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// Copyright 2021 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#if defined(__GNUC__) && __GNUC__ == 8
# pragma GCC diagnostic ignored "-Wsign-conversion"
#endif
#include <boost/container_hash/hash.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/config.hpp>
#include <boost/config/pragma_message.hpp>
#if defined(BOOST_NO_CXX11_HDR_FORWARD_LIST)
BOOST_PRAGMA_MESSAGE( "Test skipped, BOOST_NO_CXX11_HDR_FORWARD_LIST is defined" )
int main() {}
#else
#include <forward_list>
template<class T> void test()
{
typedef std::forward_list<T> list;
typedef boost::hash<list> hash;
int const N = 32;
std::size_t h[ N ];
list v;
for( int i = 0; i < N; ++i )
{
h[ i ] = hash()( v );
BOOST_TEST_EQ( h[ i ], hash()( v ) );
for( int j = 0; j < i; ++j )
{
BOOST_TEST_NE( h[ j ], h[ i ] );
}
v.push_front( T() );
}
}
int main()
{
test<int>();
test<float>();
test<double>();
test< std::forward_list<int> >();
return boost::report_errors();
}
#endif
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