def test_wait_does_not_propogate_exceptions_from_result(self):
transfer_coordinator = TransferCoordinator()
transfer_coordinator.set_exception(FutureResultException())
transfer_coordinator.announce_done()
try:
self.coordinator_controller.wait()
except FutureResultException as e:
self.fail('%s should not have been raised.' % e)
def test_cancel_with_provided_exception(self):
message = 'my cancel message'
transfer_coordinator = TransferCoordinator()
self.coordinator_controller.add_transfer_coordinator(
transfer_coordinator)
self.coordinator_controller.cancel(message, exc_type=FatalError)
transfer_coordinator.announce_done()
with self.assertRaisesRegexp(FatalError, message):
transfer_coordinator.result()
def test_cancel_with_message(self):
message = 'my cancel message'
transfer_coordinator = TransferCoordinator()
self.coordinator_controller.add_transfer_coordinator(
transfer_coordinator)
self.coordinator_controller.cancel(message)
transfer_coordinator.announce_done()
with self.assertRaisesRegexp(CancelledError, message):
transfer_coordinator.result()
def _get_future_with_components(self, call_args):
transfer_id = self._id_counter
# Creates a new transfer future along with its components
transfer_coordinator = TransferCoordinator(transfer_id=transfer_id)
# Track the transfer coordinator for transfers to manage.
self._coordinator_controller.add_transfer_coordinator(
transfer_coordinator)
# Also make sure that the transfer coordinator is removed once
# the transfer completes so it does not stick around in memory.
transfer_coordinator.add_done_callback(
self._coordinator_controller.remove_transfer_coordinator,
transfer_coordinator)
components = {
'meta': TransferMeta(call_args, transfer_id=transfer_id),
'coordinator': transfer_coordinator
}
transfer_future = TransferFuture(**components)
return transfer_future, components
def test_add_transfer_coordinator(self):
transfer_coordinator = TransferCoordinator()
# Add the transfer coordinator
self.coordinator_controller.add_transfer_coordinator(
transfer_coordinator)
# Ensure that is tracked.
self.assertEqual(
self.coordinator_controller.tracked_transfer_coordinators,
set([transfer_coordinator]))
def setUp(self):
self.leaky_bucket = mock.Mock(LeakyBucket)
self.time_utils = mock.Mock(TimeUtils)
self.tempdir = tempfile.mkdtemp()
self.content = b'a' * 1024 * 1024
self.filename = os.path.join(self.tempdir, 'myfile')
with open(self.filename, 'wb') as f:
f.write(self.content)
self.coordinator = TransferCoordinator()
def _get_future_with_components(self, call_args):
transfer_id = self._id_counter
# Creates a new transfer future along with its components
transfer_coordinator = TransferCoordinator(transfer_id=transfer_id)
# Track the transfer coordinator for transfers to manage.
self._coordinator_controller.add_transfer_coordinator(
transfer_coordinator)
# Also make sure that the transfer coordinator is removed once
# the transfer completes so it does not stick around in memory.
transfer_coordinator.add_done_callback(
self._coordinator_controller.remove_transfer_coordinator,
transfer_coordinator)
components = {
'meta': TransferMeta(call_args, transfer_id=transfer_id),
'coordinator': transfer_coordinator
}
transfer_future = TransferFuture(**components)
return transfer_future, components
def test_cancel(self):
transfer_coordinator = TransferCoordinator()
# Add the transfer coordinator
self.coordinator_controller.add_transfer_coordinator(
transfer_coordinator)
# Cancel with the canceler
self.coordinator_controller.cancel()
# Check that coordinator got canceled
self.assert_coordinator_is_cancelled(transfer_coordinator)
def test_remove_transfer_coordinator(self):
transfer_coordinator = TransferCoordinator()
# Add the coordinator
self.coordinator_controller.add_transfer_coordinator(
transfer_coordinator)
# Now remove the coordinator
self.coordinator_controller.remove_transfer_coordinator(
transfer_coordinator)
