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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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/unittest/unittest.h"
#include "mongo/util/clock_source_mock.h"
#include "mongo/util/clock_tick_source.h"
#include "mongo/util/tick_source.h"
#include "mongo/util/tick_source_mock.h"
#include "mongo/util/time_support.h"
namespace mongo {
namespace {
TEST(TickSourceTest, TicksToDurationConversion) {
TickSourceMock<Seconds> tsSecs;
tsSecs.reset(1);
ASSERT_EQ(tsSecs.ticksTo<Seconds>(tsSecs.getTicks()).count(), 1);
ASSERT_EQ(tsSecs.ticksTo<Milliseconds>(tsSecs.getTicks()).count(), 1000);
ASSERT_EQ(tsSecs.ticksTo<Microseconds>(tsSecs.getTicks()).count(), 1000 * 1000);
TickSourceMock<Milliseconds> tsMillis;
tsMillis.reset(1);
ASSERT_EQ(tsMillis.ticksTo<Milliseconds>(tsMillis.getTicks()).count(), 1);
ASSERT_EQ(tsMillis.ticksTo<Microseconds>(tsMillis.getTicks()).count(), 1000);
TickSourceMock<Microseconds> tsMicros;
tsMicros.reset(1);
ASSERT_EQ(tsMicros.ticksTo<Microseconds>(tsMicros.getTicks()).count(), 1);
}
TEST(TickSourceTest, SpansToDurationConversion) {
TickSourceMock<Seconds> tsSecs;
tsSecs.reset(0);
TickSource::Tick zero = tsSecs.getTicks();
tsSecs.reset(10);
TickSource::Tick ten = tsSecs.getTicks();
ASSERT_EQ(tsSecs.spanTo<Seconds>(zero, ten).count(), 10);
ASSERT_EQ(tsSecs.spanTo<Seconds>(ten, zero).count(), 0);
ASSERT_EQ(tsSecs.spanTo<Milliseconds>(zero, ten).count(), 10 * 1000);
ASSERT_EQ(tsSecs.spanTo<Milliseconds>(ten, zero).count(), 0);
ASSERT_EQ(tsSecs.spanTo<Microseconds>(zero, ten).count(), 10 * 1000 * 1000);
ASSERT_EQ(tsSecs.spanTo<Microseconds>(ten, zero).count(), 0);
}
TEST(TickSourceTest, ClockTickSourceTest) {
ClockSourceMock mockSource;
std::unique_ptr<TickSource> ts = std::make_unique<ClockTickSource>(&mockSource);
auto start = ts->getTicks();
mockSource.advance(Milliseconds(10));
auto end = ts->getTicks();
auto elapsedSecs = ts->spanTo<Seconds>(start, end).count();
auto elapsedMils = ts->spanTo<Milliseconds>(start, end).count();
auto elapsedMics = ts->spanTo<Microseconds>(start, end).count();
ASSERT_LT(elapsedSecs, 1);
ASSERT_GTE(elapsedSecs, 0);
ASSERT_LTE(elapsedMils, 11);
ASSERT_GTE(elapsedMils, 10);
ASSERT_LTE(elapsedMics, 11 * 1000);
ASSERT_GTE(elapsedMics, 10 * 1000);
}
} // namespace
} // namespace mongo
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