forked from boostorg/unordered
9d7411840e
Make simple_test test a little more. Use doubles for calculating max load factor. Some workarounds, mostly for Borland and running the tests. [SVN r42666]
95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
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// Copyright 2005-2007 Daniel James.
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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// This uses std::rand to generate random values for tests.
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// Which is not good as different platforms will be running different tests.
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// It would be much better to use Boost.Random, but it doesn't
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// support all the compilers that I want to test on.
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#if !defined(BOOST_UNORDERED_TEST_HELPERS_GENERATORS_HEADER)
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#define BOOST_UNORDERED_TEST_HELPERS_GENERATORS_HEADER
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#include <string>
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#include <utility>
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#include <stdexcept>
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#include <cstdlib>
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#include <boost/type_traits/add_const.hpp>
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#include "./fwd.hpp"
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namespace test
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{
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struct seed_t {
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seed_t(unsigned int x) {
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using namespace std;
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srand(x);
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}
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};
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template <class T>
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struct generator;
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template <class T1, class T2> std::pair<T1, T2> generate(
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std::pair<T1, T2> const*)
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{
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static generator<T1> g1;
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static generator<T2> g2;
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return std::pair<T1, T2>(g1(), g2());
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}
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template <class T>
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struct generator
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{
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typedef T value_type;
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typedef BOOST_DEDUCED_TYPENAME boost::add_const<T>::type const_value_type;
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value_type operator()() const
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{
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return generate((const_value_type*) 0);
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}
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};
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inline int generate(int const*)
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{
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using namespace std;
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return rand();
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}
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inline char generate(char const*)
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{
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using namespace std;
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return static_cast<char>((rand() >> 1) % (128-32) + 32);
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}
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inline signed char generate(signed char const*)
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{
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using namespace std;
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return static_cast<signed char>(rand());
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}
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inline std::string generate(std::string const*)
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{
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using namespace std;
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static test::generator<char> char_gen;
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std::string result;
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int length = rand() % 10;
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for(int i = 0; i < length; ++i)
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result += char_gen();
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return result;
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}
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float generate(float const*)
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{
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using namespace std;
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return (float) rand() / (float) RAND_MAX;
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}
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}
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#endif
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