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// Copyright (C) 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef ICING_MONKEY_TEST_MONKEY_TEST_GENERATORS_H_
#define ICING_MONKEY_TEST_MONKEY_TEST_GENERATORS_H_
#include <cstdint>
#include <random>
#include <string>
#include <string_view>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include "icing/monkey_test/monkey-test-common-words.h"
#include "icing/monkey_test/monkey-test-util.h"
#include "icing/monkey_test/monkey-tokenized-document.h"
#include "icing/proto/schema.pb.h"
#include "icing/proto/term.pb.h"
#include "icing/util/clock.h"
namespace icing {
namespace lib {
// A random schema generator used for monkey testing.
class MonkeySchemaGenerator {
public:
struct UpdateSchemaResult {
SchemaProto schema;
bool is_invalid_schema;
std::unordered_set<std::string> schema_types_deleted;
std::unordered_set<std::string> schema_types_incompatible;
std::unordered_set<std::string> schema_types_index_incompatible;
};
explicit MonkeySchemaGenerator(
MonkeyTestRandomEngine* random,
const IcingMonkeyTestRunnerConfiguration* config)
: random_(random), config_(config) {}
SchemaProto GenerateSchema();
UpdateSchemaResult UpdateSchema(const SchemaProto& schema);
private:
PropertyConfigProto GenerateProperty(
const SchemaTypeConfigProto& type_config,
PropertyConfigProto::Cardinality::Code cardinality,
TermMatchType::Code term_match_type);
void UpdateProperty(const SchemaTypeConfigProto& type_config,
PropertyConfigProto& property,
UpdateSchemaResult& result);
SchemaTypeConfigProto GenerateType();
void UpdateType(SchemaTypeConfigProto& type_config,
UpdateSchemaResult& result);
int num_types_generated_ = 0;
// A map from type name to the number of properties generated in the
// corresponding types.
std::unordered_map<std::string, int> num_properties_generated_;
MonkeyTestRandomEngine* random_; // Does not own.
const IcingMonkeyTestRunnerConfiguration* config_; // Does not own.
};
// A random document generator used for monkey testing.
// When num_uris is 0, all documents generated get different URIs. Otherwise,
// URIs will be randomly picked from a set with num_uris elements.
// Same for num_namespaces.
class MonkeyDocumentGenerator {
public:
explicit MonkeyDocumentGenerator(
MonkeyTestRandomEngine* random, const SchemaProto* schema,
const IcingMonkeyTestRunnerConfiguration* config)
: random_(random), schema_(schema), config_(config) {}
const SchemaTypeConfigProto& GetType() const {
std::uniform_int_distribution<> dist(0, schema_->types_size() - 1);
return schema_->types(dist(*random_));
}
std::string_view GetToken() const {
// TODO: Instead of randomly picking tokens from the language set
// kCommonWords, we can make some words more common than others to simulate
// term frequencies in the real world. This can help us get extremely large
// posting lists.
std::uniform_int_distribution<> dist(0, kCommonWords.size() - 1);
return kCommonWords[dist(*random_)];
}
std::string GetNamespace() const;
std::string GetUri() const;
int GetNumTokens() const;
std::vector<std::string> GetPropertyContent() const;
MonkeyTokenizedDocument GenerateDocument();
private:
MonkeyTestRandomEngine* random_; // Does not own.
const SchemaProto* schema_; // Does not own.
const IcingMonkeyTestRunnerConfiguration* config_; // Does not own.
uint32_t num_docs_generated_ = 0;
Clock clock_;
};
} // namespace lib
} // namespace icing
#endif // ICING_MONKEY_TEST_MONKEY_TEST_GENERATORS_H_
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