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from qpid.client import Client, Closed
from qpid.queue import Empty
from qpid.content import Content
from qpid.testlib import testrunner, TestBase

class UnbindTests(TestBase):
    """Tests for the unbind method introduced in 0-9"""
    def test_unbind_direct(self):
        self.unbind_test(exchange="amq.direct", routing_key="key")

    def test_unbind_topic(self):
        self.unbind_test(exchange="amq.topic", routing_key="key")

    def test_unbind_fanout(self):
        self.unbind_test(exchange="amq.fanout")

    def test_unbind_headers(self):
        self.unbind_test(exchange="amq.match", args={ "x-match":"all", "a":"b"}, headers={"a":"b"})

    def unbind_test(self, exchange, routing_key="", args={}, headers={}):
        #bind two queues and consume from them
        channel = self.channel
        
        self.queue_declare(queue="unbind-queue-1")
        self.queue_declare(queue="unbind-queue-2")

        channel.basic_consume(queue="unbind-queue-1", consumer_tag="unbind-queue-1", no_ack=True)
        channel.basic_consume(queue="unbind-queue-2", consumer_tag="unbind-queue-2", no_ack=True)

        queue1 = self.client.queue("unbind-queue-1")
        queue2 = self.client.queue("unbind-queue-2")

        channel.queue_bind(exchange=exchange, queue="unbind-queue-1", routing_key=routing_key, arguments=args)
        channel.queue_bind(exchange=exchange, queue="unbind-queue-2", routing_key=routing_key, arguments=args)

        #send a message that will match both bindings
        channel.basic_publish(exchange=exchange, routing_key=routing_key, content=Content("one", properties={'headers':headers}))
        
        #unbind first queue
        channel.queue_unbind(exchange=exchange, queue="unbind-queue-1", routing_key=routing_key, arguments=args)
        
        #send another message
        channel.basic_publish(exchange=exchange, routing_key=routing_key, content=Content("two", properties={'headers':headers}))

        #check one queue has both messages and the other has only one
        self.assertEquals("one", queue1.get(timeout=1).content.body)
        try:
            msg = queue1.get(timeout=1)
            self.fail("Got extra message: %s" % msg.content.body)
        except Empty: pass

        self.assertEquals("one", queue2.get(timeout=1).content.body)
        self.assertEquals("two", queue2.get(timeout=1).content.body)
        try:
            msg = queue2.get(timeout=1)
            self.fail("Got extra message: " + msg)
        except Empty: pass