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/**
* Copyright (C) 2018 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#include "mongo/platform/basic.h"
#include <array>
#include <cstdint>
#include <limits>
#include "mongo/base/string_data.h"
#include "mongo/unittest/unittest.h"
#include "mongo/util/decimal_counter.h"
namespace {
using namespace mongo;
TEST(DecimalCounter, CountUntilWrapAround) {
DecimalCounter<uint16_t> counter;
uint16_t check = 0;
do {
StringData str = counter;
ASSERT_EQ(std::to_string(check), str.toString());
ASSERT_EQ(str.rawData()[str.size()], '\0');
ASSERT_EQ(uint16_t(++counter), ++check);
} while (check);
ASSERT_EQ(StringData(counter), "0"_sd);
}
} // namespace
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