mirror of
https://github.com/python/cpython.git
synced 2025-10-30 21:21:22 +00:00
626 lines
17 KiB
Python
626 lines
17 KiB
Python
"""Tests for queues.py"""
|
|
|
|
import unittest
|
|
from unittest import mock
|
|
|
|
import asyncio
|
|
from asyncio import test_utils
|
|
|
|
|
|
class _QueueTestBase(test_utils.TestCase):
|
|
|
|
def setUp(self):
|
|
super().setUp()
|
|
self.loop = self.new_test_loop()
|
|
|
|
|
|
class QueueBasicTests(_QueueTestBase):
|
|
|
|
def _test_repr_or_str(self, fn, expect_id):
|
|
"""Test Queue's repr or str.
|
|
|
|
fn is repr or str. expect_id is True if we expect the Queue's id to
|
|
appear in fn(Queue()).
|
|
"""
|
|
def gen():
|
|
when = yield
|
|
self.assertAlmostEqual(0.1, when)
|
|
when = yield 0.1
|
|
self.assertAlmostEqual(0.2, when)
|
|
yield 0.1
|
|
|
|
loop = self.new_test_loop(gen)
|
|
|
|
q = asyncio.Queue(loop=loop)
|
|
self.assertTrue(fn(q).startswith('<Queue'), fn(q))
|
|
id_is_present = hex(id(q)) in fn(q)
|
|
self.assertEqual(expect_id, id_is_present)
|
|
|
|
@asyncio.coroutine
|
|
def add_getter():
|
|
q = asyncio.Queue(loop=loop)
|
|
# Start a task that waits to get.
|
|
asyncio.Task(q.get(), loop=loop)
|
|
# Let it start waiting.
|
|
yield from asyncio.sleep(0.1, loop=loop)
|
|
self.assertTrue('_getters[1]' in fn(q))
|
|
# resume q.get coroutine to finish generator
|
|
q.put_nowait(0)
|
|
|
|
loop.run_until_complete(add_getter())
|
|
|
|
@asyncio.coroutine
|
|
def add_putter():
|
|
q = asyncio.Queue(maxsize=1, loop=loop)
|
|
q.put_nowait(1)
|
|
# Start a task that waits to put.
|
|
asyncio.Task(q.put(2), loop=loop)
|
|
# Let it start waiting.
|
|
yield from asyncio.sleep(0.1, loop=loop)
|
|
self.assertTrue('_putters[1]' in fn(q))
|
|
# resume q.put coroutine to finish generator
|
|
q.get_nowait()
|
|
|
|
loop.run_until_complete(add_putter())
|
|
|
|
q = asyncio.Queue(loop=loop)
|
|
q.put_nowait(1)
|
|
self.assertTrue('_queue=[1]' in fn(q))
|
|
|
|
def test_ctor_loop(self):
|
|
loop = mock.Mock()
|
|
q = asyncio.Queue(loop=loop)
|
|
self.assertIs(q._loop, loop)
|
|
|
|
q = asyncio.Queue(loop=self.loop)
|
|
self.assertIs(q._loop, self.loop)
|
|
|
|
def test_ctor_noloop(self):
|
|
asyncio.set_event_loop(self.loop)
|
|
q = asyncio.Queue()
|
|
self.assertIs(q._loop, self.loop)
|
|
|
|
def test_repr(self):
|
|
self._test_repr_or_str(repr, True)
|
|
|
|
def test_str(self):
|
|
self._test_repr_or_str(str, False)
|
|
|
|
def test_empty(self):
|
|
q = asyncio.Queue(loop=self.loop)
|
|
self.assertTrue(q.empty())
|
|
q.put_nowait(1)
|
|
self.assertFalse(q.empty())
|
|
self.assertEqual(1, q.get_nowait())
|
|
self.assertTrue(q.empty())
|
|
|
|
def test_full(self):
|
|
q = asyncio.Queue(loop=self.loop)
|
|
self.assertFalse(q.full())
|
|
|
|
q = asyncio.Queue(maxsize=1, loop=self.loop)
|
|
q.put_nowait(1)
|
|
self.assertTrue(q.full())
|
|
|
|
def test_order(self):
|
|
q = asyncio.Queue(loop=self.loop)
|
|
for i in [1, 3, 2]:
|
|
q.put_nowait(i)
|
|
|
|
items = [q.get_nowait() for _ in range(3)]
|
|
self.assertEqual([1, 3, 2], items)
|
|
|
|
def test_maxsize(self):
|
|
|
|
def gen():
|
|
when = yield
|
|
self.assertAlmostEqual(0.01, when)
|
|
when = yield 0.01
|
|
self.assertAlmostEqual(0.02, when)
|
|
yield 0.01
|
|
|
|
loop = self.new_test_loop(gen)
|
|
|
|
q = asyncio.Queue(maxsize=2, loop=loop)
|
|
self.assertEqual(2, q.maxsize)
|
|
have_been_put = []
|
|
|
|
@asyncio.coroutine
|
|
def putter():
|
|
for i in range(3):
|
|
yield from q.put(i)
|
|
have_been_put.append(i)
|
|
return True
|
|
|
|
@asyncio.coroutine
|
|
def test():
|
|
t = asyncio.Task(putter(), loop=loop)
|
|
yield from asyncio.sleep(0.01, loop=loop)
