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- /* test_generator.ipp
- *
- * Copyright Steven Watanabe 2011
- * 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)
- *
- * $Id$
- *
- */
- #include "concepts.hpp"
- #include <boost/random/seed_seq.hpp>
- #define BOOST_TEST_MAIN
- #include <boost/test/unit_test.hpp>
- using boost::random::test::RandomNumberEngine;
- BOOST_CONCEPT_ASSERT((RandomNumberEngine< BOOST_RANDOM_URNG >));
- typedef BOOST_RANDOM_URNG::result_type result_type;
- typedef boost::random::detail::seed_type<result_type>::type seed_type;
- #ifdef BOOST_MSVC
- #pragma warning(push)
- #pragma warning(disable:4244)
- #endif
- #ifndef BOOST_RANDOM_DISCARD_COUNT1
- #define BOOST_RANDOM_DISCARD_COUNT1 9307
- #endif
- template<class Converted, class URNG, class T>
- void test_seed_conversion(URNG & urng, const T & t)
- {
- Converted c = static_cast<Converted>(t);
- if(static_cast<T>(c) == t) {
- URNG urng2(c);
- std::ostringstream msg;
- msg << "Testing seed: type " << typeid(Converted).name() << ", value " << c;
- BOOST_CHECK_MESSAGE(urng == urng2, msg.str());
- urng2.seed(c);
- BOOST_CHECK_MESSAGE(urng == urng2, msg.str());
- }
- }
- #ifdef BOOST_MSVC
- #pragma warning(pop)
- #endif
- void test_seed(seed_type value)
- {
- BOOST_RANDOM_URNG urng(value);
- // integral types
- test_seed_conversion<char>(urng, value);
- test_seed_conversion<signed char>(urng, value);
- test_seed_conversion<unsigned char>(urng, value);
- test_seed_conversion<short>(urng, value);
- test_seed_conversion<unsigned short>(urng, value);
- test_seed_conversion<int>(urng, value);
- test_seed_conversion<unsigned int>(urng, value);
- test_seed_conversion<long>(urng, value);
- test_seed_conversion<unsigned long>(urng, value);
- #if !defined(BOOST_NO_INT64_T)
- test_seed_conversion<boost::int64_t>(urng, value);
- test_seed_conversion<boost::uint64_t>(urng, value);
- #endif
- // floating point types
- test_seed_conversion<float>(urng, value);
- test_seed_conversion<double>(urng, value);
- test_seed_conversion<long double>(urng, value);
- }
- BOOST_AUTO_TEST_CASE(test_default_seed)
- {
- BOOST_RANDOM_URNG urng;
- BOOST_RANDOM_URNG urng2;
- urng2();
- BOOST_CHECK_NE(urng, urng2);
- urng2.seed();
- BOOST_CHECK_EQUAL(urng, urng2);
- }
- BOOST_AUTO_TEST_CASE(test_arithmetic_seed)
- {
- test_seed(static_cast<seed_type>(0));
- test_seed(static_cast<seed_type>(127));
- test_seed(static_cast<seed_type>(539157235));
- test_seed(static_cast<seed_type>(~0u));
- }
-
- BOOST_AUTO_TEST_CASE(test_iterator_seed)
- {
- const std::vector<int> v((std::max)(std::size_t(9999u), sizeof(BOOST_RANDOM_URNG) / 4), 0x41);
- std::vector<int>::const_iterator it = v.begin();
- std::vector<int>::const_iterator it_end = v.end();
- BOOST_RANDOM_URNG urng(it, it_end);
- BOOST_CHECK(it != v.begin());
- std::iterator_traits<std::vector<int>::const_iterator>::difference_type n_words = (it - v.begin());
- BOOST_CHECK_GT(n_words, 0);
- BOOST_CHECK_EQUAL(n_words, BOOST_RANDOM_SEED_WORDS);
- it = v.begin();
- BOOST_RANDOM_URNG urng2;
- urng2.seed(it, it_end);
- std::iterator_traits<std::vector<int>::const_iterator>::difference_type n_words2 = (it - v.begin());
- BOOST_CHECK_EQUAL(n_words, n_words2);
- BOOST_CHECK_EQUAL(urng, urng2);
- it = v.end();
- BOOST_CHECK_THROW(BOOST_RANDOM_URNG(it, it_end), std::invalid_argument);
- BOOST_CHECK_THROW(urng.seed(it, it_end), std::invalid_argument);
- if(n_words > 1) {
- it = v.end();
- --it;
- BOOST_CHECK_THROW(BOOST_RANDOM_URNG(it, it_end), std::invalid_argument);
- it = v.end();
- --it;
- BOOST_CHECK_THROW(urng.seed(it, it_end), std::invalid_argument);
- }
- }
- BOOST_AUTO_TEST_CASE(test_seed_seq_seed)
- {
- boost::random::seed_seq q;
- BOOST_RANDOM_URNG urng(q);
- BOOST_RANDOM_URNG urng2;
