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from __future__ import with_statement
import sys
from time import time, sleep
import random
import weakref
import greentest
from gevent.threadpool import ThreadPool
import gevent
import six
class TestCase(greentest.TestCase):
def cleanup(self):
pool = getattr(self, 'pool', None)
if pool is not None:
pool.kill()
del self.pool
class PoolBasicTests(TestCase):
def test_execute_async(self):
self.pool = pool = ThreadPool(2)
r = []
first = pool.spawn(r.append, 1)
first.get()
self.assertEqual(r, [1])
gevent.sleep(0)
pool.apply_async(r.append, (2, ))
self.assertEqual(r, [1])
pool.apply_async(r.append, (3, ))
self.assertEqual(r, [1])
pool.apply_async(r.append, (4, ))
self.assertEqual(r, [1])
gevent.sleep(0.01)
self.assertEqual(sorted(r), [1, 2, 3, 4])
def test_apply(self):
self.pool = pool = ThreadPool(1)
result = pool.apply(lambda a: ('foo', a), (1, ))
self.assertEqual(result, ('foo', 1))
def test_init_valueerror(self):
self.switch_expected = False
self.assertRaises(ValueError, ThreadPool, -1)
self.pool = None
#
# tests from standard library test/test_multiprocessing.py
class TimingWrapper(object):
def __init__(self, func):
self.func = func
self.elapsed = None
def __call__(self, *args, **kwds):
t = time()
try:
return self.func(*args, **kwds)
finally:
self.elapsed = time() - t
def sqr(x, wait=0.0):
sleep(wait)
return x * x
def sqr_random_sleep(x):
sleep(random.random() * 0.1)
return x * x
TIMEOUT1, TIMEOUT2, TIMEOUT3 = 0.082, 0.035, 0.14
class TestPool(TestCase):
__timeout__ = 5
size = 1
def setUp(self):
greentest.TestCase.setUp(self)
self.pool = ThreadPool(self.size)
def test_apply(self):
papply = self.pool.apply
self.assertEqual(papply(sqr, (5,)), sqr(5))
self.assertEqual(papply(sqr, (), {'x': 3}), sqr(x=3))
def test_map(self):
pmap = self.pool.map
self.assertEqual(pmap(sqr, range(10)), list(map(sqr, range(10))))
self.assertEqual(pmap(sqr, range(100)), list(map(sqr, range(100))))
def test_async(self):
res = self.pool.apply_async(sqr, (7, TIMEOUT1,))
get = TimingWrapper(res.get)
self.assertEqual(get(), 49)
self.assertAlmostEqual(get.elapsed, TIMEOUT1, 1)
def test_async_callback(self):
result = []
res = self.pool.apply_async(sqr, (7, TIMEOUT1,), callback=lambda x: result.append(x))
get = TimingWrapper(res.get)
self.assertEqual(get(), 49)
self.assertAlmostEqual(get.elapsed, TIMEOUT1, 1)
gevent.sleep(0) # let's the callback run
assert result == [49], result
def test_async_timeout(self):
res = self.pool.apply_async(sqr, (6, TIMEOUT2 + 0.2))
get = TimingWrapper(res.get)
self.assertRaises(gevent.Timeout, get, timeout=TIMEOUT2)
self.assertAlmostEqual(get.elapsed, TIMEOUT2, 1)
self.pool.join()
def test_imap(self):
it = self.pool.imap(sqr, range(10))
self.assertEqual(list(it), list(map(sqr, range(10))))
it = self.pool.imap(sqr, range(10))
for i in range(10):
self.assertEqual(six.advance_iterator(it), i * i)
self.assertRaises(StopIteration, lambda: six.advance_iterator(it))
it = self.pool.imap(sqr, range(1000))
for i in range(1000):
self.assertEqual(six.advance_iterator(it), i * i)
self.assertRaises(StopIteration, lambda: six.advance_iterator(it))
def test_imap_random(self):
it = self.pool.imap(sqr_random_sleep, range(10))
self.assertEqual(list(it), list(map(sqr, range(10))))
def test_imap_unordered(self):
it = self.pool.imap_unordered(sqr, range(1000))
self.assertEqual(sorted(it), list(map(sqr, range(1000))))
it = self.pool.imap_unordered(sqr, range(1000))
self.assertEqual(sorted(it), list(map(sqr, range(1000))))
def test_imap_unordered_random(self):
it = self.pool.imap_unordered(sqr_random_sleep, range(10))
self.assertEqual(sorted(it), list(map(sqr, range(10))))
def test_terminate(self):
size = self.size or 10
result = self.pool.map_async(sleep, [0.1] * (size * 2))
gevent.sleep(0.1)
kill = TimingWrapper(self.pool.kill)
kill()
assert kill.elapsed < 0.1 * self.size + 0.5, kill.elapsed
result.join()
def sleep(self, x):
sleep(float(x) / 10.)
