text: // Copyright (c) 2017, The myobcoin Project
  // 
  // All rights reserved.
  // 
  // Redistribution and use in source and binary forms, with or without modification, are
  // permitted provided that the following conditions are met:
  // 
  // 1. Redistributions of source code must retain the above copyright notice, this list of
  //    conditions and the following disclaimer.
  // 
  // 2. Redistributions in binary form must reproduce the above copyright notice, this list
  //    of conditions and the following disclaimer in the documentation and/or other
  //    materials provided with the distribution.
  // 
  // 3. Neither the name of the copyright holder nor the names of its contributors may be
  //    used to endorse or promote products derived from this software without specific
  //    prior written permission.
  // 
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  // THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  #include <boost/uuid/uuid.hpp>
  #include "gtest/gtest.h"
  #include "crypto/crypto.h"
  #include "cryptonote_protocol/cryptonote_protocol_defs.h"
  #include "cryptonote_protocol/block_queue.h"
  
  static const boost::uuids::uuid &uuid1()
  {
    static const boost::uuids::uuid uuid = crypto::rand<boost::uuids::uuid>();
    return uuid;
  }
  
  static const boost::uuids::uuid &uuid2()
  {
    static const boost::uuids::uuid uuid = crypto::rand<boost::uuids::uuid>();
    return uuid;
  }
  
  TEST(block_queue, empty)
  {
    cryptonote::block_queue bq;
    ASSERT_EQ(bq.get_max_block_height(), 0);
  }
  
  TEST(block_queue, add_stepwise)
  {
    cryptonote::block_queue bq;
    bq.add_blocks(0, 200, uuid1());
    ASSERT_EQ(bq.get_max_block_height(), 199);
    bq.add_blocks(200, 200, uuid1());
    ASSERT_EQ(bq.get_max_block_height(), 399);
    bq.add_blocks(401, 200, uuid1());
    ASSERT_EQ(bq.get_max_block_height(), 600);
    bq.add_blocks(400, 10, uuid1());
    ASSERT_EQ(bq.get_max_block_height(), 600);
  }
  
  TEST(block_queue, flush_uuid)
  {
    cryptonote::block_queue bq;
  
    bq.add_blocks(0, 200, uuid1());
    ASSERT_EQ(bq.get_max_block_height(), 199);
    bq.add_blocks(200, 200, uuid2());
    ASSERT_EQ(bq.get_max_block_height(), 399);
    bq.flush_spans(uuid2());
    ASSERT_EQ(bq.get_max_block_height(), 199);
    bq.flush_spans(uuid1());
    ASSERT_EQ(bq.get_max_block_height(), 0);
  
    bq.add_blocks(0, 200, uuid1());
    ASSERT_EQ(bq.get_max_block_height(), 199);
    bq.add_blocks(200, 200, uuid2());
    ASSERT_EQ(bq.get_max_block_height(), 399);
    bq.flush_spans(uuid1());
    ASSERT_EQ(bq.get_max_block_height(), 399);
    bq.add_blocks(0, 200, uuid1());
    ASSERT_EQ(bq.get_max_block_height(), 399);
  }
  