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// sorted_data_interface_test_spaceused.cpp
/**
* Copyright (C) 2014 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/db/storage/sorted_data_interface_test_harness.h"
#include <boost/scoped_ptr.hpp>
#include "mongo/db/storage/sorted_data_interface.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
using boost::scoped_ptr;
// Verify that an empty index takes up no space.
TEST( SortedDataInterface, GetSpaceUsedBytesEmpty ) {
scoped_ptr<HarnessHelper> harnessHelper( newHarnessHelper() );
scoped_ptr<SortedDataInterface> sorted( harnessHelper->newSortedDataInterface( false ) );
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT( sorted->isEmpty( opCtx.get() ) );
}
// SERVER-15416 mmapv1 test harness does not use SimpleRecordStoreV1 as its record store
// and HeapRecordStoreBtree::dataSize does not have an actual implementation
// {
// scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
// ASSERT( sorted->getSpaceUsedBytes( opCtx.get() ) == 0 );
// }
}
// Verify that a nonempty index takes up some space.
TEST( SortedDataInterface, GetSpaceUsedBytesNonEmpty ) {
scoped_ptr<HarnessHelper> harnessHelper( newHarnessHelper() );
scoped_ptr<SortedDataInterface> sorted( harnessHelper->newSortedDataInterface( false ) );
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT( sorted->isEmpty( opCtx.get() ) );
}
int nToInsert = 10;
for ( int i = 0; i < nToInsert; i++ ) {
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
{
WriteUnitOfWork uow( opCtx.get() );
BSONObj key = BSON( "" << i );
RecordId loc( 42, i * 2 );
ASSERT_OK( sorted->insert( opCtx.get(), key, loc, true ) );
uow.commit();
}
}
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT_EQUALS( nToInsert, sorted->numEntries( opCtx.get() ) );
}
// SERVER-15416 mmapv1 test harness does not use SimpleRecordStoreV1 as its record store
// and HeapRecordStoreBtree::dataSize does not have an actual implementation
// long long spaceUsedBytes;
// {
// scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
// spaceUsedBytes = sorted->getSpaceUsedBytes( opCtx.get() );
// ASSERT( spaceUsedBytes > 0 );
// }
// {
// // getSpaceUsedBytes() returns the same value when called multiple times
// // and there were not interleaved write operations.
// scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
// ASSERT_EQUALS( spaceUsedBytes, sorted->getSpaceUsedBytes( opCtx.get() ) );
// ASSERT_EQUALS( spaceUsedBytes, sorted->getSpaceUsedBytes( opCtx.get() ) );
// }
}
} // namespace mongo
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