75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2018 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* 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 LIBTEXTCLASSIFIER_UTILS_TESTING_TEST_DATA_GENERATOR_H_
|
||
|
|
#define LIBTEXTCLASSIFIER_UTILS_TESTING_TEST_DATA_GENERATOR_H_
|
||
|
|
|
||
|
|
#include <algorithm>
|
||
|
|
#include <iostream>
|
||
|
|
#include <limits>
|
||
|
|
#include <random>
|
||
|
|
#include <string>
|
||
|
|
#include <type_traits>
|
||
|
|
|
||
|
|
#include "utils/strings/stringpiece.h"
|
||
|
|
|
||
|
|
// Generates test data randomly.
|
||
|
|
class TestDataGenerator {
|
||
|
|
public:
|
||
|
|
explicit TestDataGenerator() : random_engine_(0) {}
|
||
|
|
|
||
|
|
template <typename T,
|
||
|
|
typename std::enable_if_t<std::is_integral<T>::value>* = nullptr>
|
||
|
|
T generate() {
|
||
|
|
typedef typename std::conditional<sizeof(T) >= sizeof(int16_t), T,
|
||
|
|
std::int16_t>::type rand_type;
|
||
|
|
std::uniform_int_distribution<rand_type> dist(
|
||
|
|
std::numeric_limits<T>::min(), std::numeric_limits<T>::max());
|
||
|
|
return static_cast<T>(dist(random_engine_));
|
||
|
|
}
|
||
|
|
|
||
|
|
template <>
|
||
|
|
bool generate() {
|
||
|
|
std::bernoulli_distribution dist(0.5);
|
||
|
|
return dist(random_engine_);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <>
|
||
|
|
char generate() {
|
||
|
|
std::uniform_int_distribution<int> dist(0, 25);
|
||
|
|
return dist(random_engine_) + 'a';
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename T, typename std::enable_if_t<
|
||
|
|
std::is_floating_point<T>::value>* = nullptr>
|
||
|
|
T generate() {
|
||
|
|
std::uniform_real_distribution<T> dist;
|
||
|
|
return dist(random_engine_);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename T, typename std::enable_if_t<
|
||
|
|
std::is_same<std::string, T>::value>* = nullptr>
|
||
|
|
T generate() {
|
||
|
|
std::uniform_int_distribution<> dist(1, 10);
|
||
|
|
return std::string(dist(random_engine_), '*');
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
std::default_random_engine random_engine_;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // LIBTEXTCLASSIFIER_UTILS_TESTING_TEST_DATA_GENERATOR_H_
|