return str(x)
def test_imap_unordered_sleep(self):
# testing that imap_unordered returns items in competion order
result = list(self.pool.imap_unordered(self.sleep, [10, 1, 2]))
if self.pool.size == 1:
expected = ['10', '1', '2']
else:
expected = ['1', '2', '10']
self.assertEqual(result, expected)
class TestPool2(TestPool):
size = 2
class TestPool3(TestPool):
size = 3
class TestPool10(TestPool):
size = 10
__timeout__ = 5
# class TestJoinSleep(greentest.GenericGetTestCase):
#
# def wait(self, timeout):
# pool = ThreadPool(1)
# pool.spawn(gevent.sleep, 10)
# pool.join(timeout=timeout)
#
#
# class TestJoinSleep_raise_error(greentest.GenericWaitTestCase):
#
# def wait(self, timeout):
# pool = ThreadPool(1)
# g = pool.spawn(gevent.sleep, 10)
# pool.join(timeout=timeout, raise_error=True)
class TestJoinEmpty(TestCase):
switch_expected = False
def test(self):
self.pool = ThreadPool(1)
self.pool.join()
class TestSpawn(TestCase):
switch_expected = True
def test(self):
self.pool = pool = ThreadPool(1)
self.assertEqual(len(pool), 0)
log = []
sleep_n_log = lambda item, seconds: [sleep(seconds), log.append(item)]
pool.spawn(sleep_n_log, 'a', 0.1)
self.assertEqual(len(pool), 1)
pool.spawn(sleep_n_log, 'b', 0.1)
# even though the pool is of size 1, it can contain 2 items
# since we allow +1 for better throughput
self.assertEqual(len(pool), 2)
gevent.sleep(0.15)
self.assertEqual(log, ['a'])
self.assertEqual(len(pool), 1)
gevent.sleep(0.15)
self.assertEqual(log, ['a', 'b'])
self.assertEqual(len(pool), 0)
def error_iter():
yield 1
yield 2
raise greentest.ExpectedException
class TestErrorInIterator(TestCase):
error_fatal = False
def test(self):
self.pool = ThreadPool(3)
self.assertRaises(greentest.ExpectedException, self.pool.map, lambda x: None, error_iter())
gevent.sleep(0.001)
def test_unordered(self):
self.pool = ThreadPool(3)
def unordered():
return list(self.pool.imap_unordered(lambda x: None, error_iter()))
self.assertRaises(greentest.ExpectedException, unordered)
gevent.sleep(0.001)
class TestMaxsize(TestCase):
def test_inc(self):
self.pool = ThreadPool(0)
done = []
gevent.spawn(self.pool.spawn, done.append, 1)
gevent.spawn_later(0.0001, self.pool.spawn, done.append, 2)
gevent.sleep(0.01)
self.assertEqual(done, [])
self.pool.maxsize = 1
gevent.sleep(0.01)
self.assertEqual(done, [1, 2])
def test_setzero(self):
pool = self.pool = ThreadPool(3)
pool.spawn(sleep, 0.1)
pool.spawn(sleep, 0.2)
pool.spawn(sleep, 0.3)
gevent.sleep(0.2)
self.assertEqual(pool.size, 3)
pool.maxsize = 0
gevent.sleep(0.2)
self.assertEqual(pool.size, 0)
class TestSize(TestCase):
def test(self):
pool = self.pool = ThreadPool(2)
self.assertEqual(pool.size, 0)
pool.size = 1
self.assertEqual(pool.size, 1)
pool.size = 2
self.assertEqual(pool.size, 2)
pool.size = 1
self.assertEqual(pool.size, 1)
def set_neg():
pool.size = -1
self.assertRaises(ValueError, set_neg)
def set_too_big():
pool.size = 3
self.assertRaises(ValueError, set_too_big)
pool.size = 0
self.assertEqual(pool.size, 0)
pool.size = 2
self.assertEqual(pool.size, 2)
class TestRef(TestCase):
def test(self):
pool = self.pool = ThreadPool(2)
refs = []
obj = SomeClass()
obj.refs = refs
func = obj.func
del obj
with greentest.disabled_gc():
# we do this:
# result = func(Object(), kwarg1=Object())
# but in a thread pool and see that arguments', result's and func's references are not leaked
result = pool.apply(func, (Object(), ), {'kwarg1': Object()})
assert isinstance(result, Object), repr(result)
gevent.sleep(0.1) # XXX should not be needed
refs.append(weakref.ref(func))
del func, result
for index, r in enumerate(refs):
assert r() is None, (index, r(), sys.getrefcount(r()), refs)
assert len(refs) == 4, refs
class Object(object):
pass
class SomeClass(object):
def func(self, arg1, kwarg1=None):
result = Object()
self.refs.extend([weakref.ref(x) for x in [arg1, kwarg1, result]])
return result
def func():
pass
class TestRefCount(TestCase):
def test(self):
pool = ThreadPool(1)
pool.spawn(func)
gevent.sleep(0)
pool.kill()
if __name__ == '__main__':
greentest.main()
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