mirror of
https://github.com/boostorg/container_hash.git
synced 2026-01-19 16:12:17 +00:00
52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
// Copyright 2022 Peter Dimov.
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// https://www.boost.org/LICENSE_1_0.txt
|
|
|
|
#include <boost/utility/string_view.hpp>
|
|
#include <boost/core/detail/string_view.hpp>
|
|
#include <boost/container_hash/hash.hpp>
|
|
#include <boost/core/lightweight_test.hpp>
|
|
#include <boost/config.hpp>
|
|
#include <string>
|
|
#if !defined(BOOST_NO_CXX17_HDR_STRING_VIEW)
|
|
#include <string_view>
|
|
#endif
|
|
#include <vector>
|
|
#include <deque>
|
|
#include <list>
|
|
#if !defined(BOOST_NO_CXX11_HDR_FORWARD_LIST)
|
|
# include <forward_list>
|
|
#endif
|
|
|
|
// Test whether the hash values of a string and a
|
|
// string_view that refers to it match. This is
|
|
// important for unordered heterogeneous lookups.
|
|
|
|
template<class T> std::size_t hv( T const& t )
|
|
{
|
|
return boost::hash<T>()( t );
|
|
}
|
|
|
|
int main()
|
|
{
|
|
std::string s( "Test." );
|
|
std::size_t h0 = hv( s );
|
|
|
|
BOOST_TEST_EQ( h0, hv( boost::string_view( s ) ) );
|
|
BOOST_TEST_EQ( h0, hv( boost::core::string_view( s ) ) );
|
|
|
|
#if !defined(BOOST_NO_CXX17_HDR_STRING_VIEW)
|
|
BOOST_TEST_EQ( h0, hv( std::string_view( s ) ) );
|
|
#endif
|
|
|
|
BOOST_TEST_EQ( h0, hv( std::vector<char>( s.begin(), s.end() ) ) );
|
|
BOOST_TEST_EQ( h0, hv( std::deque<char>( s.begin(), s.end() ) ) );
|
|
BOOST_TEST_EQ( h0, hv( std::list<char>( s.begin(), s.end() ) ) );
|
|
|
|
#if !defined(BOOST_NO_CXX11_HDR_FORWARD_LIST)
|
|
BOOST_TEST_EQ( h0, hv( std::forward_list<char>( s.begin(), s.end() ) ) );
|
|
#endif
|
|
|
|
return boost::report_errors();
|
|
}
|