mirror of https://github.com/python/cpython
622 lines
21 KiB
Python
622 lines
21 KiB
Python
import test.support
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# Skip tests if _multiprocessing wasn't built.
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test.support.import_module('_multiprocessing')
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# Skip tests if sem_open implementation is broken.
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test.support.import_module('multiprocessing.synchronize')
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# import threading after _multiprocessing to raise a more revelant error
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# message: "No module named _multiprocessing". _multiprocessing is not compiled
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# without thread support.
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test.support.import_module('threading')
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from test.script_helper import assert_python_ok
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import sys
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import threading
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import time
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import unittest
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from concurrent import futures
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from concurrent.futures._base import (
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PENDING, RUNNING, CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED, Future)
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import concurrent.futures.process
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def create_future(state=PENDING, exception=None, result=None):
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f = Future()
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f._state = state
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f._exception = exception
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f._result = result
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return f
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PENDING_FUTURE = create_future(state=PENDING)
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RUNNING_FUTURE = create_future(state=RUNNING)
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CANCELLED_FUTURE = create_future(state=CANCELLED)
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CANCELLED_AND_NOTIFIED_FUTURE = create_future(state=CANCELLED_AND_NOTIFIED)
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EXCEPTION_FUTURE = create_future(state=FINISHED, exception=IOError())
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SUCCESSFUL_FUTURE = create_future(state=FINISHED, result=42)
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def mul(x, y):
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return x * y
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def sleep_and_raise(t):
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time.sleep(t)
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raise Exception('this is an exception')
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def sleep_and_print(t, msg):
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time.sleep(t)
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print(msg)
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sys.stdout.flush()
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class ExecutorMixin:
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worker_count = 5
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def setUp(self):
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self.t1 = time.time()
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try:
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self.executor = self.executor_type(max_workers=self.worker_count)
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except NotImplementedError as e:
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self.skipTest(str(e))
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self._prime_executor()
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def tearDown(self):
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self.executor.shutdown(wait=True)
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dt = time.time() - self.t1
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if test.support.verbose:
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print("%.2fs" % dt, end=' ')
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self.assertLess(dt, 60, "synchronization issue: test lasted too long")
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def _prime_executor(self):
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# Make sure that the executor is ready to do work before running the
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# tests. This should reduce the probability of timeouts in the tests.
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futures = [self.executor.submit(time.sleep, 0.1)
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for _ in range(self.worker_count)]
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for f in futures:
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f.result()
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class ThreadPoolMixin(ExecutorMixin):
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executor_type = futures.ThreadPoolExecutor
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class ProcessPoolMixin(ExecutorMixin):
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executor_type = futures.ProcessPoolExecutor
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class ExecutorShutdownTest(unittest.TestCase):
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def test_run_after_shutdown(self):
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self.executor.shutdown()
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self.assertRaises(RuntimeError,
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self.executor.submit,
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pow, 2, 5)
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def test_interpreter_shutdown(self):
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# Test the atexit hook for shutdown of worker threads and processes
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rc, out, err = assert_python_ok('-c', """if 1:
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from concurrent.futures import {executor_type}
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from time import sleep
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from test.test_concurrent_futures import sleep_and_print
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t = {executor_type}(5)
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t.submit(sleep_and_print, 1.0, "apple")
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""".format(executor_type=self.executor_type.__name__))
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# Errors in atexit hooks don't change the process exit code, check
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# stderr manually.