|
|
|
|
# The putter is blocked after putting two items.
|
|
self.assertEqual([0, 1], have_been_put)
|
|
self.assertEqual(0, q.get_nowait())
|
|
|
|
# Let the putter resume and put last item.
|
|
yield from asyncio.sleep(0.01, loop=loop)
|
|
self.assertEqual([0, 1, 2], have_been_put)
|
|
self.assertEqual(1, q.get_nowait())
|
|
self.assertEqual(2, q.get_nowait())
|
|
|
|
self.assertTrue(t.done())
|
|
self.assertTrue(t.result())
|
|
|
|
loop.run_until_complete(test())
|
|
self.assertAlmostEqual(0.02, loop.time())
|
|
|
|
|
|
class QueueGetTests(_QueueTestBase):
|
|
|
|
def test_blocking_get(self):
|
|
q = asyncio.Queue(loop=self.loop)
|
|
q.put_nowait(1)
|
|
|
|
@asyncio.coroutine
|
|
def queue_get():
|
|
return (yield from q.get())
|
|
|
|
res = self.loop.run_until_complete(queue_get())
|
|
self.assertEqual(1, res)
|
|
|
|
def test_get_with_putters(self):
|
|
q = asyncio.Queue(1, loop=self.loop)
|
|
q.put_nowait(1)
|
|
|
|
waiter = asyncio.Future(loop=self.loop)
|
|
q._putters.append(waiter)
|
|
|
|
res = self.loop.run_until_complete(q.get())
|
|
self.assertEqual(1, res)
|
|
self.assertTrue(waiter.done())
|
|
self.assertIsNone(waiter.result())
|
|
|
|
def test_blocking_get_wait(self):
|
|
|
|
def gen():
|
|
when = yield
|
|
self.assertAlmostEqual(0.01, when)
|
|
yield 0.01
|
|
|
|
loop = self.new_test_loop(gen)
|
|
|
|
q = asyncio.Queue(loop=loop)
|
|
started = asyncio.Event(loop=loop)
|
|
finished = False
|
|
|
|
@asyncio.coroutine
|
|
def queue_get():
|
|
nonlocal finished
|
|
started.set()
|
|
res = yield from q.get()
|
|
finished = True
|
|
return res
|
|
|
|
@asyncio.coroutine
|
|
def queue_put():
|
|
loop.call_later(0.01, q.put_nowait, 1)
|
|
queue_get_task = asyncio.Task(queue_get(), loop=loop)
|
|
yield from started.wait()
|
|
self.assertFalse(finished)
|
|
res = yield from queue_get_task
|
|
self.assertTrue(finished)
|
|
return res
|
|
|
|
res = loop.run_until_complete(queue_put())
|
|
self.assertEqual(1, res)
|
|
self.assertAlmostEqual(0.01, loop.time())
|
|
|
|
def test_nonblocking_get(self):
|
|
q = asyncio.Queue(loop=self.loop)
|
|
q.put_nowait(1)
|
|
self.assertEqual(1, q.get_nowait())
|
|
|
|
def test_nonblocking_get_exception(self):
|
|
q = asyncio.Queue(loop=self.loop)
|
|
self.assertRaises(asyncio.QueueEmpty, q.get_nowait)
|
|
|
|
def test_get_cancelled(self):
|
|
|
|
def gen():
|
|
when = yield
|
|
self.assertAlmostEqual(0.01, when)
|
|
when = yield 0.01
|
|
self.assertAlmostEqual(0.061, when)
|
|
yield 0.05
|
|
|
|
loop = self.new_test_loop(gen)
|
|
|
|
q = asyncio.Queue(loop=loop)
|
|
|
|
@asyncio.coroutine
|
|
def queue_get():
|
|
return (yield from asyncio.wait_for(q.get(), 0.051, loop=loop))
|
|
|
|
@asyncio.coroutine
|
|
def test():
|
|
get_task = asyncio.Task(queue_get(), loop=loop)
|
|
yield from asyncio.sleep(0.01, loop=loop) # let the task start
|
|
q.put_nowait(1)
|
|
return (yield from get_task)
|
|
|
|
self.assertEqual(1, loop.run_until_complete(test()))
|
|
self.assertAlmostEqual(0.06, loop.time())
|
|
|
|
def test_get_cancelled_race(self):
|
|
q = asyncio.Queue(loop=self.loop)
|
|
|
|
t1 = asyncio.Task(q.get(), loop=self.loop)
|
|
t2 = asyncio.Task(q.get(), loop=self.loop)
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
t1.cancel()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertTrue(t1.done())
|
|
q.put_nowait('a')
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual(t2.result(), 'a')
|
|
|
|
def test_get_with_waiting_putters(self):
|
|
q = asyncio.Queue(loop=self.loop, maxsize=1)
|
|
asyncio.Task(q.put('a'), loop=self.loop)
|
|
asyncio.Task(q.put('b'), loop=self.loop)
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual(self.loop.run_until_complete(q.get()), 'a')
|
|
self.assertEqual(self.loop.run_until_complete(q.get()), 'b')
|
|
|
|
def test_why_are_getters_waiting(self):