# Make sure that it is no longer getting tracked.
self.assertEqual(
self.coordinator_controller.tracked_transfer_coordinators, set())
def test_wait_does_not_propogate_exceptions_from_result(self):
transfer_coordinator = TransferCoordinator()
transfer_coordinator.set_exception(FutureResultException())
transfer_coordinator.announce_done()
try:
self.coordinator_controller.wait()
except FutureResultException as e:
self.fail('%s should not have been raised.' % e)
def test_cancel_with_provided_exception(self):
message = 'my cancel message'
transfer_coordinator = TransferCoordinator()
self.coordinator_controller.add_transfer_coordinator(
transfer_coordinator)
self.coordinator_controller.cancel(message, exc_type=FatalError)
transfer_coordinator.announce_done()
with self.assertRaisesRegexp(FatalError, message):
transfer_coordinator.result()
def test_cancel_with_message(self):
message = 'my cancel message'
transfer_coordinator = TransferCoordinator()
self.coordinator_controller.add_transfer_coordinator(
transfer_coordinator)
self.coordinator_controller.cancel(message)
transfer_coordinator.announce_done()
with self.assertRaisesRegexp(CancelledError, message):
transfer_coordinator.result()
def test_wait_for_done_transfer_coordinators(self):
# Create a coordinator and add it to the canceler
transfer_coordinator = TransferCoordinator()
self.coordinator_controller.add_transfer_coordinator(
transfer_coordinator)
sleep_time = 0.02
with ThreadPoolExecutor(max_workers=1) as executor:
# In a seperate thread sleep and then set the transfer coordinator
# to done after sleeping.
start_time = time.time()
executor.submit(self.sleep_then_announce_done,
transfer_coordinator, sleep_time)
# Now call wait to wait for the transfer coordinator to be done.
self.coordinator_controller.wait()
end_time = time.time()
wait_time = end_time - start_time
# The time waited should not be less than the time it took to sleep in
# the seperate thread because the wait ending should be dependent on
# the sleeping thread announcing that the transfer coordinator is done.
self.assertTrue(sleep_time <= wait_time)
def test_transfer_id(self):
transfer_coordinator = TransferCoordinator(transfer_id=1)
self.assertEqual(transfer_coordinator.transfer_id, 1)
def setUp(self):
self.transfer_coordinator = TransferCoordinator()
def setUp(self):
self.transfer_id = 1
self.transfer_coordinator = TransferCoordinator(
transfer_id=self.transfer_id)
class TestTask(unittest.TestCase):
def setUp(self):
self.transfer_id = 1
self.transfer_coordinator = TransferCoordinator(
transfer_id=self.transfer_id)
def test_repr(self):
main_kwargs = {'bucket': 'mybucket', 'param_to_not_include': 'foo'}
task = ReturnKwargsTask(self.transfer_coordinator,
main_kwargs=main_kwargs)
# The repr should not include the other parameter because it is not
# a desired parameter to include.
self.assertEqual(repr(task),
'ReturnKwargsTask(%s)' % {'bucket': 'mybucket'})
def test_transfer_id(self):
task = SuccessTask(self.transfer_coordinator)
# Make sure that the id is the one provided to the id associated
# to the transfer coordinator.
self.assertEqual(task.transfer_id, self.transfer_id)
def test_context_status_transitioning_success(self):
# The status should be set to running.
self.transfer_coordinator.set_status_to_running()
self.assertEqual(self.transfer_coordinator.status, 'running')
# If a task is called, the status still should be running.
SuccessTask(self.transfer_coordinator)()
self.assertEqual(self.transfer_coordinator.status, 'running')
# Once the final task is called, the status should be set to success.
SuccessTask(self.transfer_coordinator, is_final=True)()
self.assertEqual(self.transfer_coordinator.status, 'success')
def test_context_status_transitioning_failed(self):
self.transfer_coordinator.set_status_to_running()
SuccessTask(self.transfer_coordinator)()
self.assertEqual(self.transfer_coordinator.status, 'running')
# A failure task should result in the failed status
FailureTask(self.transfer_coordinator)()
self.assertEqual(self.transfer_coordinator.status, 'failed')
# Even if the final task comes in and succeeds, it should stay failed.
SuccessTask(self.transfer_coordinator, is_final=True)()
self.assertEqual(self.transfer_coordinator.status, 'failed')
def test_result_setting_for_success(self):
override_return = 'foo'
SuccessTask(self.transfer_coordinator)()
SuccessTask(self.transfer_coordinator,
main_kwargs={'return_value': override_return},
is_final=True)()
# The return value for the transfer future should be of the final
# task.
self.assertEqual(self.transfer_coordinator.result(), override_return)
def test_result_setting_for_error(self):
FailureTask(self.transfer_coordinator)()