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self.assertFalse(err)
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self.assertEqual(out.strip(), b"apple")
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class ThreadPoolShutdownTest(ThreadPoolMixin, ExecutorShutdownTest):
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def _prime_executor(self):
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pass
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def test_threads_terminate(self):
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self.executor.submit(mul, 21, 2)
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self.executor.submit(mul, 6, 7)
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self.executor.submit(mul, 3, 14)
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self.assertEqual(len(self.executor._threads), 3)
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self.executor.shutdown()
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for t in self.executor._threads:
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t.join()
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def test_context_manager_shutdown(self):
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with futures.ThreadPoolExecutor(max_workers=5) as e:
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executor = e
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self.assertEqual(list(e.map(abs, range(-5, 5))),
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[5, 4, 3, 2, 1, 0, 1, 2, 3, 4])
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for t in executor._threads:
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t.join()
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def test_del_shutdown(self):
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executor = futures.ThreadPoolExecutor(max_workers=5)
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executor.map(abs, range(-5, 5))
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threads = executor._threads
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del executor
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for t in threads:
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t.join()
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class ProcessPoolShutdownTest(ProcessPoolMixin, ExecutorShutdownTest):
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def _prime_executor(self):
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pass
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def test_processes_terminate(self):
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self.executor.submit(mul, 21, 2)
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self.executor.submit(mul, 6, 7)
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self.executor.submit(mul, 3, 14)
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self.assertEqual(len(self.executor._processes), 5)
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processes = self.executor._processes
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self.executor.shutdown()
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for p in processes:
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p.join()
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def test_context_manager_shutdown(self):
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with futures.ProcessPoolExecutor(max_workers=5) as e:
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processes = e._processes
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self.assertEqual(list(e.map(abs, range(-5, 5))),
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[5, 4, 3, 2, 1, 0, 1, 2, 3, 4])
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for p in processes:
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p.join()
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def test_del_shutdown(self):
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executor = futures.ProcessPoolExecutor(max_workers=5)
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list(executor.map(abs, range(-5, 5)))
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queue_management_thread = executor._queue_management_thread
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processes = executor._processes
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del executor
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queue_management_thread.join()
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for p in processes:
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p.join()
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class WaitTests(unittest.TestCase):
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def test_first_completed(self):
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future1 = self.executor.submit(mul, 21, 2)
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future2 = self.executor.submit(time.sleep, 1.5)
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done, not_done = futures.wait(
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[CANCELLED_FUTURE, future1, future2],
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return_when=futures.FIRST_COMPLETED)
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self.assertEqual(set([future1]), done)
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self.assertEqual(set([CANCELLED_FUTURE, future2]), not_done)
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def test_first_completed_some_already_completed(self):
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future1 = self.executor.submit(time.sleep, 1.5)
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finished, pending = futures.wait(
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[CANCELLED_AND_NOTIFIED_FUTURE, SUCCESSFUL_FUTURE, future1],
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return_when=futures.FIRST_COMPLETED)
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self.assertEqual(
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set([CANCELLED_AND_NOTIFIED_FUTURE, SUCCESSFUL_FUTURE]),
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finished)
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self.assertEqual(set([future1]), pending)
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def test_first_exception(self):
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future1 = self.executor.submit(mul, 2, 21)
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future2 = self.executor.submit(sleep_and_raise, 1.5)
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future3 = self.executor.submit(time.sleep, 3)
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finished, pending = futures.wait(
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[future1, future2, future3],
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return_when=futures.FIRST_EXCEPTION)
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self.assertEqual(set([future1, future2]), finished)
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self.assertEqual(set([future3]), pending)
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def test_first_exception_some_already_complete(self):
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future1 = self.executor.submit(divmod, 21, 0)
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future2 = self.executor.submit(time.sleep, 1.5)
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finished, pending = futures.wait(
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[SUCCESSFUL_FUTURE,
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CANCELLED_FUTURE,
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CANCELLED_AND_NOTIFIED_FUTURE,
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future1, future2],
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return_when=futures.FIRST_EXCEPTION)
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self.assertEqual(set([SUCCESSFUL_FUTURE,
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CANCELLED_AND_NOTIFIED_FUTURE,
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future1]), finished)
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self.assertEqual(set([CANCELLED_FUTURE, future2]), pending)
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def test_first_exception_one_already_failed(self):
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future1 = self.executor.submit(time.sleep, 2)
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finished, pending = futures.wait(
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[EXCEPTION_FUTURE, future1],
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return_when=futures.FIRST_EXCEPTION)
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self.assertEqual(set([EXCEPTION_FUTURE]), finished)
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self.assertEqual(set([future1]), pending)
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def test_all_completed(self):
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future1 = self.executor.submit(divmod, 2, 0)
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future2 = self.executor.submit(mul, 2, 21)
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finished, pending = futures.wait(
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[SUCCESSFUL_FUTURE,
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CANCELLED_AND_NOTIFIED_FUTURE,
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EXCEPTION_FUTURE,
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future1,
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future2],
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return_when=futures.ALL_COMPLETED)
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self.assertEqual(set([SUCCESSFUL_FUTURE,
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CANCELLED_AND_NOTIFIED_FUTURE,
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EXCEPTION_FUTURE,
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future1,
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future2]), finished)
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self.assertEqual(set(), pending)
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def test_timeout(self):
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future1 = self.executor.submit(mul, 6, 7)
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future2 = self.executor.submit(time.sleep, 3)
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finished, pending = futures.wait(
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[CANCELLED_AND_NOTIFIED_FUTURE,
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EXCEPTION_FUTURE,
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SUCCESSFUL_FUTURE,
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future1, future2],
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timeout=1.5,
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return_when=futures.ALL_COMPLETED)
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self.assertEqual(set([CANCELLED_AND_NOTIFIED_FUTURE,
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EXCEPTION_FUTURE,
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SUCCESSFUL_FUTURE,
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future1]), finished)
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self.assertEqual(set([future2]), pending)
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class ThreadPoolWaitTests(ThreadPoolMixin, WaitTests):
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pass
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class ProcessPoolWaitTests(ProcessPoolMixin, WaitTests):
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pass
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class AsCompletedTests(unittest.TestCase):
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# TODO(brian@sweetapp.com): Should have a test with a non-zero timeout.
