diff options
Diffstat (limited to 'src/mongo/db/query/stats/stats_path_test.cpp')
-rw-r--r-- | src/mongo/db/query/stats/stats_path_test.cpp | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/src/mongo/db/query/stats/stats_path_test.cpp b/src/mongo/db/query/stats/stats_path_test.cpp new file mode 100644 index 00000000000..3e3afe50b32 --- /dev/null +++ b/src/mongo/db/query/stats/stats_path_test.cpp @@ -0,0 +1,129 @@ +/** + * 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, 2.0}, + 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}, + }; + ScalarHistogram sh(*bounds, buckets); + ArrayHistogram ah(sh, tc, trueCount, falseCount); + + // Serialize to BSON. + auto serializedPath = stats::makeStatsPath("somePath", numDocs, 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; + + // Initialize histogram bounds. + auto [boundsTag, boundsVal] = sbe::value::makeNewArray(); + sbe::value::ValueGuard boundsGuard{boundsTag, boundsVal}; + auto bounds = sbe::value::getArrayView(boundsVal); + + // Create an empty scalar histogram. + TypeCounts tc; + ScalarHistogram sh(*bounds, buckets); + ArrayHistogram ah(sh, tc); + + // Serialize to BSON. + auto serializedPath = stats::makeStatsPath("someEmptyPath", numDocs, 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 |