_release_no_waiters(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
self.loop.run_until_complete(lock.acquire())
|
|
self.assertTrue(lock.locked())
|
|
|
|
lock.release()
|
|
self.assertFalse(lock.locked())
|
|
|
|
def test_context_manager(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
|
|
@asyncio.coroutine
|
|
def acquire_lock():
|
|
with self.assertWarns(DeprecationWarning):
|
|
return (yield from lock)
|
|
|
|
with self.loop.run_until_complete(acquire_lock()):
|
|
self.assertTrue(lock.locked())
|
|
|
|
self.assertFalse(lock.locked())
|
|
|
|
def test_context_manager_cant_reuse(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
|
|
@asyncio.coroutine
|
|
def acquire_lock():
|
|
with self.assertWarns(DeprecationWarning):
|
|
return (yield from lock)
|
|
|
|
# This spells "yield from lock" outside a generator.
|
|
cm = self.loop.run_until_complete(acquire_lock())
|
|
with cm:
|
|
self.assertTrue(lock.locked())
|
|
|
|
self.assertFalse(lock.locked())
|
|
|
|
with self.assertRaises(AttributeError):
|
|
with cm:
|
|
pass
|
|
|
|
def test_context_manager_no_yield(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
|
|
try:
|
|
with lock:
|
|
self.fail('RuntimeError is not raised in with expression')
|
|
except RuntimeError as err:
|
|
self.assertEqual(
|
|
str(err),
|
|
'"yield from" should be used as context manager expression')
|
|
|
|
self.assertFalse(lock.locked())
|
|
|
|
|
|
class EventTests(test_utils.TestCase):
|
|
|
|
def setUp(self):
|
|
super().setUp()
|
|
self.loop = self.new_test_loop()
|
|
|
|
def test_ctor_loop(self):
|
|
loop = mock.Mock()
|
|
with self.assertWarns(DeprecationWarning):
|
|
ev = asyncio.Event(loop=loop)
|
|
self.assertIs(ev._loop, loop)
|
|
|
|
with self.assertWarns(DeprecationWarning):
|
|
ev = asyncio.Event(loop=self.loop)
|
|
self.assertIs(ev._loop, self.loop)
|
|
|
|
def test_ctor_noloop(self):
|
|
asyncio.set_event_loop(self.loop)
|
|
ev = asyncio.Event()
|
|
self.assertIs(ev._loop, self.loop)
|
|
|
|
def test_repr(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
ev = asyncio.Event(loop=self.loop)
|
|
self.assertTrue(repr(ev).endswith('[unset]>'))
|
|
match = RGX_REPR.match(repr(ev))
|
|
self.assertEqual(match.group('extras'), 'unset')
|
|
|
|
ev.set()
|
|
self.assertTrue(repr(ev).endswith('[set]>'))
|
|
self.assertTrue(RGX_REPR.match(repr(ev)))
|
|
|
|
ev._waiters.append(mock.Mock())
|
|
self.assertTrue('waiters:1' in repr(ev))
|
|
self.assertTrue(RGX_REPR.match(repr(ev)))
|
|
|
|
def test_wait(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
ev = asyncio.Event(loop=self.loop)
|
|
self.assertFalse(ev.is_set())
|
|
|
|
result = []
|
|
|
|
async def c1(result):
|
|
if await ev.wait():
|
|
result.append(1)
|
|
|
|
async def c2(result):
|
|
if await ev.wait():
|
|
result.append(2)
|
|
|
|
async def c3(result):
|
|
if await ev.wait():
|
|
result.append(3)
|
|
|
|
t1 = self.loop.create_task(c1(result))
|
|
t2 = self.loop.create_task(c2(result))
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([], result)
|
|
|
|
t3 = self.loop.create_task(c3(result))
|
|
|
|
ev.set()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([3, 1, 2], result)
|
|
|
|
self.assertTrue(t1.done())
|
|
self.assertIsNone(t1.result())
|
|
self.assertTrue(t2.done())
|
|
self.assertIsNone(t2.result())
|
|
self.assertTrue(t3.done())
|
|
self.assertIsNone(t3.result())
|
|
|
|
def test_wait_on_set(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
ev = asyncio.Event(loop=self.loop)
|
|
ev.set()
|
|
|
|
res = self.loop.run_until_complete(ev.wait())