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def test_no_timeout(self):
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future1 = self.executor.submit(mul, 2, 21)
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future2 = self.executor.submit(mul, 7, 6)
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completed = set(futures.as_completed(
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[CANCELLED_AND_NOTIFIED_FUTURE,
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EXCEPTION_FUTURE,
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SUCCESSFUL_FUTURE,
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future1, future2]))
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self.assertEqual(set(
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[CANCELLED_AND_NOTIFIED_FUTURE,
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EXCEPTION_FUTURE,
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SUCCESSFUL_FUTURE,
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future1, future2]),
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completed)
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def test_zero_timeout(self):
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future1 = self.executor.submit(time.sleep, 2)
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completed_futures = set()
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try:
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for future in futures.as_completed(
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[CANCELLED_AND_NOTIFIED_FUTURE,
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EXCEPTION_FUTURE,
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SUCCESSFUL_FUTURE,
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future1],
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timeout=0):
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completed_futures.add(future)
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except futures.TimeoutError:
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pass
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self.assertEqual(set([CANCELLED_AND_NOTIFIED_FUTURE,
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EXCEPTION_FUTURE,
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SUCCESSFUL_FUTURE]),
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completed_futures)
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class ThreadPoolAsCompletedTests(ThreadPoolMixin, AsCompletedTests):
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pass
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class ProcessPoolAsCompletedTests(ProcessPoolMixin, AsCompletedTests):
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pass
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class ExecutorTest(unittest.TestCase):
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# Executor.shutdown() and context manager usage is tested by
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# ExecutorShutdownTest.
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def test_submit(self):
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future = self.executor.submit(pow, 2, 8)
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self.assertEqual(256, future.result())
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def test_submit_keyword(self):
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future = self.executor.submit(mul, 2, y=8)
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self.assertEqual(16, future.result())
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def test_map(self):
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self.assertEqual(
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list(self.executor.map(pow, range(10), range(10))),
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list(map(pow, range(10), range(10))))
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def test_map_exception(self):
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i = self.executor.map(divmod, [1, 1, 1, 1], [2, 3, 0, 5])
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self.assertEqual(i.__next__(), (0, 1))
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self.assertEqual(i.__next__(), (0, 1))
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self.assertRaises(ZeroDivisionError, i.__next__)
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def test_map_timeout(self):
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results = []
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try:
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for i in self.executor.map(time.sleep,
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[0, 0, 3],
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timeout=1.5):
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results.append(i)
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except futures.TimeoutError:
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pass
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else:
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self.fail('expected TimeoutError')
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self.assertEqual([None, None], results)
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class ThreadPoolExecutorTest(ThreadPoolMixin, ExecutorTest):
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def test_map_submits_without_iteration(self):
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"""Tests verifying issue 11777."""
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finished = []
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def record_finished(n):
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finished.append(n)
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self.executor.map(record_finished, range(10))
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self.executor.shutdown(wait=True)
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self.assertCountEqual(finished, range(10))
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class ProcessPoolExecutorTest(ProcessPoolMixin, ExecutorTest):
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pass
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class FutureTests(unittest.TestCase):
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def test_done_callback_with_result(self):
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callback_result = None
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def fn(callback_future):
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nonlocal callback_result
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callback_result = callback_future.result()
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f = Future()
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f.add_done_callback(fn)
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f.set_result(5)
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self.assertEqual(5, callback_result)
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def test_done_callback_with_exception(self):
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callback_exception = None
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def fn(callback_future):
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nonlocal callback_exception
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callback_exception = callback_future.exception()
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f = Future()
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f.add_done_callback(fn)
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f.set_exception(Exception('test'))
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self.assertEqual(('test',), callback_exception.args)
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def test_done_callback_with_cancel(self):
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was_cancelled = None
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def fn(callback_future):
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nonlocal was_cancelled
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was_cancelled = callback_future.cancelled()
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f = Future()
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f.add_done_callback(fn)
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self.assertTrue(f.cancel())
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self.assertTrue(was_cancelled)
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def test_done_callback_raises(self):
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with test.support.captured_stderr() as stderr:
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raising_was_called = False
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fn_was_called = False
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def raising_fn(callback_future):
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nonlocal raising_was_called
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raising_was_called = True
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raise Exception('doh!')
