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/**
* Copyright (C) 2016 10gen 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 "mongo/stdx/memory.h"
#include "mongo/unittest/unittest.h"
#include "mongo/util/background_thread_clock_source.h"
#include "mongo/util/clock_source.h"
#include "mongo/util/clock_source_mock.h"
#include "mongo/util/time_support.h"
namespace {
using namespace mongo;
class BTCSTest : public mongo::unittest::Test {
public:
void setUpClocks(Milliseconds granularity) {
auto csMock = stdx::make_unique<ClockSourceMock>();
_csMock = csMock.get();
_btcs = stdx::make_unique<BackgroundThreadClockSource>(std::move(csMock), granularity);
}
protected:
std::unique_ptr<ClockSource> _btcs;
ClockSourceMock* _csMock;
};
TEST_F(BTCSTest, CreateAndTerminate) {
setUpClocks(Milliseconds(1));
_btcs.reset(); // destroys the clock source
setUpClocks(Hours(48));
_btcs.reset();
}
TEST_F(BTCSTest, TimeKeeping) {
setUpClocks(Milliseconds(1));
ASSERT_EQUALS(_btcs->now(), _csMock->now());
_csMock->advance(Milliseconds(100));
sleepFor(Seconds(1)); // give the _btcs opportunity to read the new time
ASSERT_EQUALS(_btcs->now(), _csMock->now());
}
TEST_F(BTCSTest, GetPrecision) {
setUpClocks(Milliseconds(1));
ASSERT_EQUALS(_btcs->getPrecision(), Milliseconds(1));
}
} // namespace
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