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mitogen/tests/latch_test.py

213 lines
5.4 KiB
Python

import sys
import threading
import unittest2
import mitogen.core
import testlib
class EmptyTest(testlib.TestCase):
klass = mitogen.core.Latch
def test_is_empty(self):
latch = self.klass()
self.assertTrue(latch.empty())
def test_is_nonempty(self):
latch = self.klass()
latch.put(None)
self.assertTrue(not latch.empty())
class GetTest(testlib.TestCase):
klass = mitogen.core.Latch
# TODO: test multiple waiters.
def test_empty_noblock(self):
latch = self.klass()
exc = self.assertRaises(mitogen.core.TimeoutError,
lambda: latch.get(block=False))
def test_empty_zero_timeout(self):
latch = self.klass()
exc = self.assertRaises(mitogen.core.TimeoutError,
lambda: latch.get(timeout=0))
def test_nonempty(self):
obj = object()
latch = self.klass()
latch.put(obj)
self.assertEquals(obj, latch.get())
def test_nonempty_noblock(self):
obj = object()
latch = self.klass()
latch.put(obj)
self.assertEquals(obj, latch.get(block=False))
def test_nonempty_zero_timeout(self):
obj = object()
latch = self.klass()
latch.put(obj)
self.assertEquals(obj, latch.get(timeout=0))
class ThreadedGetTest(testlib.TestCase):
klass = mitogen.core.Latch
def setUp(self):
super(ThreadedGetTest, self).setUp()
self.results = []
self.excs = []
self.threads = []
def _worker(self, func):
try:
self.results.append(func())
except Exception:
e = sys.exc_info()[1]
self.results.append(None)
self.excs.append(e)
def start_one(self, func):
thread = threading.Thread(target=self._worker, args=(func,))
thread.start()
self.threads.append(thread)
def join(self):
for th in self.threads:
th.join(3.0)
def test_one_thread(self):
latch = self.klass()
self.start_one(lambda: latch.get(timeout=3.0))
latch.put('test')
self.join()
self.assertEquals(self.results, ['test'])
self.assertEquals(self.excs, [])
def test_five_threads(self):
latch = self.klass()
for x in range(5):
self.start_one(lambda: latch.get(timeout=3.0))
for x in range(5):
latch.put(x)
self.join()
self.assertEquals(sorted(self.results), list(range(5)))
self.assertEquals(self.excs, [])
class PutTest(testlib.TestCase):
klass = mitogen.core.Latch
def test_put(self):
latch = self.klass()
latch.put(None)
self.assertEquals(None, latch.get())
class CloseTest(testlib.TestCase):
klass = mitogen.core.Latch
def test_empty_noblock(self):
latch = self.klass()
latch.close()
self.assertRaises(mitogen.core.LatchError,
lambda: latch.get(block=False))
def test_empty_zero_timeout(self):
latch = self.klass()
latch.close()
self.assertRaises(mitogen.core.LatchError,
lambda: latch.get(timeout=0))
def test_nonempty(self):
obj = object()
latch = self.klass()
latch.put(obj)
latch.close()
self.assertRaises(mitogen.core.LatchError,
lambda: latch.get())
def test_nonempty_noblock(self):
obj = object()
latch = self.klass()
latch.put(obj)
latch.close()
self.assertRaises(mitogen.core.LatchError,
lambda: latch.get(block=False))
def test_nonempty_zero_timeout(self):
obj = object()
latch = self.klass()
latch.put(obj)
latch.close()
self.assertRaises(mitogen.core.LatchError,
lambda: latch.get(timeout=0))
def test_put(self):
latch = self.klass()
latch.close()
self.assertRaises(mitogen.core.LatchError,
lambda: latch.put(None))
def test_double_close(self):
latch = self.klass()
latch.close()
latch.close()
class ThreadedCloseTest(testlib.TestCase):
klass = mitogen.core.Latch
def setUp(self):
super(ThreadedCloseTest, self).setUp()
self.results = []
self.excs = []
self.threads = []
def _worker(self, func):
try:
self.results.append(func())
except Exception:
e = sys.exc_info()[1]
self.results.append(None)
self.excs.append(e)
def start_one(self, func):
thread = threading.Thread(target=self._worker, args=(func,))
thread.start()
self.threads.append(thread)
def join(self):
for th in self.threads:
th.join(3.0)
def test_one_thread(self):
latch = self.klass()
self.start_one(lambda: latch.get(timeout=3.0))
latch.close()
self.join()
self.assertEquals(self.results, [None])
for exc in self.excs:
self.assertTrue(isinstance(exc, mitogen.core.LatchError))
def test_five_threads(self):
latch = self.klass()
for x in range(5):
self.start_one(lambda: latch.get(timeout=3.0))
latch.close()
self.join()
self.assertEquals(self.results, [None]*5)
for exc in self.excs:
self.assertTrue(isinstance(exc, mitogen.core.LatchError))
if __name__ == '__main__':
unittest2.main()