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def fn(callback_future):
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nonlocal fn_was_called
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fn_was_called = True
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f = Future()
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f.add_done_callback(raising_fn)
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f.add_done_callback(fn)
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f.set_result(5)
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self.assertTrue(raising_was_called)
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self.assertTrue(fn_was_called)
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self.assertIn('Exception: doh!', stderr.getvalue())
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def test_done_callback_already_successful(self):
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callback_result = None
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def fn(callback_future):
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nonlocal callback_result
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callback_result = callback_future.result()
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f = Future()
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f.set_result(5)
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f.add_done_callback(fn)
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self.assertEqual(5, callback_result)
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def test_done_callback_already_failed(self):
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callback_exception = None
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def fn(callback_future):
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nonlocal callback_exception
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callback_exception = callback_future.exception()
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f = Future()
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f.set_exception(Exception('test'))
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f.add_done_callback(fn)
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self.assertEqual(('test',), callback_exception.args)
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def test_done_callback_already_cancelled(self):
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was_cancelled = None
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def fn(callback_future):
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nonlocal was_cancelled
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was_cancelled = callback_future.cancelled()
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f = Future()
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self.assertTrue(f.cancel())
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f.add_done_callback(fn)
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self.assertTrue(was_cancelled)
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def test_repr(self):
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self.assertRegex(repr(PENDING_FUTURE),
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'<Future at 0x[0-9a-f]+ state=pending>')
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self.assertRegex(repr(RUNNING_FUTURE),
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'<Future at 0x[0-9a-f]+ state=running>')
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self.assertRegex(repr(CANCELLED_FUTURE),
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'<Future at 0x[0-9a-f]+ state=cancelled>')
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self.assertRegex(repr(CANCELLED_AND_NOTIFIED_FUTURE),
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'<Future at 0x[0-9a-f]+ state=cancelled>')
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self.assertRegex(
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repr(EXCEPTION_FUTURE),
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'<Future at 0x[0-9a-f]+ state=finished raised IOError>')
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self.assertRegex(
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repr(SUCCESSFUL_FUTURE),
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'<Future at 0x[0-9a-f]+ state=finished returned int>')
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def test_cancel(self):
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f1 = create_future(state=PENDING)
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f2 = create_future(state=RUNNING)
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f3 = create_future(state=CANCELLED)
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f4 = create_future(state=CANCELLED_AND_NOTIFIED)
