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// Copyright (c) 2012-2013 The Cryptonote developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include "gtest/gtest.h"

#include "cryptonote_core/checkpoints.cpp"

using namespace cryptonote;


TEST(checkpoints_is_alternative_block_allowed, handles_empty_checkpoins)
{
  checkpoints cp;

  ASSERT_FALSE(cp.is_alternative_block_allowed(0, 0));

  ASSERT_TRUE(cp.is_alternative_block_allowed(1, 1));
  ASSERT_TRUE(cp.is_alternative_block_allowed(1, 9));
  ASSERT_TRUE(cp.is_alternative_block_allowed(9, 1));
}

TEST(checkpoints_is_alternative_block_allowed, handles_one_checkpoint)
{
  checkpoints cp;
  cp.add_checkpoint(5, "0000000000000000000000000000000000000000000000000000000000000000");

  ASSERT_FALSE(cp.is_alternative_block_allowed(0, 0));

  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 1));
  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 4));
  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 5));
  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 6));
  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 9));

  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 1));
  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 4));
  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 5));
  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 6));
  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 9));

  ASSERT_FALSE(cp.is_alternative_block_allowed(5, 1));
  ASSERT_FALSE(cp.is_alternative_block_allowed(5, 4));
  ASSERT_FALSE(cp.is_alternative_block_allowed(5, 5));
  ASSERT_TRUE (cp.is_alternative_block_allowed(5, 6));
  ASSERT_TRUE (cp.is_alternative_block_allowed(5, 9));

  ASSERT_FALSE(cp.is_alternative_block_allowed(6, 1));
  ASSERT_FALSE(cp.is_alternative_block_allowed(6, 4));
  ASSERT_FALSE(cp.is_alternative_block_allowed(6, 5));
  ASSERT_TRUE (cp.is_alternative_block_allowed(6, 6));
  ASSERT_TRUE (cp.is_alternative_block_allowed(6, 9));

  ASSERT_FALSE(cp.is_alternative_block_allowed(9, 1));
  ASSERT_FALSE(cp.is_alternative_block_allowed(9, 4));
  ASSERT_FALSE(cp.is_alternative_block_allowed(9, 5));
  ASSERT_TRUE (cp.is_alternative_block_allowed(9, 6));
  ASSERT_TRUE (cp.is_alternative_block_allowed(9, 9));
}

TEST(checkpoints_is_alternative_block_allowed, handles_two_and_more_checkpoints)
{
  checkpoints cp;
  cp.add_checkpoint(5, "0000000000000000000000000000000000000000000000000000000000000000");
  cp.add_checkpoint(9, "0000000000000000000000000000000000000000000000000000000000000000");

  ASSERT_FALSE(cp.is_alternative_block_allowed(0, 0));

  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 1));
  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 4));
  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 5));
  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 6));
  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 8));
  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 9));
  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 10));
  ASSERT_TRUE (cp.is_alternative_block_allowed(1, 11));

  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 1));
  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 4));
  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 5));
  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 6));
  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 8));
  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 9));
  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 10));
  ASSERT_TRUE (cp.is_alternative_block_allowed(4, 11));

  ASSERT_FALSE(cp.is_alternative_block_allowed(5, 1));
  ASSERT_FALSE(cp.is_alternative_block_allowed(5, 4));
  ASSERT_FALSE(cp.is_alternative_block_allowed(5, 5));
  ASSERT_TRUE (cp.is_alternative_block_allowed(5, 6));
  ASSERT_TRUE (cp.is_alternative_block_allowed(5, 8));
  ASSERT_TRUE (cp.is_alternative_block_allowed(5, 9));
  ASSERT_TRUE (cp.is_alternative_block_allowed(5, 10));
  ASSERT_TRUE (cp.is_alternative_block_allowed(5, 11));

  ASSERT_FALSE(cp.is_alternative_block_allowed(6, 1));
  ASSERT_FALSE(cp.is_alternative_block_allowed(6, 4));
  ASSERT_FALSE(cp.is_alternative_block_allowed(6, 5));
  ASSERT_TRUE (cp.is_alternative_block_allowed(6, 6));
  ASSERT_TRUE (cp.is_alternative_block_allowed(6, 8));
  ASSERT_TRUE (cp.is_alternative_block_allowed(6, 9));
  ASSERT_TRUE (cp.is_alternative_block_allowed(6, 10));
  ASSERT_TRUE (cp.is_alternative_block_allowed(6, 11));

  ASSERT_FALSE(cp.is_alternative_block_allowed(8, 1));
  ASSERT_FALSE(cp.is_alternative_block_allowed(8, 4));
  ASSERT_FALSE(cp.is_alternative_block_allowed(8, 5));
  ASSERT_TRUE (cp.is_alternative_block_allowed(8, 6));
  ASSERT_TRUE (cp.is_alternative_block_allowed(8, 8));
  ASSERT_TRUE (cp.is_alternative_block_allowed(8, 9));
  ASSERT_TRUE (cp.is_alternative_block_allowed(8, 10));
  ASSERT_TRUE (cp.is_alternative_block_allowed(8, 11));

  ASSERT_FALSE(cp.is_alternative_block_allowed(9, 1));
  ASSERT_FALSE(cp.is_alternative_block_allowed(9, 4));
  ASSERT_FALSE(cp.is_alternative_block_allowed(9, 5));
  ASSERT_FALSE(cp.is_alternative_block_allowed(9, 6));
  ASSERT_FALSE(cp.is_alternative_block_allowed(9, 8));
  ASSERT_FALSE(cp.is_alternative_block_allowed(9, 9));
  ASSERT_TRUE (cp.is_alternative_block_allowed(9, 10));
  ASSERT_TRUE (cp.is_alternative_block_allowed(9, 11));

  ASSERT_FALSE(cp.is_alternative_block_allowed(10, 1));
  ASSERT_FALSE(cp.is_alternative_block_allowed(10, 4));
  ASSERT_FALSE(cp.is_alternative_block_allowed(10, 5));
  ASSERT_FALSE(cp.is_alternative_block_allowed(10, 6));
  ASSERT_FALSE(cp.is_alternative_block_allowed(10, 8));
  ASSERT_FALSE(cp.is_alternative_block_allowed(10, 9));
  ASSERT_TRUE (cp.is_alternative_block_allowed(10, 10));
  ASSERT_TRUE (cp.is_alternative_block_allowed(10, 11));

  ASSERT_FALSE(cp.is_alternative_block_allowed(11, 1));
  ASSERT_FALSE(cp.is_alternative_block_allowed(11, 4));
  ASSERT_FALSE(cp.is_alternative_block_allowed(11, 5));
  ASSERT_FALSE(cp.is_alternative_block_allowed(11, 6));
  ASSERT_FALSE(cp.is_alternative_block_allowed(11, 8));
  ASSERT_FALSE(cp.is_alternative_block_allowed(11, 9));
  ASSERT_TRUE (cp.is_alternative_block_allowed(11, 10));
  ASSERT_TRUE (cp.is_alternative_block_allowed(11, 11));
}
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