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/**
* Copyright (C) 2018 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.
*/
#pragma once
#include "mongo/db/pipeline/document_source.h"
#include "mongo/db/pipeline/expression_context_for_test.h"
namespace mongo {
/**
* A dummy class for other tests to inherit from to customize the behavior of any of the virtual
* methods from DocumentSource without having to implement all of them.
*/
class DocumentSourceTestOptimizations : public DocumentSource {
public:
DocumentSourceTestOptimizations() : DocumentSource(new ExpressionContextForTest()) {}
virtual ~DocumentSourceTestOptimizations() = default;
virtual GetNextResult getNext() override {
MONGO_UNREACHABLE;
}
virtual StageConstraints constraints(Pipeline::SplitState) const override {
// Return the default constraints so that this can be used in test pipelines. Constructing a
// pipeline needs to do some validation that depends on this.
return StageConstraints{StreamType::kStreaming,
PositionRequirement::kNone,
HostTypeRequirement::kNone,
DiskUseRequirement::kNoDiskUse,
FacetRequirement::kAllowed,
TransactionRequirement::kNotAllowed};
}
virtual GetModPathsReturn getModifiedPaths() const override {
MONGO_UNREACHABLE;
}
private:
virtual Value serialize(boost::optional<ExplainOptions::Verbosity>) const override {
MONGO_UNREACHABLE;
}
};
} // namespace mongo
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