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f5 = create_future(state=FINISHED, exception=IOError())
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f6 = create_future(state=FINISHED, result=5)
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self.assertTrue(f1.cancel())
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self.assertEqual(f1._state, CANCELLED)
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self.assertFalse(f2.cancel())
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self.assertEqual(f2._state, RUNNING)
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self.assertTrue(f3.cancel())
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self.assertEqual(f3._state, CANCELLED)
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self.assertTrue(f4.cancel())
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self.assertEqual(f4._state, CANCELLED_AND_NOTIFIED)
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self.assertFalse(f5.cancel())
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self.assertEqual(f5._state, FINISHED)
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self.assertFalse(f6.cancel())
|
|
self.assertEqual(f6._state, FINISHED)
|
|
|
|
def test_cancelled(self):
|
|
self.assertFalse(PENDING_FUTURE.cancelled())
|
|
self.assertFalse(RUNNING_FUTURE.cancelled())
|
|
self.assertTrue(CANCELLED_FUTURE.cancelled())
|
|
self.assertTrue(CANCELLED_AND_NOTIFIED_FUTURE.cancelled())
|
|
self.assertFalse(EXCEPTION_FUTURE.cancelled())
|
|
self.assertFalse(SUCCESSFUL_FUTURE.cancelled())
|
|
|
|
def test_done(self):
|
|
self.assertFalse(PENDING_FUTURE.done())
|
|
self.assertFalse(RUNNING_FUTURE.done())
|
|
self.assertTrue(CANCELLED_FUTURE.done())
|
|
self.assertTrue(CANCELLED_AND_NOTIFIED_FUTURE.done())
|
|
self.assertTrue(EXCEPTION_FUTURE.done())
|
|
self.assertTrue(SUCCESSFUL_FUTURE.done())
|
|
|
|
def test_running(self):
|
|
self.assertFalse(PENDING_FUTURE.running())
|
|
self.assertTrue(RUNNING_FUTURE.running())
|
|
self.assertFalse(CANCELLED_FUTURE.running())
|
|
self.assertFalse(CANCELLED_AND_NOTIFIED_FUTURE.running())
|
|
self.assertFalse(EXCEPTION_FUTURE.running())
|
|
self.assertFalse(SUCCESSFUL_FUTURE.running())
|
|
|
|
def test_result_with_timeout(self):
|
|
self.assertRaises(futures.TimeoutError,
|
|
PENDING_FUTURE.result, timeout=0)
|
|
self.assertRaises(futures.TimeoutError,
|
|
RUNNING_FUTURE.result, timeout=0)
|
|
self.assertRaises(futures.CancelledError,
|
|
CANCELLED_FUTURE.result, timeout=0)
|
|
self.assertRaises(futures.CancelledError,
|
|
CANCELLED_AND_NOTIFIED_FUTURE.result, timeout=0)
|
|
self.assertRaises(IOError, EXCEPTION_FUTURE.result, timeout=0)
|
|
self.assertEqual(SUCCESSFUL_FUTURE.result(timeout=0), 42)
|
|
|
|
def test_result_with_success(self):
|
|
# TODO(brian@sweetapp.com): This test is timing dependant.
|
|
def notification():
|
|
# Wait until the main thread is waiting for the result.
|
|
time.sleep(1)
|
|
f1.set_result(42)
|
|
|
|
f1 = create_future(state=PENDING)
|
|
t = threading.Thread(target=notification)
|
|
t.start()
|
|
|
|
self.assertEqual(f1.result(timeout=5), 42)
|
|
|
|
def test_result_with_cancel(self):
|
|
# TODO(brian@sweetapp.com): This test is timing dependant.
|
|
def notification():
|
|
# Wait until the main thread is waiting for the result.
|
|
time.sleep(1)
|
|
f1.cancel()
|
|
|
|
f1 = create_future(state=PENDING)
|
|
t = threading.Thread(target=notification)
|
|
t.start()
|
|
|
|
self.assertRaises(futures.CancelledError, f1.result, timeout=5)
|
|
|
|
def test_exception_with_timeout(self):
|
|
self.assertRaises(futures.TimeoutError,
|
|
PENDING_FUTURE.exception, timeout=0)
|
|
self.assertRaises(futures.TimeoutError,
|
|
RUNNING_FUTURE.exception, timeout=0)
|
|
self.assertRaises(futures.CancelledError,
|
|
CANCELLED_FUTURE.exception, timeout=0)
|
|
self.assertRaises(futures.CancelledError,
|
|
CANCELLED_AND_NOTIFIED_FUTURE.exception, timeout=0)
|
|
self.assertTrue(isinstance(EXCEPTION_FUTURE.exception(timeout=0),
|
|
IOError))
|
|
self.assertEqual(SUCCESSFUL_FUTURE.exception(timeout=0), None)
|
|
|
|
def test_exception_with_success(self):
|
|
def notification():
|
|
# Wait until the main thread is waiting for the exception.
|
|
time.sleep(1)
|
|
with f1._condition:
|
|
f1._state = FINISHED
|
|
f1._exception = IOError()
|
|
f1._condition.notify_all()
|
|
|
|
f1 = create_future(state=PENDING)
|
|
t = threading.Thread(target=notification)
|
|
t.start()
|
|
|
|
self.assertTrue(isinstance(f1.exception(timeout=5), IOError))
|
|
|
|
def test_main():
|
|
test.support.run_unittest(ProcessPoolExecutorTest,
|
|
ThreadPoolExecutorTest,
|
|
ProcessPoolWaitTests,
|
|
ThreadPoolWaitTests,
|
|
ProcessPoolAsCompletedTests,
|
|
ThreadPoolAsCompletedTests,
|
|
FutureTests,
|
|
ProcessPoolShutdownTest,
|
|
ThreadPoolShutdownTest)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|