/usr/lib/python2.7/dist-packages/kombu/tests/transport/test_SQS.py is in python-kombu 3.0.33-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 | """Testing module for the kombu.transport.SQS package.
NOTE: The SQSQueueMock and SQSConnectionMock classes originally come from
http://github.com/pcsforeducation/sqs-mock-python. They have been patched
slightly.
"""
from __future__ import absolute_import
from kombu import Connection
from kombu import messaging
from kombu import five
from kombu.tests.case import Case, SkipTest
import kombu
try:
from kombu.transport import SQS
except ImportError:
# Boto must not be installed if the SQS transport fails to import,
# so we skip all unit tests. Set SQS to None here, and it will be
# checked during the setUp() phase later.
SQS = None
class SQSQueueMock(object):
def __init__(self, name):
self.name = name
self.messages = []
self._get_message_calls = 0
def clear(self, page_size=10, vtimeout=10):
empty, self.messages[:] = not self.messages, []
return not empty
def count(self, page_size=10, vtimeout=10):
return len(self.messages)
count_slow = count
def delete(self):
self.messages[:] = []
return True
def delete_message(self, message):
try:
self.messages.remove(message)
except ValueError:
return False
return True
def get_messages(self, num_messages=1, visibility_timeout=None,
attributes=None, *args, **kwargs):
self._get_message_calls += 1
return self.messages[:num_messages]
def read(self, visibility_timeout=None):
return self.messages.pop(0)
def write(self, message):
self.messages.append(message)
return True
class SQSConnectionMock(object):
def __init__(self):
self.queues = {}
def get_queue(self, queue):
return self.queues.get(queue)
def get_all_queues(self, prefix=""):
return self.queues.values()
def delete_queue(self, queue, force_deletion=False):
q = self.get_queue(queue)
if q:
if q.count():
return False
q.clear()
self.queues.pop(queue, None)
def delete_message(self, queue, message):
return queue.delete_message(message)
def create_queue(self, name, *args, **kwargs):
q = self.queues[name] = SQSQueueMock(name)
return q
class test_Channel(Case):
def handleMessageCallback(self, message):
self.callback_message = message
def setUp(self):
"""Mock the back-end SQS classes"""
# Sanity check... if SQS is None, then it did not import and we
# cannot execute our tests.
if SQS is None:
raise SkipTest('Boto is not installed')
SQS.Channel._queue_cache.clear()
# Common variables used in the unit tests
self.queue_name = 'unittest'
# Mock the sqs() method that returns an SQSConnection object and
# instead return an SQSConnectionMock() object.
self.sqs_conn_mock = SQSConnectionMock()
def mock_sqs():
return self.sqs_conn_mock
SQS.Channel.sqs = mock_sqs()
# Set up a task exchange for passing tasks through the queue
self.exchange = kombu.Exchange('test_SQS', type='direct')
self.queue = kombu.Queue(self.queue_name,
self.exchange,
self.queue_name)
# Mock up a test SQS Queue with the SQSQueueMock class (and always
# make sure its a clean empty queue)
self.sqs_queue_mock = SQSQueueMock(self.queue_name)
# Now, create our Connection object with the SQS Transport and store
# the connection/channel objects as references for use in these tests.
self.connection = Connection(transport=SQS.Transport)
self.channel = self.connection.channel()
self.queue(self.channel).declare()
self.producer = messaging.Producer(self.channel,
self.exchange,
routing_key=self.queue_name)
