70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LIBTEXTCLASSIFIER_UTILS_TESTING_TEST_DATA_GENERATOR_H_
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#define LIBTEXTCLASSIFIER_UTILS_TESTING_TEST_DATA_GENERATOR_H_
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#include <algorithm>
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#include <iostream>
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#include <random>
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#include <string>
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#include "utils/strings/stringpiece.h"
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// Generates test data randomly.
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class TestDataGenerator {
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public:
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explicit TestDataGenerator() : random_engine_(0) {}
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template <typename T,
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typename std::enable_if_t<std::is_integral<T>::value>* = nullptr>
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T generate() {
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std::uniform_int_distribution<T> dist;
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return dist(random_engine_);
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}
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template <>
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bool generate() {
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std::bernoulli_distribution dist(0.5);
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return dist(random_engine_);
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}
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template <>
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char generate() {
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std::uniform_int_distribution<int> dist(0, 25);
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return dist(random_engine_) + 'a';
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}
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template <typename T, typename std::enable_if_t<
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std::is_floating_point<T>::value>* = nullptr>
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T generate() {
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std::uniform_real_distribution<T> dist;
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return dist(random_engine_);
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}
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template <typename T, typename std::enable_if_t<
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std::is_same<std::string, T>::value>* = nullptr>
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T generate() {
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std::uniform_int_distribution<> dist(1, 10);
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return std::string(dist(random_engine_), '*');
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}
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private:
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std::default_random_engine random_engine_;
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};
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#endif // LIBTEXTCLASSIFIER_UTILS_TESTING_TEST_DATA_GENERATOR_H_
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