|
|
# From issue #268.
|
|
|
|
@asyncio.coroutine
|
|
def consumer(queue, num_expected):
|
|
for _ in range(num_expected):
|
|
yield from queue.get()
|
|
|
|
@asyncio.coroutine
|
|
def producer(queue, num_items):
|
|
for i in range(num_items):
|
|
yield from queue.put(i)
|
|
|
|
queue_size = 1
|
|
producer_num_items = 5
|
|
q = asyncio.Queue(queue_size, loop=self.loop)
|
|
|
|
self.loop.run_until_complete(
|
|
asyncio.gather(producer(q, producer_num_items),
|
|
consumer(q, producer_num_items),
|
|
loop=self.loop),
|
|
)
|
|
|
|
|
|
class QueuePutTests(_QueueTestBase):
|
|
|
|
def test_blocking_put(self):
|
|
q = asyncio.Queue(loop=self.loop)
|
|
|
|
@asyncio.coroutine
|
|
def queue_put():
|
|
# No maxsize, won't block.
|
|
yield from q.put(1)
|
|
|
|
self.loop.run_until_complete(queue_put())
|
|
|
|
def test_blocking_put_wait(self):
|
|
|
|
def gen():
|
|
when = yield
|
|
self.assertAlmostEqual(0.01, when)
|
|
yield 0.01
|
|
|
|
loop = self.new_test_loop(gen)
|
|
|
|
q = asyncio.Queue(maxsize=1, loop=loop)
|
|
started = asyncio.Event(loop=loop)
|
|
finished = False
|
|
|
|
@asyncio.coroutine
|
|
def queue_put():
|
|
nonlocal finished
|
|
started.set()
|
|
yield from q.put(1)
|
|
yield from q.put(2)
|
|
finished = True
|
|
|
|
@asyncio.coroutine
|
|
def queue_get():
|
|
loop.call_later(0.01, q.get_nowait)
|
|
queue_put_task = asyncio.Task(queue_put(), loop=loop)
|
|
yield from started.wait()
|
|
self.assertFalse(finished)
|
|
yield from queue_put_task
|
|
self.assertTrue(finished)
|
|
|
|
loop.run_until_complete(queue_get())
|
|
self.assertAlmostEqual(0.01, loop.time())
|
|
|
|
def test_nonblocking_put(self):
|
|
q = asyncio.Queue(loop=self.loop)
|
|
q.put_nowait(1)
|
|
self.assertEqual(1, q.get_nowait())
|
|
|
|
def test_get_cancel_drop_one_pending_reader(self):
|
|
def gen():
|
|
yield 0.01
|
|
yield 0.1
|
|
|
|
loop = self.new_test_loop(gen)
|
|
|
|
q = asyncio.Queue(loop=loop)
|
|
|
|
reader = loop.create_task(q.get())
|
|
|
|
loop.run_until_complete(asyncio.sleep(0.01, loop=loop))
|
|
|
|
q.put_nowait(1)
|
|
q.put_nowait(2)
|
|
reader.cancel()
|
|
|
|
try:
|
|
loop.run_until_complete(reader)
|
|
except asyncio.CancelledError:
|
|
# try again
|
|
reader = loop.create_task(q.get())
|
|
loop.run_until_complete(reader)
|
|
|
|
result = reader.result()
