/usr/lib/python2.7/dist-packages/kombu/tests/test_common.py is in python-kombu 3.0.33-1ubuntu2.
This file is owned by root:root, with mode 0o644.
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import socket
from amqp import RecoverableConnectionError
from kombu import common
from kombu.common import (
Broadcast, maybe_declare,
send_reply, collect_replies,
declaration_cached, ignore_errors,
QoS, PREFETCH_COUNT_MAX,
)
from .case import Case, ContextMock, Mock, MockPool, patch
class test_ignore_errors(Case):
def test_ignored(self):
connection = Mock()
connection.channel_errors = (KeyError, )
connection.connection_errors = (KeyError, )
with ignore_errors(connection):
raise KeyError()
def raising():
raise KeyError()
ignore_errors(connection, raising)
connection.channel_errors = connection.connection_errors = \
()
with self.assertRaises(KeyError):
with ignore_errors(connection):
raise KeyError()
class test_declaration_cached(Case):
def test_when_cached(self):
chan = Mock()
chan.connection.client.declared_entities = ['foo']
self.assertTrue(declaration_cached('foo', chan))
def test_when_not_cached(self):
chan = Mock()
chan.connection.client.declared_entities = ['bar']
self.assertFalse(declaration_cached('foo', chan))
class test_Broadcast(Case):
def test_arguments(self):
q = Broadcast(name='test_Broadcast')
self.assertTrue(q.name.startswith('bcast.'))
self.assertEqual(q.alias, 'test_Broadcast')
self.assertTrue(q.auto_delete)
self.assertEqual(q.exchange.name, 'test_Broadcast')
self.assertEqual(q.exchange.type, 'fanout')
q = Broadcast('test_Broadcast', 'explicit_queue_name')
self.assertEqual(q.name, 'explicit_queue_name')
self.assertEqual(q.exchange.name, 'test_Broadcast')
class test_maybe_declare(Case):
def test_cacheable(self):
channel = Mock()
client = channel.connection.client = Mock()
client.declared_entities = set()
entity = Mock()
entity.can_cache_declaration = True
entity.auto_delete = False
entity.is_bound = True
entity.channel = channel
maybe_declare(entity, channel)
self.assertEqual(entity.declare.call_count, 1)
self.assertIn(
hash(entity), channel.connection.client.declared_entities,
)
maybe_declare(entity, channel)
self.assertEqual(entity.declare.call_count, 1)
entity.channel.connection = None
with self.assertRaises(RecoverableConnectionError):
maybe_declare(entity)
def test_binds_entities(self):
channel = Mock()
channel.connection.client.declared_entities = set()
entity = Mock()
entity.can_cache_declaration = True
entity.is_bound = False
entity.bind.return_value = entity
entity.bind.return_value.channel = channel
maybe_declare(entity, channel)
entity.bind.assert_called_with(channel)
def test_with_retry(self):
channel = Mock()
client = channel.connection.client = Mock()
client.declared_entities = set()
entity = Mock()
entity.can_cache_declaration = True
entity.is_bound = True
entity.channel = channel
maybe_declare(entity, channel, retry=True)
self.assertTrue(channel.connection.client.ensure.call_count)
class test_replies(Case):
def test_send_reply(self):
req = Mock()
req.content_type = 'application/json'
req.content_encoding = 'binary'
req.properties = {'reply_to': 'hello',
'correlation_id': 'world'}
channel = Mock()
exchange = Mock()
exchange.is_bound = True
exchange.channel = channel
producer = Mock()
producer.channel = channel
producer.channel.connection.client.declared_entities = set()
send_reply(exchange, req, {'hello': 'world'}, producer)
self.assertTrue(producer.publish.call_count)
args = producer.publish.call_args
self.assertDictEqual(args[0][0], {'hello': 'world'})
self.assertDictEqual(args[1], {'exchange': exchange,
'routing_key': 'hello',
'correlation_id': 'world',
'serializer': 'json',
'retry': False,
'retry_policy': None,
