~drizzle-trunk/drizzle/development

/* -*- mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2010 Andrew Hutchings

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#include "config.h"

#include <gtest/gtest.h>

#include "drizzled/global_buffer.h"

TEST(global_buffer, overflow)

{

  drizzled::global_buffer_constraint<uint64_t> test_buffer(1024);

  ASSERT_TRUE(test_buffer.add(512));

  ASSERT_TRUE(test_buffer.add(512));

  ASSERT_FALSE(test_buffer.add(1));

}

TEST(global_buffer, subtract)

{

  drizzled::global_buffer_constraint<uint64_t> test_buffer(1024);

  ASSERT_TRUE(test_buffer.add(1024));

  ASSERT_TRUE(test_buffer.sub(512));

  ASSERT_TRUE(test_buffer.add(512));

  ASSERT_FALSE(test_buffer.add(1));

}

TEST(global_buffer, underflow)

{

  drizzled::global_buffer_constraint<uint64_t> test_buffer(1024);

  ASSERT_TRUE(test_buffer.add(10));

  ASSERT_FALSE(test_buffer.sub(11));

}

TEST(global_buffer, change_max)

{

  drizzled::global_buffer_constraint<uint64_t> test_buffer(1024);

  test_buffer.setMaxSize(512);

  ASSERT_FALSE(test_buffer.add(513));

}