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// (C) Copyright Daniel James 2005.
// Use, modification and distribution are subject to 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)
#include <boost/config.hpp>
#include <cstddef>
namespace test
{
struct custom
{
int value_;
std::size_t hash() const
{
return value_ * 10;
}
#if !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
friend std::size_t hash_value(custom const& x )
{
return x.hash();
}
#endif
custom(int x) : value_(x) {}
};
}
#if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
namespace boost
{
std::size_t hash_value(test::custom x)
{
return x.hash();
}
}
#endif
#include "./config.hpp"
#ifdef TEST_EXTENSIONS
# ifdef TEST_STD_INCLUDES
# include <functional>
# else
# include <boost/functional/hash/hash.hpp>
# endif
#endif
#define BOOST_AUTO_TEST_MAIN
#include <boost/test/auto_unit_test.hpp>
#ifdef TEST_EXTENSIONS
#include <vector>
#include <string>
#include <cctype>
BOOST_AUTO_UNIT_TEST(custom_tests)
{
HASH_NAMESPACE::hash<test::custom> custom_hasher;
BOOST_CHECK(custom_hasher(10) == 100u);
test::custom x(55);
BOOST_CHECK(custom_hasher(x) == 550u);
{
using namespace HASH_NAMESPACE;
BOOST_CHECK(custom_hasher(x) == hash_value(x));
}
std::vector<test::custom> custom_vector;
custom_vector.push_back(5);
custom_vector.push_back(25);
custom_vector.push_back(35);
std::size_t seed = 0;
HASH_NAMESPACE::hash_combine(seed, test::custom(5));
HASH_NAMESPACE::hash_combine(seed, test::custom(25));
HASH_NAMESPACE::hash_combine(seed, test::custom(35));
std::size_t seed2 = 0;
HASH_NAMESPACE::hash_combine(seed2, 50u);
HASH_NAMESPACE::hash_combine(seed2, 250u);
HASH_NAMESPACE::hash_combine(seed2, 350u);
BOOST_CHECK(seed ==
HASH_NAMESPACE::hash_range(custom_vector.begin(), custom_vector.end()));
BOOST_CHECK(seed == seed2);
}
#endif // TEST_EXTENSIONS
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