|
|
self.assertTrue(res)
|
|
|
|
def test_wait_cancel(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
ev = asyncio.Event(loop=self.loop)
|
|
|
|
wait = self.loop.create_task(ev.wait())
|
|
self.loop.call_soon(wait.cancel)
|
|
self.assertRaises(
|
|
asyncio.CancelledError,
|
|
self.loop.run_until_complete, wait)
|
|
self.assertFalse(ev._waiters)
|
|
|
|
def test_clear(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
ev = asyncio.Event(loop=self.loop)
|
|
self.assertFalse(ev.is_set())
|
|
|
|
ev.set()
|
|
self.assertTrue(ev.is_set())
|
|
|
|
ev.clear()
|
|
self.assertFalse(ev.is_set())
|
|
|
|
def test_clear_with_waiters(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
ev = asyncio.Event(loop=self.loop)
|
|
result = []
|
|
|
|
async def c1(result):
|
|
if await ev.wait():
|
|
result.append(1)
|
|
return True
|
|
|
|
t = self.loop.create_task(c1(result))
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([], result)
|
|
|
|
ev.set()
|
|
ev.clear()
|
|
self.assertFalse(ev.is_set())
|
|
|
|
ev.set()
|
|
ev.set()
|
|
self.assertEqual(1, len(ev._waiters))
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1], result)
|
|
self.assertEqual(0, len(ev._waiters))
|
|
|
|
self.assertTrue(t.done())
|
|
self.assertTrue(t.result())
|
|
|
|
|
|
class ConditionTests(test_utils.TestCase):
|
|
|
|
def setUp(self):
|
|
super().setUp()
|
|
self.loop = self.new_test_loop()
|
|
|
|
def test_ctor_loop(self):
|
|
loop = mock.Mock()
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=loop)
|
|
self.assertIs(cond._loop, loop)
|
|
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
self.assertIs(cond._loop, self.loop)
|
|
|
|
def test_ctor_noloop(self):
|
|
asyncio.set_event_loop(self.loop)
|
|
cond = asyncio.Condition()
|
|
self.assertIs(cond._loop, self.loop)
|
|
|
|
def test_wait(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
result = []
|
|
|
|
async def c1(result):
|
|
await cond.acquire()
|
|
if await cond.wait():
|
|
result.append(1)
|
|
return True
|
|
|
|
async def c2(result):
|
|
await cond.acquire()
|
|
if await cond.wait():
|
|
result.append(2)
|
|
return True
|
|
|
|
async def c3(result):
|
|
await cond.acquire()
|
|
if await cond.wait():
|
|
result.append(3)
|
|
return True
|
|
|
|
t1 = self.loop.create_task(c1(result))
|
|
t2 = self.loop.create_task(c2(result))
|
|
t3 = self.loop.create_task(c3(result))
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([], result)
|
|
self.assertFalse(cond.locked())
|
|
|
|
self.assertTrue(self.loop.run_until_complete(cond.acquire()))
|
|
cond.notify()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([], result)
|
|
self.assertTrue(cond.locked())
|
|
|
|
cond.release()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1], result)
|
|
self.assertTrue(cond.locked())
|
|
|
|
cond.notify(2)
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1], result)
|
|
self.assertTrue(cond.locked())
|
|
|
|
cond.release()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1, 2], result)
|
|
self.assertTrue(cond.locked())
|
|
|
|
cond.release()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1, 2, 3], result)
|
|
self.assertTrue(cond.locked())
|
|
|
|
self.assertTrue(t1.done())
|
|
self.assertTrue(t1.result())
|
|
self.assertTrue(t2.done())
|
|
self.assertTrue(t2.result())
|
|
self.assertTrue(t3.done())
|
|
self.assertTrue(t3.result())
|
|
|
|
def test_wait_cancel(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
self.loop.run_until_complete(cond.acquire())
|
|
|
|
