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/**
* 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 <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/platform/basic.h"
#include <boost/intrusive_ptr.hpp>
#include <vector>
#include "mongo/bson/bsonmisc.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/db/pipeline/aggregation_context_fixture.h"
#include "mongo/db/pipeline/document.h"
#include "mongo/db/pipeline/document_source.h"
#include "mongo/db/pipeline/field_path.h"
#include "mongo/db/pipeline/value.h"
namespace mongo {
namespace {
using boost::intrusive_ptr;
using std::vector;
// This provides access to getExpCtx(), but we'll use a different name for this test suite.
using DocumentSourceLookUpTest = AggregationContextFixture;
TEST_F(DocumentSourceLookUpTest, ShouldTruncateOutputSortOnAsField) {
intrusive_ptr<DocumentSourceMock> source = DocumentSourceMock::create();
source->sorts = {BSON("a" << 1 << "d.e" << 1 << "c" << 1)};
auto lookup = DocumentSourceLookUp::createFromBson(
Document{
{"$lookup",
Document{{"from", "a"}, {"localField", "b"}, {"foreignField", "c"}, {"as", "d.e"}}}}
.toBson()
.firstElement(),
getExpCtx());
lookup->setSource(source.get());
BSONObjSet outputSort = lookup->getOutputSorts();
ASSERT_EQUALS(outputSort.count(BSON("a" << 1)), 1U);
ASSERT_EQUALS(outputSort.size(), 1U);
}
TEST_F(DocumentSourceLookUpTest, ShouldTruncateOutputSortOnSuffixOfAsField) {
intrusive_ptr<DocumentSourceMock> source = DocumentSourceMock::create();
source->sorts = {BSON("a" << 1 << "d.e" << 1 << "c" << 1)};
auto lookup = DocumentSourceLookUp::createFromBson(
Document{{"$lookup",
Document{{"from", "a"}, {"localField", "b"}, {"foreignField", "c"}, {"as", "d"}}}}
.toBson()
.firstElement(),
getExpCtx());
lookup->setSource(source.get());
BSONObjSet outputSort = lookup->getOutputSorts();
ASSERT_EQUALS(outputSort.count(BSON("a" << 1)), 1U);
ASSERT_EQUALS(outputSort.size(), 1U);
}
TEST(MakeMatchStageFromInput, NonArrayValueUsesEqQuery) {
auto input = Document{{"local", 1}};
BSONObj matchStage = DocumentSourceLookUp::makeMatchStageFromInput(
input, FieldPath("local"), "foreign", BSONObj());
ASSERT_BSONOBJ_EQ(matchStage, fromjson("{$match: {$and: [{foreign: {$eq: 1}}, {}]}}"));
}
TEST(MakeMatchStageFromInput, RegexValueUsesEqQuery) {
BSONRegEx regex("^a");
Document input = DOC("local" << Value(regex));
BSONObj matchStage = DocumentSourceLookUp::makeMatchStageFromInput(
input, FieldPath("local"), "foreign", BSONObj());
ASSERT_BSONOBJ_EQ(
matchStage,
BSON("$match" << BSON(
"$and" << BSON_ARRAY(BSON("foreign" << BSON("$eq" << regex)) << BSONObj()))));
}
TEST(MakeMatchStageFromInput, ArrayValueUsesInQuery) {
vector<Value> inputArray = {Value(1), Value(2)};
Document input = DOC("local" << Value(inputArray));
BSONObj matchStage = DocumentSourceLookUp::makeMatchStageFromInput(
input, FieldPath("local"), "foreign", BSONObj());
ASSERT_BSONOBJ_EQ(matchStage, fromjson("{$match: {$and: [{foreign: {$in: [1, 2]}}, {}]}}"));
}
TEST(MakeMatchStageFromInput, ArrayValueWithRegexUsesOrQuery) {
BSONRegEx regex("^a");
vector<Value> inputArray = {Value(1), Value(regex), Value(2)};
Document input = DOC("local" << Value(inputArray));
BSONObj matchStage = DocumentSourceLookUp::makeMatchStageFromInput(
input, FieldPath("local"), "foreign", BSONObj());
ASSERT_BSONOBJ_EQ(
matchStage,
BSON("$match" << BSON(
"$and" << BSON_ARRAY(
BSON("$or" << BSON_ARRAY(BSON("foreign" << BSON("$eq" << Value(1)))
<< BSON("foreign" << BSON("$eq" << regex))
<< BSON("foreign" << BSON("$eq" << Value(2)))))
<< BSONObj()))));
}
} // namespace
} // namespace mongo
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