 /*
 *
 * 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.
 *
 */
#include <BrokerQueue.h>
#include <QueueRegistry.h>
#include <qpid_test_plugin.h>
#include <iostream>
#include "MockChannel.h"

using namespace qpid::broker;
using namespace qpid::sys;


class TestBinding : public virtual Binding{
    bool cancelled;

public:
    TestBinding();
    virtual void cancel();
    bool isCancelled();
};

class TestConsumer : public virtual Consumer{
public:
    Message::shared_ptr last;

    virtual bool deliver(Message::shared_ptr& msg);
};


class QueueTest : public CppUnit::TestCase  
{
    CPPUNIT_TEST_SUITE(QueueTest);
    CPPUNIT_TEST(testConsumers);
    CPPUNIT_TEST(testBinding);
    CPPUNIT_TEST(testRegistry);
    CPPUNIT_TEST(testDequeue);
    CPPUNIT_TEST_SUITE_END();

  public:
    Message::shared_ptr message(std::string exchange, std::string routingKey) {
        return Message::shared_ptr(
            new BasicMessage(0, exchange, routingKey, true, true,
                             MockChannel::basicGetBody()));
    }
    
    void testConsumers(){
        Queue::shared_ptr queue(new Queue("my_queue", true));
    
        //Test adding consumers:
        TestConsumer c1; 
        TestConsumer c2; 
        queue->consume(&c1);
        queue->consume(&c2);

        CPPUNIT_ASSERT_EQUAL(uint32_t(2), queue->getConsumerCount());
        
        //Test basic delivery:
        Message::shared_ptr msg1 = message("e", "A");
        Message::shared_ptr msg2 = message("e", "B");
        Message::shared_ptr msg3 = message("e", "C");

        queue->deliver(msg1);
        CPPUNIT_ASSERT_EQUAL(msg1.get(), c1.last.get());

        queue->deliver(msg2);
        CPPUNIT_ASSERT_EQUAL(msg2.get(), c2.last.get());
        
        queue->deliver(msg3);
        CPPUNIT_ASSERT_EQUAL(msg3.get(), c1.last.get());        
    
        //Test cancellation:
        queue->cancel(&c1);
        CPPUNIT_ASSERT_EQUAL(uint32_t(1), queue->getConsumerCount());
        queue->cancel(&c2);
        CPPUNIT_ASSERT_EQUAL(uint32_t(0), queue->getConsumerCount());
    }

    void testBinding(){
        Queue::shared_ptr queue(new Queue("my_queue", true));
        //Test bindings:
        TestBinding a;
        TestBinding b;
        queue->bound(&a);
        queue->bound(&b);    
    
        queue.reset();

        CPPUNIT_ASSERT(a.isCancelled());
        CPPUNIT_ASSERT(b.isCancelled());
    }

    void testRegistry(){
        //Test use of queues in registry:
        QueueRegistry registry;
        registry.declare("queue1", true, true);
        registry.declare("queue2", true, true);
        registry.declare("queue3", true, true);

        CPPUNIT_ASSERT(registry.find("queue1"));
        CPPUNIT_ASSERT(registry.find("queue2"));
        CPPUNIT_ASSERT(registry.find("queue3"));
        
        registry.destroy("queue1");
        registry.destroy("queue2");
        registry.destroy("queue3");

        CPPUNIT_ASSERT(!registry.find("queue1"));
        CPPUNIT_ASSERT(!registry.find("queue2"));
        CPPUNIT_ASSERT(!registry.find("queue3"));
    }

    void testDequeue(){
        Queue::shared_ptr queue(new Queue("my_queue", true));
        Message::shared_ptr msg1 = message("e", "A");
        Message::shared_ptr msg2 = message("e", "B");
        Message::shared_ptr msg3 = message("e", "C");
        Message::shared_ptr received;

        queue->deliver(msg1);
        queue->deliver(msg2);
        queue->deliver(msg3);

        CPPUNIT_ASSERT_EQUAL(uint32_t(3), queue->getMessageCount());
        
        received = queue->dequeue();
        CPPUNIT_ASSERT_EQUAL(msg1.get(), received.get());
        CPPUNIT_ASSERT_EQUAL(uint32_t(2), queue->getMessageCount());

        received = queue->dequeue();
        CPPUNIT_ASSERT_EQUAL(msg2.get(), received.get());
        CPPUNIT_ASSERT_EQUAL(uint32_t(1), queue->getMessageCount());

        TestConsumer consumer; 
        queue->consume(&consumer);
        queue->dispatch();
        CPPUNIT_ASSERT_EQUAL(msg3.get(), consumer.last.get());
        CPPUNIT_ASSERT_EQUAL(uint32_t(0), queue->getMessageCount());

        received = queue->dequeue();
        CPPUNIT_ASSERT(!received);
        CPPUNIT_ASSERT_EQUAL(uint32_t(0), queue->getMessageCount());
        
    }
};

// Make this test suite a plugin.
CPPUNIT_PLUGIN_IMPLEMENT();
CPPUNIT_TEST_SUITE_REGISTRATION(QueueTest);

//TestBinding
TestBinding::TestBinding() : cancelled(false) {}

void TestBinding::cancel(){
    CPPUNIT_ASSERT(!cancelled);
    cancelled = true;
}

bool TestBinding::isCancelled(){
    return cancelled;
}

//TestConsumer
bool TestConsumer::deliver(Message::shared_ptr& msg){
    last = msg;
    return true;
}