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/**
* Copyright (C) 2022-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/bson/bsonobjbuilder.h"
#include "mongo/db/exec/sbe/values/bson.h"
#include "mongo/db/exec/sbe/values/value.h"
#include "mongo/db/query/stats/array_histogram.h"
#include "mongo/db/query/stats/scalar_histogram.h"
#include "mongo/db/query/stats/stats_gen.h"
#include "mongo/unittest/unittest.h"
#include "mongo/util/assert_util.h"
namespace mongo::stats {
namespace {
IDLParserContext ctx("StatsPath");
/**
* Validate round trip conversion for histogram bucket
*/
TEST(StatsPath, BasicValidStatsBucketDouble) {
// Create & parse StatsBucket.
auto serializedBucket = Bucket{3.0, 4.0, 15.0, 2.0, 6.0}.serialize();
auto parsedBucket = StatsBucket::parse(ctx, serializedBucket);
// Round-trip conversion.
auto bucketToBSON = parsedBucket.toBSON();
ASSERT_BSONOBJ_EQ(serializedBucket, bucketToBSON);
}
/**
* Validate round-trip conversion for StatsPath datatype.
*/
TEST(StatsPath, BasicValidStatsPath) {
// Initialize histogram buckets.
constexpr double doubleCount = 15.0;
constexpr double trueCount = 12.0;
constexpr double falseCount = 16.0;
constexpr double numDocs = doubleCount + trueCount + falseCount;
std::vector<Bucket> buckets{
Bucket{1.0, 0.0, 1.0, 0.0, 1.0},
Bucket{2.0, 5.0, 8.0, 1.0, 3.0},
Bucket{3.0, 4.0, 15.0, 2.0, 6.0},
};
// Initialize histogram bounds.
auto [boundsTag, boundsVal] = sbe::value::makeNewArray();
sbe::value::ValueGuard boundsGuard{boundsTag, boundsVal};
auto bounds = sbe::value::getArrayView(boundsVal);
bounds->push_back(sbe::value::TypeTags::NumberDouble, 1.0);
bounds->push_back(sbe::value::TypeTags::NumberDouble, 2.0);
bounds->push_back(sbe::value::TypeTags::NumberDouble, 3.0);
// Create a scalar histogram.
TypeCounts tc{
{sbe::value::TypeTags::NumberDouble, doubleCount},
{sbe::value::TypeTags::Boolean, trueCount + falseCount},
};
const auto sh = ScalarHistogram::make(*bounds, buckets);
auto ah = ArrayHistogram::make(std::move(sh), tc, numDocs, trueCount, falseCount);
// Serialize to BSON.
constexpr double sampleRate = 1.0;
auto serializedPath = stats::makeStatsPath("somePath", numDocs, sampleRate, ah);
// Parse StatsPath via IDL & serialize to BSON.
auto parsedPath = StatsPath::parse(ctx, serializedPath);
auto parsedPathToBSON = parsedPath.toBSON();
// We should end up with the same serialized BSON in the end.
ASSERT_BSONOBJ_EQ(serializedPath, parsedPathToBSON);
}
/**
* Validate round-trip conversion for StatsPath datatype.
*/
TEST(StatsPath, BasicValidEmptyStatsPath) {
// Initialize histogram buckets.
constexpr double numDocs = 0.0;
std::vector<Bucket> buckets;
// Create an empty scalar histogram.
auto ah = ArrayHistogram::make(ScalarHistogram::make(), TypeCounts{}, 0.0 /* sampleSize */);
// Serialize to BSON.
constexpr double sampleRate = 1.0;
auto serializedPath = stats::makeStatsPath("someEmptyPath", numDocs, sampleRate, ah);
// Parse StatsPath via IDL & serialize to BSON.
auto parsedPath = StatsPath::parse(ctx, serializedPath);
auto parsedPathToBSON = parsedPath.toBSON();
// We should end up with the same serialized BSON in the end.
ASSERT_BSONOBJ_EQ(serializedPath, parsedPathToBSON);
}
} // namespace
} // namespace mongo::stats
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