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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 <boost/intrusive_ptr.hpp>
#include <vector>
#include "mongo/bson/bsonobj.h"
#include "mongo/bson/json.h"
#include "mongo/db/exec/document_value/document.h"
#include "mongo/db/exec/document_value/document_value_test_util.h"
#include "mongo/db/exec/document_value/value.h"
#include "mongo/db/exec/document_value/value_comparator.h"
#include "mongo/db/pipeline/aggregation_context_fixture.h"
#include "mongo/db/pipeline/document_source_bucket.h"
#include "mongo/db/pipeline/document_source_group.h"
#include "mongo/db/pipeline/document_source_mock.h"
#include "mongo/db/pipeline/document_source_sort.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
namespace {
using boost::intrusive_ptr;
using std::list;
using std::vector;
class BucketReturnsGroupAndSort : public AggregationContextFixture {
public:
void testCreateFromBsonResult(BSONObj bucketSpec, Value expectedGroupExplain) {
list<intrusive_ptr<DocumentSource>> result =
DocumentSourceBucket::createFromBson(bucketSpec.firstElement(), getExpCtx());
ASSERT_EQUALS(result.size(), 2UL);
const auto* groupStage = dynamic_cast<DocumentSourceGroup*>(result.front().get());
ASSERT(groupStage);
const auto* sortStage = dynamic_cast<DocumentSourceSort*>(result.back().get());
ASSERT(sortStage);
// Serialize the DocumentSourceGroup and DocumentSourceSort from $bucket so that we can
// check the explain output to make sure $group and $sort have the correct fields.
auto explain = ExplainOptions::Verbosity::kQueryPlanner;
vector<Value> explainedStages;
groupStage->serializeToArray(explainedStages, explain);
sortStage->serializeToArray(explainedStages, explain);
ASSERT_EQUALS(explainedStages.size(), 2UL);
auto groupExplain = explainedStages[0];
ASSERT_VALUE_EQ(groupExplain["$group"], expectedGroupExplain);
auto sortExplain = explainedStages[1];
auto expectedSortExplain = Value{Document{{"sortKey", Document{{"_id", 1}}}}};
ASSERT_VALUE_EQ(sortExplain["$sort"], expectedSortExplain);
}
};
TEST_F(BucketReturnsGroupAndSort, BucketUsesDefaultOutputWhenNoOutputSpecified) {
const auto spec =
fromjson("{$bucket : {groupBy :'$x', boundaries : [ 0, 2 ], default : 'other'}}");
auto expectedGroupExplain =
Value(fromjson("{_id : {$switch : {branches : [{case : {$and : [{$gte : ['$x', {$const : "
"0}]}, {$lt : ['$x', {$const : 2}]}]}, then : {$const : 0}}], default : "
"{$const : 'other'}}}, count : {$sum : {$const : 1}}}"));
testCreateFromBsonResult(spec, expectedGroupExplain);
}
TEST_F(BucketReturnsGroupAndSort, BucketSucceedsWhenOutputSpecified) {
const auto spec = fromjson(
"{$bucket : {groupBy : '$x', boundaries : [0, 2], output : { number : {$sum : 1}}}}");
auto expectedGroupExplain = Value(fromjson(
"{_id : {$switch : {branches : [{case : {$and : [{$gte : ['$x', {$const : 0}]}, {$lt : "
"['$x', {$const : 2}]}]}, then : {$const : 0}}]}}, number : {$sum : {$const : 1}}}"));
testCreateFromBsonResult(spec, expectedGroupExplain);
}
TEST_F(BucketReturnsGroupAndSort, BucketSucceedsWhenNoDefaultSpecified) {
const auto spec = fromjson("{$bucket : { groupBy : '$x', boundaries : [0, 2]}}");
auto expectedGroupExplain = Value(fromjson(
"{_id : {$switch : {branches : [{case : {$and : [{$gte : ['$x', {$const : 0}]}, {$lt : "
"['$x', {$const : 2}]}]}, then : {$const : 0}}]}}, count : {$sum : {$const : 1}}}"));
testCreateFromBsonResult(spec, expectedGroupExplain);
}
TEST_F(BucketReturnsGroupAndSort, BucketSucceedsWhenBoundariesAreSameCanonicalType) {
const auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : [0, 1.5]}}");
auto expectedGroupExplain = Value(fromjson(
"{_id : {$switch : {branches : [{case : {$and : [{$gte : ['$x', {$const : 0}]}, {$lt : "
"['$x', {$const : 1.5}]}]}, then : {$const : 0}}]}},count : {$sum : {$const : 1}}}"));
testCreateFromBsonResult(spec, expectedGroupExplain);
}
TEST_F(BucketReturnsGroupAndSort, BucketSucceedsWhenBoundariesAreConstantExpressions) {
const auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : [0, {$add : [4, 5]}]}}");
auto expectedGroupExplain = Value(fromjson(
"{_id : {$switch : {branches : [{case : {$and : [{$gte : ['$x', {$const : 0}]}, {$lt : "
"['$x', {$const : 9}]}]}, then : {$const : 0}}]}}, count : {$sum : {$const : 1}}}"));
testCreateFromBsonResult(spec, expectedGroupExplain);
}
TEST_F(BucketReturnsGroupAndSort, BucketSucceedsWhenDefaultIsConstantExpression) {
const auto spec =
fromjson("{$bucket : {groupBy : '$x', boundaries : [0, 1], default: {$add : [4, 5]}}}");
auto expectedGroupExplain =
Value(fromjson("{_id : {$switch : {branches : [{case : {$and : [{$gte : ['$x', {$const :"
"0}]}, {$lt : ['$x', {$const : 1}]}]}, then : {$const : 0}}], default : "
"{$const : 9}}}, count : {$sum : {$const : 1}}}"));
testCreateFromBsonResult(spec, expectedGroupExplain);
}
TEST_F(BucketReturnsGroupAndSort, BucketSucceedsWithMultipleBoundaryValues) {
auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : [0, 1, 2]}}");
auto expectedGroupExplain =
Value(fromjson("{_id : {$switch : {branches : [{case : {$and : [{$gte : ['$x', {$const : "
"0}]}, {$lt : ['$x', {$const : 1}]}]}, then : {$const : 0}}, {case : {$and "
": [{$gte : ['$x', {$const : 1}]}, {$lt : ['$x', {$const : 2}]}]}, then : "
