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from __future__ import absolute_import, unicode_literals
from kombu.async.semaphore import LaxBoundedSemaphore
from kombu.tests.case import Case
class test_LaxBoundedSemaphore(Case):
def test_over_release(self):
x = LaxBoundedSemaphore(2)
calls = []
for i in range(1, 21):
x.acquire(calls.append, i)
x.release()
x.acquire(calls.append, 'x')
x.release()
x.acquire(calls.append, 'y')
self.assertEqual(calls, [1, 2, 3, 4])
for i in range(30):
x.release()
self.assertEqual(calls, list(range(1, 21)) + ['x', 'y'])
self.assertEqual(x.value, x.initial_value)
calls[:] = []
for i in range(1, 11):
x.acquire(calls.append, i)
for i in range(1, 11):
x.release()
self.assertEqual(calls, list(range(1, 11)))
calls[:] = []
self.assertEqual(x.value, x.initial_value)
x.acquire(calls.append, 'x')
self.assertEqual(x.value, 1)
x.acquire(calls.append, 'y')
self.assertEqual(x.value, 0)
x.release()
self.assertEqual(x.value, 1)
x.release()
self.assertEqual(x.value, 2)
x.release()
self.assertEqual(x.value, 2)
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