# If another failure comes in, the result should still throw the
# original exception when result() is eventually called.
FailureTask(self.transfer_coordinator,
main_kwargs={'exception': Exception})()
# Even if a success task comes along, the result of the future
# should be the original exception
SuccessTask(self.transfer_coordinator, is_final=True)()
with self.assertRaises(TaskFailureException):
self.transfer_coordinator.result()
def test_done_callbacks_success(self):
callback_results = []
SuccessTask(self.transfer_coordinator,
done_callbacks=[
partial(callback_results.append, 'first'),
partial(callback_results.append, 'second')
])()
# For successful tasks, the done callbacks should get called.
self.assertEqual(callback_results, ['first', 'second'])
def test_done_callbacks_failure(self):
callback_results = []
FailureTask(self.transfer_coordinator,
done_callbacks=[
partial(callback_results.append, 'first'),
partial(callback_results.append, 'second')
])()
# For even failed tasks, the done callbacks should get called.
self.assertEqual(callback_results, ['first', 'second'])
# Callbacks should continue to be called even after a related failure
SuccessTask(self.transfer_coordinator,
done_callbacks=[
partial(callback_results.append, 'third'),
partial(callback_results.append, 'fourth')
])()
self.assertEqual(callback_results,
['first', 'second', 'third', 'fourth'])
def test_failure_cleanups_on_failure(self):
callback_results = []
self.transfer_coordinator.add_failure_cleanup(callback_results.append,
'first')
self.transfer_coordinator.add_failure_cleanup(callback_results.append,
'second')
FailureTask(self.transfer_coordinator)()
# The failure callbacks should have not been called yet because it
# is not the last task
self.assertEqual(callback_results, [])
# Now the failure callbacks should get called.
SuccessTask(self.transfer_coordinator, is_final=True)()
self.assertEqual(callback_results, ['first', 'second'])
def test_no_failure_cleanups_on_success(self):
callback_results = []
self.transfer_coordinator.add_failure_cleanup(callback_results.append,
'first')
self.transfer_coordinator.add_failure_cleanup(callback_results.append,
'second')
SuccessTask(self.transfer_coordinator, is_final=True)()
# The failure cleanups should not have been called because no task
# failed for the transfer context.
self.assertEqual(callback_results, [])
def test_passing_main_kwargs(self):
main_kwargs = {'foo': 'bar', 'baz': 'biz'}
ReturnKwargsTask(self.transfer_coordinator,
main_kwargs=main_kwargs,
is_final=True)()
# The kwargs should have been passed to the main()
self.assertEqual(self.transfer_coordinator.result(), main_kwargs)
def test_passing_pending_kwargs_single_futures(self):
pending_kwargs = {}
ref_main_kwargs = {'foo': 'bar', 'baz': 'biz'}
# Pass some tasks to an executor
with futures.ThreadPoolExecutor(1) as executor:
pending_kwargs['foo'] = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value': ref_main_kwargs['foo']}))
pending_kwargs['baz'] = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value': ref_main_kwargs['baz']}))
# Create a task that depends on the tasks passed to the executor
ReturnKwargsTask(self.transfer_coordinator,
pending_main_kwargs=pending_kwargs,
is_final=True)()
# The result should have the pending keyword arg values flushed
# out.
self.assertEqual(self.transfer_coordinator.result(), ref_main_kwargs)
def test_passing_pending_kwargs_list_of_futures(self):
pending_kwargs = {}
ref_main_kwargs = {'foo': ['first', 'second']}
# Pass some tasks to an executor
with futures.ThreadPoolExecutor(1) as executor:
first_future = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value': ref_main_kwargs['foo'][0]}))
second_future = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value': ref_main_kwargs['foo'][1]}))
# Make the pending keyword arg value a list
pending_kwargs['foo'] = [first_future, second_future]
# Create a task that depends on the tasks passed to the executor
ReturnKwargsTask(self.transfer_coordinator,
pending_main_kwargs=pending_kwargs,
is_final=True)()
