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- // Copyright 2005-2009 Daniel James.
- // Distributed under the Boost Software License, Version 1.0. (See accompanying
- // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- // This uses std::rand to generate random values for tests.
- // Which is not good as different platforms will be running different tests.
- // It would be much better to use Boost.Random, but it doesn't
- // support all the compilers that I want to test on.
- #if !defined(BOOST_UNORDERED_TEST_HELPERS_GENERATORS_HEADER)
- #define BOOST_UNORDERED_TEST_HELPERS_GENERATORS_HEADER
- #include "./fwd.hpp"
- #include <boost/type_traits/add_const.hpp>
- #include <cstdlib>
- #include <stdexcept>
- #include <string>
- #include <utility>
- namespace test {
- struct seed_t
- {
- seed_t(unsigned int x)
- {
- using namespace std;
- srand(x);
- }
- };
- std::size_t random_value(std::size_t max)
- {
- using namespace std;
- return static_cast<std::size_t>(rand()) % max;
- }
- inline int generate(int const*, random_generator g)
- {
- using namespace std;
- int value = rand();
- if (g == limited_range) {
- value = value % 100;
- }
- return value;
- }
- inline char generate(char const*, random_generator)
- {
- using namespace std;
- return static_cast<char>((rand() >> 1) % (128 - 32) + 32);
- }
- inline signed char generate(signed char const*, random_generator)
- {
- using namespace std;
- return static_cast<signed char>(rand());
- }
- inline std::string generate(std::string const*, random_generator g)
- {
- using namespace std;
- char* char_ptr = 0;
- std::string result;
- if (g == limited_range) {
- std::size_t length = test::random_value(2) + 2;
- char const* strings[] = {"'vZh(3~ms", "%m", "_Y%U", "N'Y", "4,J_J"};
- for (std::size_t i = 0; i < length; ++i) {
- result += strings[random_value(sizeof(strings) / sizeof(strings[0]))];
- }
- } else {
- std::size_t length = test::random_value(10) + 1;
- for (std::size_t i = 0; i < length; ++i) {
- result += generate(char_ptr, g);
- }
- }
- return result;
- }
- float generate(float const*, random_generator g)
- {
- using namespace std;
- int x = 0;
- int value = generate(&x, g);
- return (float)value / (float)RAND_MAX;
- }
- }
- #endif
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