|
|
# if we get 2, it means 1 got dropped!
|
|
self.assertEqual(1, result)
|
|
|
|
def test_get_cancel_drop_many_pending_readers(self):
|
|
def gen():
|
|
yield 0.01
|
|
yield 0.1
|
|
|
|
loop = self.new_test_loop(gen)
|
|
loop.set_debug(True)
|
|
|
|
q = asyncio.Queue(loop=loop)
|
|
|
|
reader1 = loop.create_task(q.get())
|
|
reader2 = loop.create_task(q.get())
|
|
reader3 = loop.create_task(q.get())
|
|
|
|
loop.run_until_complete(asyncio.sleep(0.01, loop=loop))
|
|
|
|
q.put_nowait(1)
|
|
q.put_nowait(2)
|
|
reader1.cancel()
|
|
|
|
try:
|
|
loop.run_until_complete(reader1)
|
|
except asyncio.CancelledError:
|
|
pass
|
|
|
|
loop.run_until_complete(reader3)
|
|
|
|
# It is undefined in which order concurrent readers receive results.
|
|
self.assertEqual({reader2.result(), reader3.result()}, {1, 2})
|
|
|
|
def test_put_cancel_drop(self):
|
|
|
|
def gen():
|
|
yield 0.01
|
|
yield 0.1
|
|
|
|
loop = self.new_test_loop(gen)
|
|
q = asyncio.Queue(1, loop=loop)
|
|
|
|
q.put_nowait(1)
|
|
|
|
# putting a second item in the queue has to block (qsize=1)
|
|
writer = loop.create_task(q.put(2))
|
|
loop.run_until_complete(asyncio.sleep(0.01, loop=loop))
|
|
|
|
value1 = q.get_nowait()
|
|
self.assertEqual(value1, 1)
|
|
|
|
writer.cancel()
|
|
try:
|
|
loop.run_until_complete(writer)
|
|
except asyncio.CancelledError:
|
|
# try again
|
|
writer = loop.create_task(q.put(2))
|
|
loop.run_until_complete(writer)
|
|
|
|
value2 = q.get_nowait()
|
|
self.assertEqual(value2, 2)
|
|
self.assertEqual(q.qsize(), 0)
|
|
|
|
def test_nonblocking_put_exception(self):
|
|
q = asyncio.Queue(maxsize=1, loop=self.loop)
|
|
q.put_nowait(1)
|
|
self.assertRaises(asyncio.QueueFull, q.put_nowait, 2)
|
|
|
|
def test_float_maxsize(self):
|
|
q = asyncio.Queue(maxsize=1.3, loop=self.loop)
|
|
q.put_nowait(1)
|
|
q.put_nowait(2)
|
|
self.assertTrue(q.full())
|
|
self.assertRaises(asyncio.QueueFull, q.put_nowait, 3)
|
|
|
|
q = asyncio.Queue(maxsize=1.3, loop=self.loop)
|
|
@asyncio.coroutine
|
|
def queue_put():
|
|
yield from q.put(1)
|
|
yield from q.put(2)
|
|
self.assertTrue(q.full())
|
|
self.loop.run_until_complete(queue_put())
|
|
|
|
def test_put_cancelled(self):
|
|
q = asyncio.Queue(loop=self.loop)
|
|
|
|
@asyncio.coroutine
|
|
def queue_put():
|
|
yield from q.put(1)
|
|
return True
|
|
|
|
@asyncio.coroutine
|
|
def test():
|
|
return (yield from q.get())
|
|
|
|
t = asyncio.Task(queue_put(), loop=self.loop)
|
|
self.assertEqual(1, self.loop.run_until_complete(test()))
|
|
self.assertTrue(t.done())
|
|
self.assertTrue(t.result())
|
|
|
|
def test_put_cancelled_race(self):
|
|
q = asyncio.Queue(loop=self.loop, maxsize=1)
|
|
|
|
put_a = asyncio.Task(q.put('a'), loop=self.loop)
|
|
put_b = asyncio.Task(q.put('b'), loop=self.loop)
|
|
put_c = asyncio.Task(q.put('X'), loop=self.loop)
|
|
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertTrue(put_a.done())
|
|
self.assertFalse(put_b.done())
|
|
|
|
put_c.cancel()
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertTrue(put_c.done())
|
|
self.assertEqual(q.get_nowait(), 'a')
|
|
test_utils.run_briefly(self.loop)
|
|
self.assertEqual(q.get_nowait(), 'b')
|
|
|
|
self.loop.run_until_complete(put_b)
|
|
|
|
def test_put_with_waiting_getters(self):
|
|
q = asyncio.Queue(loop=self.loop)
|
|
t = asyncio.Task(q.get(), loop=self.loop)
|
|
test_utils.run_briefly(self.loop)
|
|
self.loop.run_until_complete(q.put('a'))
|
|
self.assertEqual(self.loop.run_until_complete(t), 'a')
|
|
|
|
def test_why_are_putters_waiting(self):