# The result should have the pending keyword arg values flushed
# out in the expected order.
self.assertEqual(self.transfer_coordinator.result(), ref_main_kwargs)
def test_passing_pending_and_non_pending_kwargs(self):
main_kwargs = {'nonpending_value': 'foo'}
pending_kwargs = {}
ref_main_kwargs = {
'nonpending_value': 'foo',
'pending_value': 'bar',
'pending_list': ['first', 'second']
}
# Create the pending tasks
with futures.ThreadPoolExecutor(1) as executor:
pending_kwargs['pending_value'] = executor.submit(
SuccessTask(self.transfer_coordinator,
main_kwargs={
'return_value':
ref_main_kwargs['pending_value']
}))
first_future = executor.submit(
SuccessTask(self.transfer_coordinator,
main_kwargs={
'return_value':
ref_main_kwargs['pending_list'][0]
}))
second_future = executor.submit(
SuccessTask(self.transfer_coordinator,
main_kwargs={
'return_value':
ref_main_kwargs['pending_list'][1]
}))
# Make the pending keyword arg value a list
pending_kwargs['pending_list'] = [first_future, second_future]
# Create a task that depends on the tasks passed to the executor
# and just regular nonpending kwargs.
ReturnKwargsTask(self.transfer_coordinator,
main_kwargs=main_kwargs,
pending_main_kwargs=pending_kwargs,
is_final=True)()
# The result should have all of the kwargs (both pending and
# nonpending)
self.assertEqual(self.transfer_coordinator.result(), ref_main_kwargs)
def test_single_failed_pending_future(self):
pending_kwargs = {}
# Pass some tasks to an executor. Make one successful and the other
# a failure.
with futures.ThreadPoolExecutor(1) as executor:
pending_kwargs['foo'] = executor.submit(
SuccessTask(self.transfer_coordinator,
main_kwargs={'return_value': 'bar'}))
pending_kwargs['baz'] = executor.submit(
FailureTask(self.transfer_coordinator))
# Create a task that depends on the tasks passed to the executor
ReturnKwargsTask(self.transfer_coordinator,
pending_main_kwargs=pending_kwargs,
is_final=True)()
# The end result should raise the exception from the initial
# pending future value
with self.assertRaises(TaskFailureException):
self.transfer_coordinator.result()
def test_single_failed_pending_future_in_list(self):
pending_kwargs = {}
# Pass some tasks to an executor. Make one successful and the other
# a failure.
with futures.ThreadPoolExecutor(1) as executor:
first_future = executor.submit(
SuccessTask(self.transfer_coordinator,
main_kwargs={'return_value': 'bar'}))
second_future = executor.submit(
FailureTask(self.transfer_coordinator))
pending_kwargs['pending_list'] = [first_future, second_future]
# Create a task that depends on the tasks passed to the executor
ReturnKwargsTask(self.transfer_coordinator,
pending_main_kwargs=pending_kwargs,
is_final=True)()
# The end result should raise the exception from the initial
# pending future value in the list
with self.assertRaises(TaskFailureException):
self.transfer_coordinator.result()
def test_repr(self):
transfer_coordinator = TransferCoordinator(transfer_id=1)
self.assertEqual(repr(transfer_coordinator),
'TransferCoordinator(transfer_id=1)')
def setUp(self):
super(BaseTaskTest, self).setUp()
self.transfer_coordinator = TransferCoordinator()
def setUp(self):
self.coordinator = TransferCoordinator()
self.tag_semaphores = {}
self.executor = self.get_executor()
def setUp(self):
self.transfer_id = 1
self.transfer_coordinator = TransferCoordinator(
transfer_id=self.transfer_id)
def setUp(self):
self.meta = TransferMeta()
self.coordinator = TransferCoordinator()
self.future = self._get_transfer_future()
class TestTask(unittest.TestCase):
def setUp(self):
self.transfer_id = 1
self.transfer_coordinator = TransferCoordinator(
transfer_id=self.transfer_id)
def test_repr(self):
main_kwargs = {
'bucket': 'mybucket',
'param_to_not_include': 'foo'
}
task = ReturnKwargsTask(
self.transfer_coordinator, main_kwargs=main_kwargs)
# The repr should not include the other parameter because it is not
# a desired parameter to include.
self.assertEqual(
repr(task),
'ReturnKwargsTask(transfer_id=%s, %s)' % (
self.transfer_id, {'bucket': 'mybucket'})
)
def test_transfer_id(self):
task = SuccessTask(self.transfer_coordinator)
# Make sure that the id is the one provided to the id associated
# to the transfer coordinator.
self.assertEqual(task.transfer_id, self.transfer_id)
def test_context_status_transitioning_success(self):
# The status should be set to running.
self.transfer_coordinator.set_status_to_running()
self.assertEqual(self.transfer_coordinator.status, 'running')