- BOOST_CHECK_NE(urng, urng2);
- urng2.seed(q);
- BOOST_CHECK_EQUAL(urng, urng2);
- }
- template<class CharT>
- void do_test_streaming(const BOOST_RANDOM_URNG& urng)
- {
- BOOST_RANDOM_URNG urng2;
- std::basic_ostringstream<CharT> output;
- output << urng;
- BOOST_CHECK_NE(urng, urng2);
- // restore old state
- std::basic_istringstream<CharT> input(output.str());
- input >> urng2;
- BOOST_CHECK_EQUAL(urng, urng2);
- }
- BOOST_AUTO_TEST_CASE(test_streaming)
- {
- BOOST_RANDOM_URNG urng;
- urng.discard(9307);
- do_test_streaming<char>(urng);
- #if !defined(BOOST_NO_STD_WSTREAMBUF) && !defined(BOOST_NO_STD_WSTRING)
- do_test_streaming<wchar_t>(urng);
- #endif
- }
- BOOST_AUTO_TEST_CASE(test_discard)
- {
- BOOST_RANDOM_URNG urng;
- BOOST_RANDOM_URNG urng2;
- BOOST_CHECK_EQUAL(urng, urng2);
- for(int i = 0; i < BOOST_RANDOM_DISCARD_COUNT1; ++i)
- urng();
- BOOST_CHECK_NE(urng, urng2);
- urng2.discard(BOOST_RANDOM_DISCARD_COUNT1);
- BOOST_CHECK_EQUAL(urng, urng2);
- }
- #ifdef BOOST_RANDOM_DISCARD_COUNT2
- BOOST_AUTO_TEST_CASE(test_discard2)
- {
- BOOST_RANDOM_URNG urng;
- BOOST_RANDOM_URNG urng2;
- BOOST_CHECK_EQUAL(urng, urng2);
- for(int i = 0; i < BOOST_RANDOM_DISCARD_COUNT2; ++i)
- urng();
- BOOST_CHECK_NE(urng, urng2);
- urng2.discard(BOOST_RANDOM_DISCARD_COUNT2);
- BOOST_CHECK_EQUAL(urng, urng2);
- }
- #endif
- #ifdef BOOST_RANDOM_DISCARD_MAX
- BOOST_AUTO_TEST_CASE(test_discard_max)
- {
- boost::uintmax_t val = (std::numeric_limits<boost::uintmax_t>::max)();
- boost::uintmax_t half = val / 2;
- BOOST_RANDOM_URNG urng;
- BOOST_RANDOM_URNG urng2;
- urng.discard(half);
- urng.discard(half);
- urng.discard(val - 2*half);
- urng2.discard(val);
- BOOST_CHECK_EQUAL(urng, urng2);
- }
- #endif
- BOOST_AUTO_TEST_CASE(test_copy)
- {
- BOOST_RANDOM_URNG urng;
- urng.discard(9307);
- {
- BOOST_RANDOM_URNG urng2 = urng;
- BOOST_CHECK_EQUAL(urng, urng2);
- }
- {
- BOOST_RANDOM_URNG urng2(urng);
- BOOST_CHECK_EQUAL(urng, urng2);
- }
- {
- BOOST_RANDOM_URNG urng2;
- urng2 = urng;
- BOOST_CHECK_EQUAL(urng, urng2);
- }
- }
- BOOST_AUTO_TEST_CASE(test_min_max)
- {
- BOOST_RANDOM_URNG urng;
- for(int i = 0; i < 10000; ++i) {
- result_type value = urng();
- BOOST_CHECK_GE(value, (BOOST_RANDOM_URNG::min)());
- BOOST_CHECK_LE(value, (BOOST_RANDOM_URNG::max)());
- }
- }
- BOOST_AUTO_TEST_CASE(test_comparison)
- {
- BOOST_RANDOM_URNG urng;
- BOOST_RANDOM_URNG urng2;
- BOOST_CHECK(urng == urng2);
- BOOST_CHECK(!(urng != urng2));
- urng();
- BOOST_CHECK(urng != urng2);
- BOOST_CHECK(!(urng == urng2));
- }
- BOOST_AUTO_TEST_CASE(validate)
- {
- BOOST_RANDOM_URNG urng;
- for(int i = 0; i < 9999; ++i) {
- urng();
- }
- BOOST_CHECK_EQUAL(urng(), BOOST_RANDOM_VALIDATION_VALUE);
- }
- BOOST_AUTO_TEST_CASE(validate_seed_seq)
- {
- boost::random::seed_seq seed;
- BOOST_RANDOM_URNG urng(seed);
- for(int i = 0; i < 9999; ++i) {
- urng();
- }
- BOOST_CHECK_EQUAL(urng(), BOOST_RANDOM_SEED_SEQ_VALIDATION_VALUE);
- }
- BOOST_AUTO_TEST_CASE(validate_iter)
- {
- const std::vector<int> v((std::max)(std::size_t(9999u), sizeof(BOOST_RANDOM_URNG) / 4), 0x41);
- std::vector<int>::const_iterator it = v.begin();
- std::vector<int>::const_iterator it_end = v.end();
- BOOST_RANDOM_URNG urng(it, it_end);
- for(int i = 0; i < 9999; ++i) {
- urng();
- }
- BOOST_CHECK_EQUAL(urng(), BOOST_RANDOM_ITERATOR_VALIDATION_VALUE);
- }
- BOOST_AUTO_TEST_CASE(test_generate)
- {
- BOOST_RANDOM_URNG urng;
- boost::uint32_t expected[] = BOOST_RANDOM_GENERATE_VALUES;
- static const std::size_t N = sizeof(expected)/sizeof(expected[0]);
- boost::uint32_t actual[N];
- urng.generate(&actual[0], &actual[0] + N);
- BOOST_CHECK_EQUAL_COLLECTIONS(actual, actual + N, expected, expected + N);
- }
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