/**
* Copyright (C) 2016 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 .
*
* 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/platform/basic.h"
#include
#include "mongo/bson/json.h"
#include "mongo/db/matcher/extensions_callback_disallow_extensions.h"
#include "mongo/db/pipeline/aggregation_request.h"
#include "mongo/db/query/parsed_distinct.h"
#include "mongo/db/query/query_test_service_context.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
namespace {
static const NamespaceString testns("testdb.testcoll");
static const bool isExplain = true;
TEST(ParsedDistinctTest, ConvertToAggregationNoQuery) {
QueryTestServiceContext serviceContext;
auto uniqueTxn = serviceContext.makeOperationContext();
OperationContext* opCtx = uniqueTxn.get();
auto pd = ParsedDistinct::parse(opCtx,
testns,
fromjson("{distinct: 'testcoll', key: 'x'}"),
ExtensionsCallbackDisallowExtensions(),
!isExplain);
ASSERT_OK(pd.getStatus());
auto agg = pd.getValue().asAggregationCommand();
ASSERT_OK(agg);
auto ar = AggregationRequest::parseFromBSON(testns, agg.getValue());
ASSERT_OK(ar.getStatus());
ASSERT(!ar.getValue().isExplain());
ASSERT_EQ(ar.getValue().getBatchSize(), AggregationRequest::kDefaultBatchSize);
ASSERT_EQ(ar.getValue().getNamespaceString(), testns);
ASSERT_BSONOBJ_EQ(ar.getValue().getCollation(), BSONObj());
std::vector expectedPipeline{
BSON("$unwind" << BSON("path"
<< "$x"
<< "preserveNullAndEmptyArrays"
<< true)),
BSON("$group" << BSON("_id" << BSONNULL << "distinct" << BSON("$addToSet"
<< "$x")))};
ASSERT(std::equal(expectedPipeline.begin(),
expectedPipeline.end(),
ar.getValue().getPipeline().begin(),
ar.getValue().getPipeline().end(),
SimpleBSONObjComparator::kInstance.makeEqualTo()));
}
TEST(ParsedDistinctTest, ConvertToAggregationWithQuery) {
QueryTestServiceContext serviceContext;
auto uniqueTxn = serviceContext.makeOperationContext();
OperationContext* opCtx = uniqueTxn.get();
auto pd = ParsedDistinct::parse(opCtx,
testns,
fromjson("{distinct: 'testcoll', key: 'y', query: {z: 7}}"),
ExtensionsCallbackDisallowExtensions(),
!isExplain);
ASSERT_OK(pd.getStatus());
auto agg = pd.getValue().asAggregationCommand();
ASSERT_OK(agg);
auto ar = AggregationRequest::parseFromBSON(testns, agg.getValue());
ASSERT_OK(ar.getStatus());
ASSERT(!ar.getValue().isExplain());
ASSERT_EQ(ar.getValue().getBatchSize(), AggregationRequest::kDefaultBatchSize);
ASSERT_EQ(ar.getValue().getNamespaceString(), testns);
ASSERT_BSONOBJ_EQ(ar.getValue().getCollation(), BSONObj());
std::vector expectedPipeline{
BSON("$match" << BSON("z" << 7)),
BSON("$unwind" << BSON("path"
<< "$y"
<< "preserveNullAndEmptyArrays"
<< true)),
BSON("$group" << BSON("_id" << BSONNULL << "distinct" << BSON("$addToSet"
<< "$y")))};
ASSERT(std::equal(expectedPipeline.begin(),
expectedPipeline.end(),
ar.getValue().getPipeline().begin(),
ar.getValue().getPipeline().end(),
SimpleBSONObjComparator::kInstance.makeEqualTo()));
}
TEST(ParsedDistinctTest, ConvertToAggregationWithExplain) {
QueryTestServiceContext serviceContext;
auto uniqueTxn = serviceContext.makeOperationContext();
OperationContext* opCtx = uniqueTxn.get();
auto pd = ParsedDistinct::parse(opCtx,
testns,
fromjson("{distinct: 'testcoll', key: 'x'}"),
ExtensionsCallbackDisallowExtensions(),
isExplain);
ASSERT_OK(pd.getStatus());
auto agg = pd.getValue().asAggregationCommand();
ASSERT_OK(agg);
auto ar = AggregationRequest::parseFromBSON(testns, agg.getValue());
ASSERT_OK(ar.getStatus());
ASSERT(ar.getValue().isExplain());
ASSERT_EQ(ar.getValue().getNamespaceString(), testns);
ASSERT_BSONOBJ_EQ(ar.getValue().getCollation(), BSONObj());
std::vector expectedPipeline{
BSON("$unwind" << BSON("path"
<< "$x"
<< "preserveNullAndEmptyArrays"
<< true)),
BSON("$group" << BSON("_id" << BSONNULL << "distinct" << BSON("$addToSet"
<< "$x")))};
ASSERT(std::equal(expectedPipeline.begin(),
expectedPipeline.end(),
ar.getValue().getPipeline().begin(),
ar.getValue().getPipeline().end(),
SimpleBSONObjComparator::kInstance.makeEqualTo()));
}
} // namespace
} // namespace mongo