wait = self.loop.create_task(cond.wait())
|
|
self.loop.call_soon(wait.cancel)
|
|
self.assertRaises(
|
|
asyncio.CancelledError,
|
|
self.loop.run_until_complete, wait)
|
|
self.assertFalse(cond._waiters)
|
|
self.assertTrue(cond.locked())
|
|
|
|
def test_wait_cancel_contested(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
|
|
self.loop.run_until_complete(cond.acquire())
|
|
self.assertTrue(cond.locked())
|
|
|
|
wait_task = self.loop.create_task(cond.wait())
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertFalse(cond.locked())
|
|
|
|
# Notify, but contest the lock before cancelling
|
|
self.loop.run_until_complete(cond.acquire())
|
|
self.assertTrue(cond.locked())
|
|
cond.notify()
|
|
self.loop.call_soon(wait_task.cancel)
|
|
self.loop.call_soon(cond.release)
|
|
|
|
try:
|
|
self.loop.run_until_complete(wait_task)
|
|
except asyncio.CancelledError:
|
|
# Should not happen, since no cancellation points
|
|
pass
|
|
|
|
self.assertTrue(cond.locked())
|
|
|
|
def test_wait_cancel_after_notify(self):
|
|
# See bpo-32841
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
waited = False
|
|
|
|
async def wait_on_cond():
|
|
nonlocal waited
|
|
async with cond:
|
|
waited = True # Make sure this area was reached
|
|
await cond.wait()
|
|
|
|
waiter = asyncio.ensure_future(wait_on_cond(), loop=self.loop)
|
|
test_utils.run_briefly(self.loop) # Start waiting
|
|
|
|
self.loop.run_until_complete(cond.acquire())
|
|
cond.notify()
|
|
test_utils.run_briefly(self.loop) # Get to acquire()
|
|
waiter.cancel()
|
|
test_utils.run_briefly(self.loop) # Activate cancellation
|
|
cond.release()
|
|
test_utils.run_briefly(self.loop) # Cancellation should occur
|
|
|
|
self.assertTrue(waiter.cancelled())
|
|
self.assertTrue(waited)
|
|
|
|
def test_wait_unacquired(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
self.assertRaises(
|
|
RuntimeError,
|
|
self.loop.run_until_complete, cond.wait())
|
|
|
|
def test_wait_for(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
presult = False
|
|
|
|
def predicate():
|
|
return presult
|
|
|
|
result = []
|
|
|
|
async def c1(result):
|
|
await cond.acquire()
|
|
if await cond.wait_for(predicate):
|
|
result.append(1)
|
|
cond.release()
|
|
return True
|
|
|
|
t = self.loop.create_task(c1(result))
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([], result)
|
|
|
|
self.loop.run_until_complete(cond.acquire())
|
|
cond.notify()
|
|
cond.release()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([], result)
|
|
|
|
presult = True
|
|
self.loop.run_until_complete(cond.acquire())
|
|
cond.notify()
|
|
cond.release()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1], result)
|
|
|
|
self.assertTrue(t.done())
|
|
self.assertTrue(t.result())
|
|
|
|
def test_wait_for_unacquired(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
|
|
# predicate can return true immediately
|
|
res = self.loop.run_until_complete(cond.wait_for(lambda: [1, 2, 3]))
|
|
self.assertEqual([1, 2, 3], res)
|
|
|
|
self.assertRaises(
|
|
RuntimeError,
|
|
self.loop.run_until_complete,
|
|
cond.wait_for(lambda: False))
|
|
|
|
def test_notify(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
result = []
|
|
|
|
async def c1(result):
|
|
await cond.acquire()
|
|
if await cond.wait():
|
|
result.append(1)
|
|
cond.release()
|
|
return True
|
|
|
|
async def c2(result):
|
|
await cond.acquire()
|
|
if await cond.wait():
|
|
result.append(2)
|
|
cond.release()
|
|
return True
|
|
|
|
async def c3(result):
|
|
await cond.acquire()
|
|
if await cond.wait():