'content_encoding': 'binary'})
@patch('kombu.common.itermessages')
def test_collect_replies_with_ack(self, itermessages):
conn, channel, queue = Mock(), Mock(), Mock()
body, message = Mock(), Mock()
itermessages.return_value = [(body, message)]
it = collect_replies(conn, channel, queue, no_ack=False)
m = next(it)
self.assertIs(m, body)
itermessages.assert_called_with(conn, channel, queue, no_ack=False)
message.ack.assert_called_with()
with self.assertRaises(StopIteration):
next(it)
channel.after_reply_message_received.assert_called_with(queue.name)
@patch('kombu.common.itermessages')
def test_collect_replies_no_ack(self, itermessages):
conn, channel, queue = Mock(), Mock(), Mock()
body, message = Mock(), Mock()
itermessages.return_value = [(body, message)]
it = collect_replies(conn, channel, queue)
m = next(it)
self.assertIs(m, body)
itermessages.assert_called_with(conn, channel, queue, no_ack=True)
self.assertFalse(message.ack.called)
@patch('kombu.common.itermessages')
def test_collect_replies_no_replies(self, itermessages):
conn, channel, queue = Mock(), Mock(), Mock()
itermessages.return_value = []
it = collect_replies(conn, channel, queue)
with self.assertRaises(StopIteration):
next(it)
self.assertFalse(channel.after_reply_message_received.called)
class test_insured(Case):
@patch('kombu.common.logger')
def test_ensure_errback(self, logger):
common._ensure_errback('foo', 30)
self.assertTrue(logger.error.called)
def test_revive_connection(self):
on_revive = Mock()
channel = Mock()
common.revive_connection(Mock(), channel, on_revive)
on_revive.assert_called_with(channel)
common.revive_connection(Mock(), channel, None)
def get_insured_mocks(self, insured_returns=('works', 'ignored')):
conn = ContextMock()
pool = MockPool(conn)
fun = Mock()
insured = conn.autoretry.return_value = Mock()
insured.return_value = insured_returns
return conn, pool, fun, insured
def test_insured(self):
conn, pool, fun, insured = self.get_insured_mocks()
ret = common.insured(pool, fun, (2, 2), {'foo': 'bar'})
self.assertEqual(ret, 'works')
conn.ensure_connection.assert_called_with(
errback=common._ensure_errback,
)
self.assertTrue(insured.called)
i_args, i_kwargs = insured.call_args
self.assertTupleEqual(i_args, (2, 2))
self.assertDictEqual(i_kwargs, {'foo': 'bar',
'connection': conn})
self.assertTrue(conn.autoretry.called)
ar_args, ar_kwargs = conn.autoretry.call_args
self.assertTupleEqual(ar_args, (fun, conn.default_channel))
self.assertTrue(ar_kwargs.get('on_revive'))
self.assertTrue(ar_kwargs.get('errback'))
def test_insured_custom_errback(self):
conn, pool, fun, insured = self.get_insured_mocks()
custom_errback = Mock()
common.insured(pool, fun, (2, 2), {'foo': 'bar'},
errback=custom_errback)
conn.ensure_connection.assert_called_with(errback=custom_errback)
class MockConsumer(object):
consumers = set()
def __init__(self, channel, queues=None, callbacks=None, **kwargs):
self.channel = channel
self.queues = queues
self.callbacks = callbacks
def __enter__(self):
self.consumers.add(self)
return self
def __exit__(self, *exc_info):
self.consumers.discard(self)
class test_itermessages(Case):
class MockConnection(object):
should_raise_timeout = False
def drain_events(self, **kwargs):
if self.should_raise_timeout:
raise socket.timeout()
for consumer in MockConsumer.consumers:
for callback in consumer.callbacks:
callback('body', 'message')
def test_default(self):
conn = self.MockConnection()
channel = Mock()
channel.connection.client = conn
conn.Consumer = MockConsumer
it = common.itermessages(conn, channel, 'q', limit=1)
ret = next(it)
self.assertTupleEqual(ret, ('body', 'message'))
with self.assertRaises(StopIteration):
next(it)
def test_when_raises_socket_timeout(self):