|
|
# From issue #265.
|
|
|
|
queue = asyncio.Queue(2, loop=self.loop)
|
|
|
|
@asyncio.coroutine
|
|
def putter(item):
|
|
yield from queue.put(item)
|
|
|
|
@asyncio.coroutine
|
|
def getter():
|
|
yield
|
|
num = queue.qsize()
|
|
for _ in range(num):
|
|
item = queue.get_nowait()
|
|
|
|
t0 = putter(0)
|
|
t1 = putter(1)
|
|
t2 = putter(2)
|
|
t3 = putter(3)
|
|
self.loop.run_until_complete(
|
|
asyncio.gather(getter(), t0, t1, t2, t3, loop=self.loop))
|
|
|
|
|
|
class LifoQueueTests(_QueueTestBase):
|
|
|
|
def test_order(self):
|
|
q = asyncio.LifoQueue(loop=self.loop)
|
|
for i in [1, 3, 2]:
|
|
q.put_nowait(i)
|
|
|
|
items = [q.get_nowait() for _ in range(3)]
|
|
self.assertEqual([2, 3, 1], items)
|
|
|
|
|
|
class PriorityQueueTests(_QueueTestBase):
|
|
|
|
def test_order(self):
|
|
q = asyncio.PriorityQueue(loop=self.loop)
|
|
for i in [1, 3, 2]:
|
|
q.put_nowait(i)
|
|
|
|
items = [q.get_nowait() for _ in range(3)]
|
|
self.assertEqual([1, 2, 3], items)
|
|
|
|
|
|
class _QueueJoinTestMixin:
|
|
|
|
q_class = None
|
|
|
|
def test_task_done_underflow(self):
|
|
q = self.q_class(loop=self.loop)
|
|
self.assertRaises(ValueError, q.task_done)
|
|
|
|
def test_task_done(self):
|
|
q = self.q_class(loop=self.loop)
|
|
for i in range(100):
|
|
q.put_nowait(i)
|
|
|
|
accumulator = 0
|
|
|
|
# Two workers get items from the queue and call task_done after each.
|
|
# Join the queue and assert all items have been processed.
|
|
running = True
|
|
|
|
@asyncio.coroutine
|
|
def worker():
|
|
nonlocal accumulator
|
|
|
|
while running:
|
|
item = yield from q.get()
|
|
accumulator += item
|
|
q.task_done()
|
|
|
|
@asyncio.coroutine
|
|
def test():
|
|
tasks = [asyncio.Task(worker(), loop=self.loop)
|
|
for index in range(2)]
|
|
|
|
yield from q.join()
|
|
return tasks
|
|
|
|
tasks = self.loop.run_until_complete(test())
|
|
self.assertEqual(sum(range(100)), accumulator)
|
|
|
|
# close running generators
|
|
running = False
|
|
for i in range(len(tasks)):
|
|
q.put_nowait(0)
|
|
self.loop.run_until_complete(asyncio.wait(tasks, loop=self.loop))
|
|
|
|
def test_join_empty_queue(self):
|
|
q = self.q_class(loop=self.loop)
|
|
|
|
# Test that a queue join()s successfully, and before anything else
|
|
# (done twice for insurance).
|
|
|
|
@asyncio.coroutine
|
|
def join():
|
|
yield from q.join()
|
|
yield from q.join()
|
|
|
|
self.loop.run_until_complete(join())
|
|
|
|
def test_format(self):
|
|
q = self.q_class(loop=self.loop)
|
|
self.assertEqual(q._format(), 'maxsize=0')
|
|
|
|
q._unfinished_tasks = 2
|
|
self.assertEqual(q._format(), 'maxsize=0 tasks=2')
|
|
|
|
|
|
class QueueJoinTests(_QueueJoinTestMixin, _QueueTestBase):
|
|
q_class = asyncio.Queue
|
|
|
|
|
|
class LifoQueueJoinTests(_QueueJoinTestMixin, _QueueTestBase):
|
|
q_class = asyncio.LifoQueue
|
|
|
|
|
|
class PriorityQueueJoinTests(_QueueJoinTestMixin, _QueueTestBase):
|
|
q_class = asyncio.PriorityQueue
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|