|
|
result.append(3)
|
|
cond.release()
|
|
return True
|
|
|
|
t1 = self.loop.create_task(c1(result))
|
|
t2 = self.loop.create_task(c2(result))
|
|
t3 = self.loop.create_task(c3(result))
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([], result)
|
|
|
|
self.loop.run_until_complete(cond.acquire())
|
|
cond.notify(1)
|
|
cond.release()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1], result)
|
|
|
|
self.loop.run_until_complete(cond.acquire())
|
|
cond.notify(1)
|
|
cond.notify(2048)
|
|
cond.release()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1, 2, 3], result)
|
|
|
|
self.assertTrue(t1.done())
|
|
self.assertTrue(t1.result())
|
|
self.assertTrue(t2.done())
|
|
self.assertTrue(t2.result())
|
|
self.assertTrue(t3.done())
|
|
self.assertTrue(t3.result())
|
|
|
|
def test_notify_all(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
|
|
result = []
|
|
|
|
async def c1(result):
|
|
await cond.acquire()
|
|
if await cond.wait():
|
|
result.append(1)
|
|
cond.release()
|
|
return True
|
|
|
|
async def c2(result):
|
|
await cond.acquire()
|
|
if await cond.wait():
|
|
result.append(2)
|
|
cond.release()
|
|
return True
|
|
|
|
t1 = self.loop.create_task(c1(result))
|
|
t2 = self.loop.create_task(c2(result))
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([], result)
|
|
|
|
self.loop.run_until_complete(cond.acquire())
|
|
cond.notify_all()
|
|
cond.release()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1, 2], result)
|
|
|
|
self.assertTrue(t1.done())
|
|
self.assertTrue(t1.result())
|
|
self.assertTrue(t2.done())
|
|
self.assertTrue(t2.result())
|
|
|
|
def test_notify_unacquired(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
self.assertRaises(RuntimeError, cond.notify)
|
|
|
|
def test_notify_all_unacquired(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
self.assertRaises(RuntimeError, cond.notify_all)
|
|
|
|
def test_repr(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
self.assertTrue('unlocked' in repr(cond))
|
|
self.assertTrue(RGX_REPR.match(repr(cond)))
|
|
|
|
self.loop.run_until_complete(cond.acquire())
|
|
self.assertTrue('locked' in repr(cond))
|
|
|
|
cond._waiters.append(mock.Mock())
|
|
self.assertTrue('waiters:1' in repr(cond))
|
|
self.assertTrue(RGX_REPR.match(repr(cond)))
|
|
|
|
cond._waiters.append(mock.Mock())
|
|
self.assertTrue('waiters:2' in repr(cond))
|
|
self.assertTrue(RGX_REPR.match(repr(cond)))
|
|
|
|
def test_context_manager(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
|
|
with self.assertWarns(DeprecationWarning):
|
|
@asyncio.coroutine
|
|
def acquire_cond():
|
|
with self.assertWarns(DeprecationWarning):
|
|
return (yield from cond)
|
|
|
|
with self.loop.run_until_complete(acquire_cond()):
|
|
self.assertTrue(cond.locked())
|
|
|
|
self.assertFalse(cond.locked())
|
|
|
|
def test_context_manager_no_yield(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
cond = asyncio.Condition(loop=self.loop)
|
|
|
|
try:
|
|
with cond:
|
|
self.fail('RuntimeError is not raised in with expression')
|
|
except RuntimeError as err:
|
|
self.assertEqual(
|
|
str(err),
|
|
'"yield from" should be used as context manager expression')
|
|
|
|
self.assertFalse(cond.locked())
|
|
|
|
def test_explicit_lock(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
cond = asyncio.Condition(lock, loop=self.loop)
|
|
|
|
self.assertIs(cond._lock, lock)
|
|
self.assertIs(cond._loop, lock._loop)
|
|
|
|
def test_ambiguous_loops(self):
|
|
loop = self.new_test_loop()
|
|
