747b753a20
Fixes https://bitbucket.org/eventlet/eventlet/issue/147/semaphoresemaphore-should-support-a
50 lines
1.3 KiB
Python
50 lines
1.3 KiB
Python
import time
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import unittest
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import eventlet
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from eventlet import semaphore
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from tests import LimitedTestCase
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class TestSemaphore(LimitedTestCase):
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def test_bounded(self):
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sem = semaphore.CappedSemaphore(2, limit=3)
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self.assertEqual(sem.acquire(), True)
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self.assertEqual(sem.acquire(), True)
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gt1 = eventlet.spawn(sem.release)
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self.assertEqual(sem.acquire(), True)
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self.assertEqual(-3, sem.balance)
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sem.release()
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sem.release()
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sem.release()
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gt2 = eventlet.spawn(sem.acquire)
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sem.release()
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self.assertEqual(3, sem.balance)
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gt1.wait()
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gt2.wait()
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def test_bounded_with_zero_limit(self):
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sem = semaphore.CappedSemaphore(0, 0)
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gt = eventlet.spawn(sem.acquire)
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sem.release()
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gt.wait()
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def test_non_blocking(self):
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sem = semaphore.Semaphore(0)
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self.assertEqual(sem.acquire(blocking=False), False)
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def test_timeout(self):
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sem = semaphore.Semaphore(0)
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start = time.time()
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self.assertEqual(sem.acquire(timeout=0.1), False)
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self.assertTrue(time.time() - start >= 0.1)
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def test_timeout_non_blocking(self):
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sem = semaphore.Semaphore()
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self.assertRaises(ValueError, sem.acquire, blocking=False, timeout=1)
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if __name__ == '__main__':
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unittest.main()
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