# If a task is called, the status still should be running.
SuccessTask(self.transfer_coordinator)()
self.assertEqual(self.transfer_coordinator.status, 'running')
# Once the final task is called, the status should be set to success.
SuccessTask(self.transfer_coordinator, is_final=True)()
self.assertEqual(self.transfer_coordinator.status, 'success')
def test_context_status_transitioning_failed(self):
self.transfer_coordinator.set_status_to_running()
SuccessTask(self.transfer_coordinator)()
self.assertEqual(self.transfer_coordinator.status, 'running')
# A failure task should result in the failed status
FailureTask(self.transfer_coordinator)()
self.assertEqual(self.transfer_coordinator.status, 'failed')
# Even if the final task comes in and succeeds, it should stay failed.
SuccessTask(self.transfer_coordinator, is_final=True)()
self.assertEqual(self.transfer_coordinator.status, 'failed')
def test_result_setting_for_success(self):
override_return = 'foo'
SuccessTask(self.transfer_coordinator)()
SuccessTask(self.transfer_coordinator, main_kwargs={
'return_value': override_return}, is_final=True)()
# The return value for the transfer future should be of the final
# task.
self.assertEqual(self.transfer_coordinator.result(), override_return)
def test_result_setting_for_error(self):
FailureTask(self.transfer_coordinator)()
# If another failure comes in, the result should still throw the
# original exception when result() is eventually called.
FailureTask(self.transfer_coordinator, main_kwargs={
'exception': Exception})()
# Even if a success task comes along, the result of the future
# should be the original exception
SuccessTask(self.transfer_coordinator, is_final=True)()
with self.assertRaises(TaskFailureException):
self.transfer_coordinator.result()
def test_done_callbacks_success(self):
callback_results = []
SuccessTask(self.transfer_coordinator, done_callbacks=[
partial(callback_results.append, 'first'),
partial(callback_results.append, 'second')
])()
# For successful tasks, the done callbacks should get called.
self.assertEqual(callback_results, ['first', 'second'])
def test_done_callbacks_failure(self):
callback_results = []
FailureTask(self.transfer_coordinator, done_callbacks=[
partial(callback_results.append, 'first'),
partial(callback_results.append, 'second')
])()
# For even failed tasks, the done callbacks should get called.
self.assertEqual(callback_results, ['first', 'second'])
# Callbacks should continue to be called even after a related failure
SuccessTask(self.transfer_coordinator, done_callbacks=[
partial(callback_results.append, 'third'),
partial(callback_results.append, 'fourth')
])()
self.assertEqual(
callback_results, ['first', 'second', 'third', 'fourth'])
def test_failure_cleanups_on_failure(self):
callback_results = []
self.transfer_coordinator.add_failure_cleanup(
callback_results.append, 'first')
self.transfer_coordinator.add_failure_cleanup(
callback_results.append, 'second')
FailureTask(self.transfer_coordinator)()
# The failure callbacks should have not been called yet because it
# is not the last task
self.assertEqual(callback_results, [])
# Now the failure callbacks should get called.
SuccessTask(self.transfer_coordinator, is_final=True)()
self.assertEqual(callback_results, ['first', 'second'])
def test_no_failure_cleanups_on_success(self):
callback_results = []
self.transfer_coordinator.add_failure_cleanup(
callback_results.append, 'first')
self.transfer_coordinator.add_failure_cleanup(
callback_results.append, 'second')
SuccessTask(self.transfer_coordinator, is_final=True)()
