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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
from qpid.client import Client, Closed
from qpid.queue import Empty
from qpid.content import Content
from qpid.testlib import TestBase
class QueueTests(TestBase):
"""Tests for 'methods' on the amqp queue 'class'"""
def test_purge(self):
"""
Test that the purge method removes messages from the queue
"""
channel = self.channel
#setup, declare a queue and add some messages to it:
channel.exchange_declare(exchange="test-exchange", type="direct")
channel.queue_declare(queue="test-queue", exclusive=True)
channel.queue_bind(queue="test-queue", exchange="test-exchange", routing_key="key")
channel.basic_publish(exchange="test-exchange", routing_key="key", content=Content("one"))
channel.basic_publish(exchange="test-exchange", routing_key="key", content=Content("two"))
channel.basic_publish(exchange="test-exchange", routing_key="key", content=Content("three"))
#check that the queue now reports 3 messages:
reply = channel.queue_declare(queue="test-queue")
self.assertEqual(3, reply.message_count)
#now do the purge, then test that three messages are purged and the count drops to 0
reply = channel.queue_purge(queue="test-queue");
self.assertEqual(3, reply.message_count)
reply = channel.queue_declare(queue="test-queue")
self.assertEqual(0, reply.message_count)
#send a further message and consume it, ensuring that the other messages are really gone
channel.basic_publish(exchange="test-exchange", routing_key="key", content=Content("four"))
reply = channel.basic_consume(queue="test-queue", no_ack=True)
queue = self.client.queue(reply.consumer_tag)
msg = queue.get(timeout=1)
self.assertEqual("four", msg.content.body)
#check error conditions (use new channels):
channel = self.client.channel(2)
channel.channel_open()
try:
#queue specified but doesn't exist:
channel.queue_purge(queue="invalid-queue")
self.fail("Expected failure when purging non-existent queue")
except Closed, e:
self.assertChannelException(404, e.args[0])
channel = self.client.channel(3)
channel.channel_open()
try:
#queue not specified and none previously declared for channel:
channel.queue_purge()
self.fail("Expected failure when purging unspecified queue")
except Closed, e:
self.assertConnectionException(530, e.args[0])
#cleanup
other = self.connect()
channel = other.channel(1)
channel.channel_open()
channel.exchange_delete(exchange="test-exchange")
def test_declare_exclusive(self):
"""
Test that the exclusive field is honoured in queue.declare
"""
# TestBase.setUp has already opened channel(1)
c1 = self.channel
# Here we open a second separate connection:
other = self.connect()
c2 = other.channel(1)
c2.channel_open()
#declare an exclusive queue:
c1.queue_declare(queue="exclusive-queue", exclusive="True")
try:
#other connection should not be allowed to declare this:
c2.queue_declare(queue="exclusive-queue", exclusive="True")
self.fail("Expected second exclusive queue_declare to raise a channel exception")
except Closed, e:
self.assertChannelException(405, e.args[0])
def test_declare_passive(self):
"""
Test that the passive field is honoured in queue.declare
"""
channel = self.channel
#declare an exclusive queue:
channel.queue_declare(queue="passive-queue-1", exclusive="True")
channel.queue_declare(queue="passive-queue-1", passive="True")
try:
#other connection should not be allowed to declare this:
channel.queue_declare(queue="passive-queue-2", passive="True")
self.fail("Expected passive declaration of non-existant queue to raise a channel exception")
except Closed, e:
self.assertChannelException(404, e.args[0])
def test_bind(self):
"""
Test various permutations of the queue.bind method
"""
channel = self.channel
channel.queue_declare(queue="queue-1", exclusive="True")
#straightforward case, both exchange & queue exist so no errors expected:
channel.queue_bind(queue="queue-1", exchange="amq.direct", routing_key="key1")
#bind the default queue for the channel (i.e. last one declared):
