| /* |
| * 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 <random> |
| #include <string> |
| |
| #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() { |
| std::uniform_int_distribution<T> dist; |
| return 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_ |