self.addCleanup(loop.close)
|
|
with self.assertWarns(DeprecationWarning):
|
|
lock = asyncio.Lock(loop=self.loop)
|
|
with self.assertRaises(ValueError):
|
|
asyncio.Condition(lock, loop=loop)
|
|
|
|
def test_timeout_in_block(self):
|
|
loop = asyncio.new_event_loop()
|
|
self.addCleanup(loop.close)
|
|
|
|
async def task_timeout():
|
|
condition = asyncio.Condition(loop=loop)
|
|
async with condition:
|
|
with self.assertRaises(asyncio.TimeoutError):
|
|
await asyncio.wait_for(condition.wait(), timeout=0.5)
|
|
|
|
with self.assertWarns(DeprecationWarning):
|
|
loop.run_until_complete(task_timeout())
|
|
|
|
|
|
class SemaphoreTests(test_utils.TestCase):
|
|
|
|
def setUp(self):
|
|
super().setUp()
|
|
self.loop = self.new_test_loop()
|
|
|
|
def test_ctor_loop(self):
|
|
loop = mock.Mock()
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(loop=loop)
|
|
self.assertIs(sem._loop, loop)
|
|
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(loop=self.loop)
|
|
self.assertIs(sem._loop, self.loop)
|
|
|
|
def test_ctor_noloop(self):
|
|
asyncio.set_event_loop(self.loop)
|
|
sem = asyncio.Semaphore()
|
|
self.assertIs(sem._loop, self.loop)
|
|
|
|
def test_initial_value_zero(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(0, loop=self.loop)
|
|
self.assertTrue(sem.locked())
|
|
|
|
def test_repr(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(loop=self.loop)
|
|
self.assertTrue(repr(sem).endswith('[unlocked, value:1]>'))
|
|
self.assertTrue(RGX_REPR.match(repr(sem)))
|
|
|
|
self.loop.run_until_complete(sem.acquire())
|
|
self.assertTrue(repr(sem).endswith('[locked]>'))
|
|
self.assertTrue('waiters' not in repr(sem))
|
|
self.assertTrue(RGX_REPR.match(repr(sem)))
|
|
|
|
sem._waiters.append(mock.Mock())
|
|
self.assertTrue('waiters:1' in repr(sem))
|
|
self.assertTrue(RGX_REPR.match(repr(sem)))
|
|
|
|
sem._waiters.append(mock.Mock())
|
|
self.assertTrue('waiters:2' in repr(sem))
|
|
self.assertTrue(RGX_REPR.match(repr(sem)))
|
|
|
|
def test_semaphore(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(loop=self.loop)
|
|
self.assertEqual(1, sem._value)
|
|
|
|
with self.assertWarns(DeprecationWarning):
|
|
@asyncio.coroutine
|
|
def acquire_lock():
|
|
with self.assertWarns(DeprecationWarning):
|
|
return (yield from sem)
|
|
|
|
res = self.loop.run_until_complete(acquire_lock())
|
|
|
|
self.assertTrue(res)
|
|
self.assertTrue(sem.locked())
|
|
self.assertEqual(0, sem._value)
|
|
|
|
sem.release()
|
|
self.assertFalse(sem.locked())
|
|
self.assertEqual(1, sem._value)
|
|
|
|
def test_semaphore_value(self):
|
|
self.assertRaises(ValueError, asyncio.Semaphore, -1)
|
|
|
|
def test_acquire(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(3, loop=self.loop)
|
|
result = []
|
|
|
|
self.assertTrue(self.loop.run_until_complete(sem.acquire()))
|
|
self.assertTrue(self.loop.run_until_complete(sem.acquire()))
|
|
self.assertFalse(sem.locked())
|
|
|
|
async def c1(result):
|
|
await sem.acquire()
|
|
result.append(1)
|
|
return True
|
|
|
|
async def c2(result):
|
|
await sem.acquire()
|
|
result.append(2)
|
|
return True
|
|
|
|
async def c3(result):
|
|
await sem.acquire()
|
|
result.append(3)
|
|
return True
|
|
|
|
async def c4(result):
|
|
await sem.acquire()
|
|
result.append(4)
|
|
return True
|
|
|
|
t1 = self.loop.create_task(c1(result))
|
|
t2 = self.loop.create_task(c2(result))
|
|
t3 = self.loop.create_task(c3(result))
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual([1], result)
|
|
self.assertTrue(sem.locked())
|
|
