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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/db/operation_id.h"
#include "mongo/logv2/log.h"
#include "mongo/platform/mutex.h"
#include "mongo/unittest/death_test.h"
#include "mongo/unittest/unittest.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kTest
namespace mongo {
namespace {
using UniqueOperationIdRegistryTestHarness =
UniqueOperationIdRegistry::UniqueOperationIdRegistryTestHarness;
TEST(OperationIdTest, OperationIdIncrementsProperly) {
auto registry = UniqueOperationIdRegistry::create();
auto slot = registry->acquireSlot();
ASSERT_EQ(slot.getId(), 1);
{
auto slot2 = registry->acquireSlot();
ASSERT_EQ(slot2.getId(), 2);
}
ASSERT(UniqueOperationIdRegistryTestHarness::isActive(*registry, 1));
ASSERT(!UniqueOperationIdRegistryTestHarness::isActive(*registry, 2));
slot = registry->acquireSlot();
ASSERT_EQ(slot.getId(), 3);
ASSERT(!UniqueOperationIdRegistryTestHarness::isActive(*registry, 1));
ASSERT(UniqueOperationIdRegistryTestHarness::isActive(*registry, 3));
}
TEST(OperationIdTest, OperationIdsAreUnique) {
auto registry = UniqueOperationIdRegistry::create();
auto slot = registry->acquireSlot();
ASSERT_EQ(slot.getId(), 1);
auto slot2 = registry->acquireSlot();
ASSERT_EQ(slot2.getId(), 2);
// If the registry's state points to a currently active operation ID, we will
// find the next hole and issue that instead.
UniqueOperationIdRegistryTestHarness::setNextOpId(*registry, 1);
auto slot3 = registry->acquireSlot();
ASSERT_EQ(slot3.getId(), 3);
ASSERT(UniqueOperationIdRegistryTestHarness::isActive(*registry, 1));
ASSERT(UniqueOperationIdRegistryTestHarness::isActive(*registry, 2));
ASSERT(UniqueOperationIdRegistryTestHarness::isActive(*registry, 3));
}
TEST(OperationIdTest, OperationIdsAreMovable) {
auto registry = UniqueOperationIdRegistry::create();
auto slot = registry->acquireSlot();
ASSERT_EQ(slot.getId(), 1);
ASSERT(UniqueOperationIdRegistryTestHarness::isActive(*registry, 1));
auto moveSlot(std::move(slot));
ASSERT_EQ(moveSlot.getId(), 1);
ASSERT(UniqueOperationIdRegistryTestHarness::isActive(*registry, 1));
auto assignSlot = std::move(moveSlot);
ASSERT_EQ(assignSlot.getId(), 1);
ASSERT(UniqueOperationIdRegistryTestHarness::isActive(*registry, 1));
}
DEATH_TEST(OperationIdTest, TooManyTransactionsShouldCrash, "invariant") {
auto registry = UniqueOperationIdRegistry::create();
std::vector<OperationIdSlot> slots;
while (true) {
slots.push_back(registry->acquireSlot());
}
}
} // namespace
} // namespace mongo
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