/**
 * Copyright (c) 2021 OceanBase
 * OceanBase CE is licensed under Mulan PubL v2.
 * You can use this software according to the terms and conditions of the Mulan PubL v2.
 * You may obtain a copy of Mulan PubL v2 at:
 *          http://license.coscl.org.cn/MulanPubL-2.0
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PubL v2 for more details.
 */

#include <gtest/gtest.h>
#include "lib/ob_errno.h"
#include "lib/oblog/ob_log.h"
#include "common/storage/ob_sequence.h"
#include "lib/time/ob_time_utility.h"

namespace oceanbase
{
using namespace common;
namespace unittest
{

class TestObSequence : public ::testing::Test
{
public :
  virtual void SetUp() {}
  virtual void TearDown() {}
};

//////////////////////基本功能测试//////////////////////////////////////////

TEST_F(TestObSequence, get_max_seq_no)
{
  TRANS_LOG(INFO, "called", "func", test_info_->name());
  int64_t seq_no = ObSequence::get_max_seq_no();

  EXPECT_TRUE(seq_no <= ObTimeUtility::current_time());
  EXPECT_TRUE(seq_no > 0);
  EXPECT_EQ(ObSequence::inc_and_get_max_seq_no(), seq_no + 1);
  ObSequence::inc();
  EXPECT_EQ(ObSequence::get_max_seq_no(), seq_no + 2);
}

TEST_F(TestObSequence, update_max_seq_no)
{
  TRANS_LOG(INFO, "called", "func", test_info_->name());

  int64_t seq_no = ObSequence::get_max_seq_no();

  ObSequence::update_max_seq_no(0);
  EXPECT_TRUE(ObSequence::get_max_seq_no() >= seq_no);

  seq_no = ObSequence::get_max_seq_no();
  ObSequence::update_max_seq_no(-1);
  EXPECT_TRUE(ObSequence::get_max_seq_no() >= seq_no);

  seq_no = ObSequence::get_max_seq_no();
  ObSequence::update_max_seq_no(1);
  EXPECT_TRUE(ObSequence::get_max_seq_no() >= seq_no);

  seq_no = ObSequence::get_max_seq_no();
  ObSequence::update_max_seq_no(seq_no);
  EXPECT_TRUE(ObSequence::get_max_seq_no() > seq_no);

  seq_no = ObSequence::get_max_seq_no();
  ObSequence::update_max_seq_no(seq_no + 1000000);
  EXPECT_EQ(ObSequence::get_max_seq_no(), seq_no + 1000001);
}

}//end of unittest
}//end of oceanbase

using namespace oceanbase;
using namespace oceanbase::common;

int main(int argc, char **argv)
{
  int ret = 1;
  ObLogger &logger = ObLogger::get_logger();
  logger.set_file_name("test_ob_sequence.log", true);
  logger.set_log_level(OB_LOG_LEVEL_INFO);
  testing::InitGoogleTest(&argc, argv);
  ret = RUN_ALL_TESTS();
  return ret;
}