conn = self.MockConnection()
conn.should_raise_timeout = True
channel = Mock()
channel.connection.client = conn
conn.Consumer = MockConsumer
it = common.itermessages(conn, channel, 'q', limit=1)
with self.assertRaises(StopIteration):
next(it)
@patch('kombu.common.deque')
def test_when_raises_IndexError(self, deque):
deque_instance = deque.return_value = Mock()
deque_instance.popleft.side_effect = IndexError()
conn = self.MockConnection()
channel = Mock()
conn.Consumer = MockConsumer
it = common.itermessages(conn, channel, 'q', limit=1)
with self.assertRaises(StopIteration):
next(it)
class test_QoS(Case):
class _QoS(QoS):
def __init__(self, value):
self.value = value
QoS.__init__(self, None, value)
def set(self, value):
return value
def test_qos_exceeds_16bit(self):
with patch('kombu.common.logger') as logger:
callback = Mock()
qos = QoS(callback, 10)
qos.prev = 100
# cannot use 2 ** 32 because of a bug on OSX Py2.5:
# https://jira.mongodb.org/browse/PYTHON-389
qos.set(4294967296)
self.assertTrue(logger.warn.called)
callback.assert_called_with(prefetch_count=0)
def test_qos_increment_decrement(self):
qos = self._QoS(10)
self.assertEqual(qos.increment_eventually(), 11)
self.assertEqual(qos.increment_eventually(3), 14)
self.assertEqual(qos.increment_eventually(-30), 14)
self.assertEqual(qos.decrement_eventually(7), 7)
self.assertEqual(qos.decrement_eventually(), 6)
def test_qos_disabled_increment_decrement(self):
qos = self._QoS(0)
self.assertEqual(qos.increment_eventually(), 0)
self.assertEqual(qos.increment_eventually(3), 0)
self.assertEqual(qos.increment_eventually(-30), 0)
self.assertEqual(qos.decrement_eventually(7), 0)
self.assertEqual(qos.decrement_eventually(), 0)
self.assertEqual(qos.decrement_eventually(10), 0)
def test_qos_thread_safe(self):
qos = self._QoS(10)
def add():
for i in range(1000):
qos.increment_eventually()
def sub():
for i in range(1000):
qos.decrement_eventually()
def threaded(funs):
from threading import Thread
threads = [Thread(target=fun) for fun in funs]
for thread in threads:
thread.start()
for thread in threads:
thread.join()
threaded([add, add])
self.assertEqual(qos.value, 2010)
qos.value = 1000
threaded([add, sub]) # n = 2
self.assertEqual(qos.value, 1000)
def test_exceeds_short(self):
qos = QoS(Mock(), PREFETCH_COUNT_MAX - 1)
qos.update()
self.assertEqual(qos.value, PREFETCH_COUNT_MAX - 1)
qos.increment_eventually()
self.assertEqual(qos.value, PREFETCH_COUNT_MAX)
qos.increment_eventually()
self.assertEqual(qos.value, PREFETCH_COUNT_MAX + 1)
qos.decrement_eventually()
self.assertEqual(qos.value, PREFETCH_COUNT_MAX)
qos.decrement_eventually()
self.assertEqual(qos.value, PREFETCH_COUNT_MAX - 1)
def test_consumer_increment_decrement(self):
mconsumer = Mock()
qos = QoS(mconsumer.qos, 10)
qos.update()
self.assertEqual(qos.value, 10)
mconsumer.qos.assert_called_with(prefetch_count=10)
qos.decrement_eventually()
qos.update()
self.assertEqual(qos.value, 9)
mconsumer.qos.assert_called_with(prefetch_count=9)
qos.decrement_eventually()
self.assertEqual(qos.value, 8)
mconsumer.qos.assert_called_with(prefetch_count=9)
self.assertIn({'prefetch_count': 9}, mconsumer.qos.call_args)
# Does not decrement 0 value
qos.value = 0
qos.decrement_eventually()
self.assertEqual(qos.value, 0)
qos.increment_eventually()
self.assertEqual(qos.value, 0)
def test_consumer_decrement_eventually(self):
mconsumer = Mock()
qos = QoS(mconsumer.qos, 10)
qos.decrement_eventually()
self.assertEqual(qos.value, 9)
qos.value = 0
qos.decrement_eventually()
self.assertEqual(qos.value, 0)
def test_set(self):
mconsumer = Mock()
qos = QoS(mconsumer.qos, 10)
qos.set(12)
self.assertEqual(qos.prev, 12)
qos.set(qos.prev)
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