channel.queue_bind(exchange="amq.direct", routing_key="key2")
#use the queue name where neither routing key nor queue are specified:
channel.queue_bind(exchange="amq.direct")
#try and bind to non-existant exchange
try:
channel.queue_bind(queue="queue-1", exchange="an-invalid-exchange", routing_key="key1")
self.fail("Expected bind to non-existant exchange to fail")
except Closed, e:
self.assertChannelException(404, e.args[0])
#need to reopen a channel:
channel = self.client.channel(2)
channel.channel_open()
#try and bind non-existant queue:
try:
channel.queue_bind(queue="queue-2", exchange="amq.direct", routing_key="key1")
self.fail("Expected bind of non-existant queue to fail")
except Closed, e:
self.assertChannelException(404, e.args[0])
def test_delete_simple(self):
"""
Test basic queue deletion
"""
channel = self.channel
#straight-forward case:
channel.queue_declare(queue="delete-me")
channel.basic_publish(routing_key="delete-me", content=Content("a"))
channel.basic_publish(routing_key="delete-me", content=Content("b"))
channel.basic_publish(routing_key="delete-me", content=Content("c"))
reply = channel.queue_delete(queue="delete-me")
self.assertEqual(3, reply.message_count)
#check that it has gone be declaring passively
try:
channel.queue_declare(queue="delete-me", passive="True")
self.fail("Queue has not been deleted")
except Closed, e:
self.assertChannelException(404, e.args[0])
#check attempted deletion of non-existant queue is handled correctly:
channel = self.client.channel(2)
channel.channel_open()
try:
channel.queue_delete(queue="i-dont-exist", if_empty="True")
self.fail("Expected delete of non-existant queue to fail")
except Closed, e:
self.assertChannelException(404, e.args[0])
def test_delete_ifempty(self):
"""
Test that if_empty field of queue_delete is honoured
"""
channel = self.channel
#create a queue and add a message to it (use default binding):
channel.queue_declare(queue="delete-me-2")
channel.queue_declare(queue="delete-me-2", passive="True")
channel.basic_publish(routing_key="delete-me-2", content=Content("message"))
#try to delete, but only if empty:
try:
channel.queue_delete(queue="delete-me-2", if_empty="True")
self.fail("Expected delete if_empty to fail for non-empty queue")
except Closed, e:
self.assertChannelException(406, e.args[0])
#need new channel now:
channel = self.client.channel(2)
channel.channel_open()
#empty queue:
reply = channel.basic_consume(queue="delete-me-2", no_ack=True)
queue = self.client.queue(reply.consumer_tag)
msg = queue.get(timeout=1)
self.assertEqual("message", msg.content.body)
channel.basic_cancel(consumer_tag=reply.consumer_tag)
#retry deletion on empty queue:
channel.queue_delete(queue="delete-me-2", if_empty="True")
#check that it has gone by declaring passively:
try:
channel.queue_declare(queue="delete-me-2", passive="True")
self.fail("Queue has not been deleted")
except Closed, e:
self.assertChannelException(404, e.args[0])
def test_delete_ifunused(self):
"""
Test that if_unused field of queue_delete is honoured
"""
channel = self.channel
#create a queue and register a consumer:
channel.queue_declare(queue="delete-me-3")
channel.queue_declare(queue="delete-me-3", passive="True")
reply = channel.basic_consume(queue="delete-me-3", no_ack=True)
#need new channel now:
channel2 = self.client.channel(2)
channel2.channel_open()
#try to delete, but only if empty:
try:
channel2.queue_delete(queue="delete-me-3", if_unused="True")
self.fail("Expected delete if_unused to fail for queue with existing consumer")
except Closed, e:
self.assertChannelException(406, e.args[0])
channel.basic_cancel(consumer_tag=reply.consumer_tag)
channel.queue_delete(queue="delete-me-3", if_unused="True")
#check that it has gone by declaring passively:
try:
channel.queue_declare(queue="delete-me-3", passive="True")
self.fail("Queue has not been deleted")
except Closed, e:
self.assertChannelException(404, e.args[0])
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