# Lastly, make sure that we're set up to 'consume' this queue.
self.channel.basic_consume(self.queue_name,
no_ack=True,
callback=self.handleMessageCallback,
consumer_tag='unittest')
def test_init(self):
"""kombu.SQS.Channel instantiates correctly with mocked queues"""
self.assertIn(self.queue_name, self.channel._queue_cache)
def test_new_queue(self):
queue_name = 'new_unittest_queue'
self.channel._new_queue(queue_name)
self.assertIn(queue_name, self.sqs_conn_mock.queues)
# For cleanup purposes, delete the queue and the queue file
self.channel._delete(queue_name)
def test_delete(self):
queue_name = 'new_unittest_queue'
self.channel._new_queue(queue_name)
self.channel._delete(queue_name)
self.assertNotIn(queue_name, self.channel._queue_cache)
def test_get_from_sqs(self):
# Test getting a single message
message = 'my test message'
self.producer.publish(message)
results = self.channel._get_from_sqs(self.queue_name)
self.assertEqual(len(results), 1)
# Now test getting many messages
for i in range(3):
message = 'message: {0}'.format(i)
self.producer.publish(message)
results = self.channel._get_from_sqs(self.queue_name, count=3)
self.assertEqual(len(results), 3)
def test_get_with_empty_list(self):
with self.assertRaises(five.Empty):
self.channel._get(self.queue_name)
def test_get_bulk_raises_empty(self):
with self.assertRaises(five.Empty):
self.channel._get_bulk(self.queue_name)
def test_messages_to_python(self):
message_count = 3
# Create several test messages and publish them
for i in range(message_count):
message = 'message: %s' % i
self.producer.publish(message)
# Get the messages now
messages = self.channel._get_from_sqs(
self.queue_name, count=message_count,
)
# Now convert them to payloads
payloads = self.channel._messages_to_python(
messages, self.queue_name,
)
# We got the same number of payloads back, right?
self.assertEqual(len(payloads), message_count)
# Make sure they're payload-style objects
for p in payloads:
self.assertTrue('properties' in p)
def test_put_and_get(self):
message = 'my test message'
self.producer.publish(message)
results = self.queue(self.channel).get().payload
self.assertEqual(message, results)
def test_puts_and_gets(self):
for i in range(3):
message = 'message: %s' % i
self.producer.publish(message)
for i in range(3):
self.assertEqual('message: %s' % i,
self.queue(self.channel).get().payload)
def test_put_and_get_bulk(self):
# With QoS.prefetch_count = 0
message = 'my test message'
self.producer.publish(message)
results = self.channel._get_bulk(self.queue_name)
self.assertEqual(1, len(results))
def test_puts_and_get_bulk(self):
# Generate 8 messages
message_count = 8
# Set the prefetch_count to 5
self.channel.qos.prefetch_count = 5
# Now, generate all the messages
for i in range(message_count):
message = 'message: %s' % i
self.producer.publish(message)
# Count how many messages are retrieved the first time. Should
# be 5 (message_count).
results = self.channel._get_bulk(self.queue_name)
self.assertEqual(5, len(results))
# Now, do the get again, the number of messages returned should be 3.
results = self.channel._get_bulk(self.queue_name)
self.assertEqual(3, len(results))
def test_drain_events_with_empty_list(self):
def mock_can_consume():
return False
self.channel.qos.can_consume = mock_can_consume
with self.assertRaises(five.Empty):
self.channel.drain_events()
def test_drain_events_with_prefetch_5(self):
# Generate 20 messages
message_count = 20
expected_get_message_count = 4
# Set the prefetch_count to 5
self.channel.qos.prefetch_count = 5
# Now, generate all the messages
for i in range(message_count):
self.producer.publish('message: %s' % i)
# Now drain all the events
for i in range(message_count):
self.channel.drain_events()
# How many times was the SQSConnectionMock get_message method called?
self.assertEqual(
expected_get_message_count,
self.channel._queue_cache[self.queue_name]._get_message_calls)
def test_drain_events_with_prefetch_none(self):
# Generate 20 messages
message_count = 20
expected_get_message_count = 2
# Set the prefetch_count to None
self.channel.qos.prefetch_count = None
# Now, generate all the messages
for i in range(message_count):
self.producer.publish('message: %s' % i)
# Now drain all the events
for i in range(message_count):
self.channel.drain_events()
# How many times was the SQSConnectionMock get_message method called?
self.assertEqual(
expected_get_message_count,
self.channel._queue_cache[self.queue_name]._get_message_calls)
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