# The failure cleanups should not have been called because no task
# failed for the transfer context.
self.assertEqual(callback_results, [])
def test_passing_main_kwargs(self):
main_kwargs = {'foo': 'bar', 'baz': 'biz'}
ReturnKwargsTask(
self.transfer_coordinator, main_kwargs=main_kwargs,
is_final=True)()
# The kwargs should have been passed to the main()
self.assertEqual(self.transfer_coordinator.result(), main_kwargs)
def test_passing_pending_kwargs_single_futures(self):
pending_kwargs = {}
ref_main_kwargs = {'foo': 'bar', 'baz': 'biz'}
# Pass some tasks to an executor
with futures.ThreadPoolExecutor(1) as executor:
pending_kwargs['foo'] = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value': ref_main_kwargs['foo']}
)
)
pending_kwargs['baz'] = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value': ref_main_kwargs['baz']}
)
)
# Create a task that depends on the tasks passed to the executor
ReturnKwargsTask(
self.transfer_coordinator, pending_main_kwargs=pending_kwargs,
is_final=True)()
# The result should have the pending keyword arg values flushed
# out.
self.assertEqual(self.transfer_coordinator.result(), ref_main_kwargs)
def test_passing_pending_kwargs_list_of_futures(self):
pending_kwargs = {}
ref_main_kwargs = {'foo': ['first', 'second']}
# Pass some tasks to an executor
with futures.ThreadPoolExecutor(1) as executor:
first_future = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value': ref_main_kwargs['foo'][0]}
)
)
second_future = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value': ref_main_kwargs['foo'][1]}
)
)
# Make the pending keyword arg value a list
pending_kwargs['foo'] = [first_future, second_future]
# Create a task that depends on the tasks passed to the executor
ReturnKwargsTask(
self.transfer_coordinator, pending_main_kwargs=pending_kwargs,
is_final=True)()
# The result should have the pending keyword arg values flushed
# out in the expected order.
self.assertEqual(self.transfer_coordinator.result(), ref_main_kwargs)
def test_passing_pending_and_non_pending_kwargs(self):
main_kwargs = {'nonpending_value': 'foo'}
pending_kwargs = {}
ref_main_kwargs = {
'nonpending_value': 'foo',
'pending_value': 'bar',
'pending_list': ['first', 'second']
}
# Create the pending tasks
with futures.ThreadPoolExecutor(1) as executor:
pending_kwargs['pending_value'] = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value':
ref_main_kwargs['pending_value']}
)
)
first_future = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value':
ref_main_kwargs['pending_list'][0]}
)
)
second_future = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value':
ref_main_kwargs['pending_list'][1]}
)
)
# Make the pending keyword arg value a list
pending_kwargs['pending_list'] = [first_future, second_future]
# Create a task that depends on the tasks passed to the executor
# and just regular nonpending kwargs.
ReturnKwargsTask(
self.transfer_coordinator, main_kwargs=main_kwargs,
pending_main_kwargs=pending_kwargs,
is_final=True)()
# The result should have all of the kwargs (both pending and
# nonpending)
self.assertEqual(self.transfer_coordinator.result(), ref_main_kwargs)
def test_single_failed_pending_future(self):
pending_kwargs = {}
# Pass some tasks to an executor. Make one successful and the other
# a failure.
with futures.ThreadPoolExecutor(1) as executor:
pending_kwargs['foo'] = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value': 'bar'}
)
)
pending_kwargs['baz'] = executor.submit(
FailureTask(self.transfer_coordinator))
# Create a task that depends on the tasks passed to the executor
ReturnKwargsTask(
self.transfer_coordinator, pending_main_kwargs=pending_kwargs,
is_final=True)()
# The end result should raise the exception from the initial
# pending future value
with self.assertRaises(TaskFailureException):
self.transfer_coordinator.result()
def test_single_failed_pending_future_in_list(self):
pending_kwargs = {}
# Pass some tasks to an executor. Make one successful and the other
# a failure.
with futures.ThreadPoolExecutor(1) as executor:
first_future = executor.submit(
SuccessTask(
self.transfer_coordinator,
main_kwargs={'return_value': 'bar'}
)
)
second_future = executor.submit(
FailureTask(self.transfer_coordinator))
pending_kwargs['pending_list'] = [first_future, second_future]
# Create a task that depends on the tasks passed to the executor
ReturnKwargsTask(
self.transfer_coordinator, pending_main_kwargs=pending_kwargs,
is_final=True)()
# The end result should raise the exception from the initial
# pending future value in the list
with self.assertRaises(TaskFailureException):
self.transfer_coordinator.result()
