Revision 48dabc6a test/ganeti.locking_unittest.py
| b/test/ganeti.locking_unittest.py | ||
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self.threads = [] |
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class TestPipeCondition(_ThreadedTestCase): |
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"""_PipeCondition tests""" |
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def setUp(self): |
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_ThreadedTestCase.setUp(self) |
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self.lock = threading.Lock() |
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self.cond = locking._PipeCondition(self.lock) |
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self.done = Queue.Queue(0) |
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def testAcquireRelease(self): |
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self.assert_(not self.cond._is_owned()) |
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self.assertRaises(RuntimeError, self.cond.wait) |
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self.assertRaises(RuntimeError, self.cond.notifyAll) |
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self.cond.acquire() |
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self.assert_(self.cond._is_owned()) |
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self.cond.notifyAll() |
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self.assert_(self.cond._is_owned()) |
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self.cond.release() |
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self.assert_(not self.cond._is_owned()) |
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self.assertRaises(RuntimeError, self.cond.wait) |
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self.assertRaises(RuntimeError, self.cond.notifyAll) |
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def testNotification(self): |
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def _NotifyAll(): |
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self.cond.acquire() |
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self.cond.notifyAll() |
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self.cond.release() |
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self.cond.acquire() |
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self._addThread(target=_NotifyAll) |
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self.cond.wait() |
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self.assert_(self.cond._is_owned()) |
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self.cond.release() |
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self.assert_(not self.cond._is_owned()) |
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def _TestWait(self, fn): |
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self._addThread(target=fn) |
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self._addThread(target=fn) |
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self._addThread(target=fn) |
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# Wait for threads to be waiting |
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self.assertEqual(self.done.get(True, 1), "A") |
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self.assertEqual(self.done.get(True, 1), "A") |
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self.assertEqual(self.done.get(True, 1), "A") |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.cond.acquire() |
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self.assertEqual(self.cond._nwaiters, 3) |
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# This new thread can"t acquire the lock, and thus call wait, before we |
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# release it |
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self._addThread(target=fn) |
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self.cond.notifyAll() |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.cond.release() |
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# We should now get 3 W and 1 A (for the new thread) in whatever order |
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w = 0 |
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a = 0 |
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for i in range(4): |
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got = self.done.get(True, 1) |
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if got == "W": |
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w += 1 |
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elif got == "A": |
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a += 1 |
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else: |
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self.fail("Got %s on the done queue" % got)
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self.assertEqual(w, 3) |
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self.assertEqual(a, 1) |
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self.cond.acquire() |
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self.cond.notifyAll() |
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self.cond.release() |
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self._waitThreads() |
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self.assertEqual(self.done.get_nowait(), "W") |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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def testBlockingWait(self): |
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def _BlockingWait(): |
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self.cond.acquire() |
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self.done.put("A")
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self.cond.wait() |
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self.cond.release() |
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self.done.put("W")
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self._TestWait(_BlockingWait) |
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def testLongTimeoutWait(self): |
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def _Helper(): |
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self.cond.acquire() |
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self.done.put("A")
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self.cond.wait(15.0) |
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self.cond.release() |
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self.done.put("W")
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self._TestWait(_Helper) |
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def _TimeoutWait(self, timeout, check): |
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self.cond.acquire() |
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self.cond.wait(timeout) |
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self.cond.release() |
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self.done.put(check) |
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def testShortTimeoutWait(self): |
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self._addThread(target=self._TimeoutWait, args=(0.1, "T1")) |
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self._addThread(target=self._TimeoutWait, args=(0.1, "T1")) |
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self._waitThreads() |
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self.assertEqual(self.done.get_nowait(), "T1") |
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self.assertEqual(self.done.get_nowait(), "T1") |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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def testZeroTimeoutWait(self): |
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self._addThread(target=self._TimeoutWait, args=(0, "T0")) |
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self._addThread(target=self._TimeoutWait, args=(0, "T0")) |
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self._addThread(target=self._TimeoutWait, args=(0, "T0")) |
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self._waitThreads() |
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self.assertEqual(self.done.get_nowait(), "T0") |
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self.assertEqual(self.done.get_nowait(), "T0") |
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self.assertEqual(self.done.get_nowait(), "T0") |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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class TestSingleActionPipeCondition(unittest.TestCase): |
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"""_SingleActionPipeCondition tests""" |
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