"{$const : 1}}]}}, count : {$sum : {$const : 1}}}"));
testCreateFromBsonResult(spec, expectedGroupExplain);
}
class InvalidBucketSpec : public AggregationContextFixture {
public:
list<intrusive_ptr<DocumentSource>> createBucket(BSONObj bucketSpec) {
auto sources = DocumentSourceBucket::createFromBson(bucketSpec.firstElement(), getExpCtx());
return sources;
}
};
TEST_F(InvalidBucketSpec, BucketFailsWithNonObject) {
auto spec = fromjson("{$bucket : 1}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40201);
spec = fromjson("{$bucket : 'test'}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40201);
}
TEST_F(InvalidBucketSpec, BucketFailsWithUnknownField) {
const auto spec =
fromjson("{$bucket : {groupBy : '$x', boundaries : [0, 1, 2], unknown : 'field'}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40197);
}
TEST_F(InvalidBucketSpec, BucketFailsWithNoGroupBy) {
const auto spec = fromjson("{$bucket : {boundaries : [0, 1, 2]}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40198);
}
TEST_F(InvalidBucketSpec, BucketFailsWithNoBoundaries) {
const auto spec = fromjson("{$bucket : {groupBy : '$x'}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40198);
}
TEST_F(InvalidBucketSpec, BucketFailsWithNonExpressionGroupBy) {
auto spec = fromjson("{$bucket : {groupBy : {test : 'obj'}, boundaries : [0, 1, 2]}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40202);
spec = fromjson("{$bucket : {groupBy : 'test', boundaries : [0, 1, 2]}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40202);
spec = fromjson("{$bucket : {groupBy : 1, boundaries : [0, 1, 2]}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40202);
}
TEST_F(InvalidBucketSpec, BucketFailsWithNonArrayBoundaries) {
auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : 'test'}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40200);
spec = fromjson("{$bucket : {groupBy : '$x', boundaries : 1}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40200);
spec = fromjson("{$bucket : {groupBy : '$x', boundaries : {test : 'obj'}}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40200);
}
TEST_F(InvalidBucketSpec, BucketFailsWithNotEnoughBoundaries) {
auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : [0]}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40192);
spec = fromjson("{$bucket : {groupBy : '$x', boundaries : []}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40192);
}
TEST_F(InvalidBucketSpec, BucketFailsWithNonConstantValueBoundaries) {
const auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : ['$x', '$y', '$z']}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40191);
}
TEST_F(InvalidBucketSpec, BucketFailsWithMixedTypesBoundaries) {
const auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : [0, 'test']}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40193);
}
TEST_F(InvalidBucketSpec, BucketFailsWithNonUniqueBoundaries) {
auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : [1, 1, 2, 3]}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40194);
spec = fromjson("{$bucket : {groupBy : '$x', boundaries : ['a', 'b', 'b', 'c']}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40194);
}
TEST_F(InvalidBucketSpec, BucketFailsWithNonSortedBoundaries) {
const auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : [4, 5, 3, 6]}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40194);
}
TEST_F(InvalidBucketSpec, BucketFailsWithNonConstantExpressionDefault) {
const auto spec =
fromjson("{$bucket : {groupBy : '$x', boundaries : [0, 1, 2], default : '$x'}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40195);
}
TEST_F(InvalidBucketSpec, BucketFailsWhenDefaultIsInBoundariesRange) {
auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : [1, 2, 4], default : 3}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40199);
spec = fromjson("{$bucket : {groupBy : '$x', boundaries : [1, 2, 4], default : 1}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40199);
}
TEST_F(InvalidBucketSpec, GroupFailsForBucketWithInvalidOutputField) {
auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : [1, 2, 3], output : 'test'}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40196);
spec = fromjson(
"{$bucket : {groupBy : '$x', boundaries : [1, 2, 3], output : {number : 'test'}}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40234);
spec = fromjson(
"{$bucket : {groupBy : '$x', boundaries : [1, 2, 3], output : {'test.test' : {$sum : "
"1}}}}");
ASSERT_THROWS_CODE(createBucket(spec), AssertionException, 40235);
}
TEST_F(InvalidBucketSpec, SwitchFailsForBucketWhenNoDefaultSpecified) {
const auto spec = fromjson("{$bucket : {groupBy : '$x', boundaries : [1, 2, 3]}}");
list<intrusive_ptr<DocumentSource>> bucketStages = createBucket(spec);
ASSERT_EQUALS(bucketStages.size(), 2UL);
auto* groupStage = dynamic_cast<DocumentSourceGroup*>(bucketStages.front().get());
ASSERT(groupStage);
const auto* sortStage = dynamic_cast<DocumentSourceSort*>(bucketStages.back().get());
ASSERT(sortStage);
auto doc = Document{{"x", 4}};
auto source = DocumentSourceMock::createForTest(doc);
groupStage->setSource(source.get());
ASSERT_THROWS_CODE(groupStage->getNext(), AssertionException, 40066);
}
} // namespace
} // namespace mongo
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