container_hash/test/hash_global_namespace_test.cpp
2017-12-29 13:58:48 +00:00

104 lines
2.3 KiB
C++

// Copyright 2006-2009 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 test demonstrates an ADL bug in Borland 5.5 where ADL isn't performed
// in the global namespace.
#include "./config.hpp"
#include <boost/config.hpp>
#include <cstddef>
struct custom
{
int value_;
std::size_t hash() const
{
return static_cast<std::size_t>(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(custom x)
{
return x.hash();
}
}
#endif
#include "./config.hpp"
#ifdef BOOST_HASH_TEST_EXTENSIONS
# ifdef BOOST_HASH_TEST_STD_INCLUDES
# include <functional>
# else
# include <boost/container_hash/hash.hpp>
# endif
#endif
#include <boost/core/lightweight_test.hpp>
#ifdef BOOST_HASH_TEST_EXTENSIONS
#include <vector>
#include <string>
#include <cctype>
void custom_tests()
{
BOOST_HASH_TEST_NAMESPACE::hash<custom> custom_hasher;
BOOST_TEST(custom_hasher(10) == 100u);
custom x(55);
BOOST_TEST(custom_hasher(x) == 550u);
{
using namespace BOOST_HASH_TEST_NAMESPACE;
BOOST_TEST(custom_hasher(x) == hash_value(x));
}
std::vector<custom> custom_vector;
custom_vector.push_back(5);
custom_vector.push_back(25);
custom_vector.push_back(35);
std::size_t seed = 0;
BOOST_HASH_TEST_NAMESPACE::hash_combine(seed, custom(5));
BOOST_HASH_TEST_NAMESPACE::hash_combine(seed, custom(25));
BOOST_HASH_TEST_NAMESPACE::hash_combine(seed, custom(35));
std::size_t seed2 = 0;
BOOST_HASH_TEST_NAMESPACE::hash_combine(seed2, 50u);
BOOST_HASH_TEST_NAMESPACE::hash_combine(seed2, 250u);
BOOST_HASH_TEST_NAMESPACE::hash_combine(seed2, 350u);
BOOST_TEST(seed == BOOST_HASH_TEST_NAMESPACE::hash_range(
custom_vector.begin(), custom_vector.end()));
BOOST_TEST(seed == seed2);
}
#endif // BOOST_HASH_TEST_EXTENSIONS
int main()
{
#ifdef BOOST_HASH_TEST_EXTENSIONS
custom_tests();
#endif
return boost::report_errors();
}