self.assertEqual(2, len(sem._waiters))
|
|
self.assertEqual(0, sem._value)
|
|
|
|
t4 = self.loop.create_task(c4(result))
|
|
|
|
sem.release()
|
|
sem.release()
|
|
self.assertEqual(2, sem._value)
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual(0, sem._value)
|
|
self.assertEqual(3, len(result))
|
|
self.assertTrue(sem.locked())
|
|
self.assertEqual(1, len(sem._waiters))
|
|
self.assertEqual(0, sem._value)
|
|
|
|
self.assertTrue(t1.done())
|
|
self.assertTrue(t1.result())
|
|
race_tasks = [t2, t3, t4]
|
|
done_tasks = [t for t in race_tasks if t.done() and t.result()]
|
|
self.assertTrue(2, len(done_tasks))
|
|
|
|
# cleanup locked semaphore
|
|
sem.release()
|
|
self.loop.run_until_complete(asyncio.gather(*race_tasks))
|
|
|
|
def test_acquire_cancel(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(loop=self.loop)
|
|
self.loop.run_until_complete(sem.acquire())
|
|
|
|
acquire = self.loop.create_task(sem.acquire())
|
|
self.loop.call_soon(acquire.cancel)
|
|
self.assertRaises(
|
|
asyncio.CancelledError,
|
|
self.loop.run_until_complete, acquire)
|
|
self.assertTrue((not sem._waiters) or
|
|
all(waiter.done() for waiter in sem._waiters))
|
|
|
|
def test_acquire_cancel_before_awoken(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(value=0, loop=self.loop)
|
|
|
|
t1 = self.loop.create_task(sem.acquire())
|
|
t2 = self.loop.create_task(sem.acquire())
|
|
t3 = self.loop.create_task(sem.acquire())
|
|
t4 = self.loop.create_task(sem.acquire())
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
|
|
sem.release()
|
|
t1.cancel()
|
|
t2.cancel()
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
num_done = sum(t.done() for t in [t3, t4])
|
|
self.assertEqual(num_done, 1)
|
|
|
|
t3.cancel()
|
|
t4.cancel()
|
|
test_utils.run_briefly(self.loop)
|
|
|
|
def test_acquire_hang(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(value=0, loop=self.loop)
|
|
|
|
t1 = self.loop.create_task(sem.acquire())
|
|
t2 = self.loop.create_task(sem.acquire())
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
|
|
sem.release()
|
|
t1.cancel()
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertTrue(sem.locked())
|
|
|
|
def test_release_not_acquired(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.BoundedSemaphore(loop=self.loop)
|
|
|
|
self.assertRaises(ValueError, sem.release)
|
|
|
|
def test_release_no_waiters(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(loop=self.loop)
|
|
self.loop.run_until_complete(sem.acquire())
|
|
self.assertTrue(sem.locked())
|
|
|
|
sem.release()
|
|
self.assertFalse(sem.locked())
|
|
|
|
def test_context_manager(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(2, loop=self.loop)
|
|
|
|
@asyncio.coroutine
|
|
def acquire_lock():
|
|
with self.assertWarns(DeprecationWarning):
|
|
return (yield from sem)
|
|
|
|
with self.loop.run_until_complete(acquire_lock()):
|
|
self.assertFalse(sem.locked())
|
|
self.assertEqual(1, sem._value)
|
|
|
|
with self.loop.run_until_complete(acquire_lock()):
|
|
self.assertTrue(sem.locked())
|
|
|
|
self.assertEqual(2, sem._value)
|
|
|
|
def test_context_manager_no_yield(self):
|
|
with self.assertWarns(DeprecationWarning):
|
|
sem = asyncio.Semaphore(2, loop=self.loop)
|
|
|
|
try:
|
|
with sem:
|
|
self.fail('RuntimeError is not raised in with expression')
|
|
except RuntimeError as err:
|
|
self.assertEqual(
|
|
str(err),
|
|
'"yield from" should be used as context manager expression')
|
|
|
|
self.assertEqual(2, sem._value)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|