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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 "mongo/db/exec/document_value/document.h"
#include "mongo/db/exec/document_value/document_value_test_util.h"
#include "mongo/db/pipeline/aggregation_context_fixture.h"
#include "mongo/db/pipeline/document_source_out.h"
namespace mongo {
namespace {
using boost::intrusive_ptr;
/**
* For the purpsoses of this test, assume every collection is unsharded. Stages may ask this during
* setup. For example, to compute its constraints, the $out stage needs to know if the output
* collection is sharded.
*/
class MongoProcessInterfaceForTest : public StubMongoProcessInterface {
public:
bool isSharded(OperationContext* opCtx, const NamespaceString& ns) override {
return false;
}
/**
* For the purposes of these tests, pretend each collection is unsharded and has a document key
* of just "_id".
*/
std::vector<FieldPath> collectDocumentKeyFieldsActingAsRouter(
OperationContext* opCtx, const NamespaceString& nss) const override {
return {"_id"};
}
void checkRoutingInfoEpochOrThrow(const boost::intrusive_ptr<ExpressionContext>& expCtx,
const NamespaceString&,
ChunkVersion) const override {
return; // Pretend it always matches for our tests here.
}
};
class DocumentSourceOutTest : public AggregationContextFixture {
public:
DocumentSourceOutTest() : AggregationContextFixture() {
getExpCtx()->mongoProcessInterface = std::make_shared<MongoProcessInterfaceForTest>();
}
intrusive_ptr<DocumentSourceOut> createOutStage(BSONObj spec) {
auto specElem = spec.firstElement();
intrusive_ptr<DocumentSourceOut> outStage = dynamic_cast<DocumentSourceOut*>(
DocumentSourceOut::createFromBson(specElem, getExpCtx()).get());
ASSERT_TRUE(outStage);
return outStage;
}
};
TEST_F(DocumentSourceOutTest, FailsToParseIncorrectType) {
BSONObj spec = BSON("$out" << 1);
ASSERT_THROWS_CODE(createOutStage(spec), AssertionException, 16990);
spec = BSON("$out" << BSONArray());
ASSERT_THROWS_CODE(createOutStage(spec), AssertionException, 16990);
spec = BSON("$out" << BSONObj());
ASSERT_THROWS_CODE(createOutStage(spec), AssertionException, 16994);
}
TEST_F(DocumentSourceOutTest, AcceptsStringArgument) {
BSONObj spec = BSON("$out"
<< "some_collection");
auto outStage = createOutStage(spec);
ASSERT_EQ(outStage->getOutputNs().coll(), "some_collection");
}
TEST_F(DocumentSourceOutTest, SerializeToString) {
BSONObj spec = BSON("$out"
<< "some_collection");
auto outStage = createOutStage(spec);
auto serialized = outStage->serialize().getDocument();
ASSERT_EQ(serialized["$out"]["coll"].getStringData(), "some_collection");
// Make sure we can reparse the serialized BSON.
auto reparsedOutStage = createOutStage(serialized.toBson());
auto reSerialized = reparsedOutStage->serialize().getDocument();
ASSERT_EQ(reSerialized["$out"]["coll"].getStringData(), "some_collection");
}
} // namespace
} // namespace mongo
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