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64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
// Copyright 2017, 2024 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/hash2/hash_append.hpp>
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#include <boost/hash2/fnv1a.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <boost/config.hpp>
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#include <string>
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#include <cstdint>
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#if defined(BOOST_MSVC) && BOOST_MSVC < 1920
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# pragma warning(disable: 4307) // integral constant overflow
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#endif
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template<class Hash, class Flavor, class T>
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BOOST_CXX14_CONSTEXPR typename Hash::result_type test()
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{
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unsigned char w[] = { 1, 2, 3, 4 };
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std::basic_string<T> v( w, w + sizeof(w) / sizeof(w[0]) );
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Hash h;
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Flavor f{};
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boost::hash2::hash_append( h, f, v );
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return h.result();
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}
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#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
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#if !( defined(__cpp_lib_constexpr_string) && __cpp_lib_constexpr_string >= 201907L )
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# define TEST_EQ(x1, x2) BOOST_TEST_EQ(x1, x2)
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#else
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# define TEST_EQ(x1, x2) BOOST_TEST_EQ(x1, x2); STATIC_ASSERT(x1 == x2)
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#endif
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int main()
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{
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using namespace boost::hash2;
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TEST_EQ( (test<fnv1a_32, little_endian_flavor, char>()), 2227238665 );
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TEST_EQ( (test<fnv1a_32, big_endian_flavor, char>()), 3245468929 );
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#if defined(__cpp_char8_t) && __cpp_char8_t >= 201811L
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TEST_EQ( (test<fnv1a_32, little_endian_flavor, char8_t>()), 2227238665 );
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TEST_EQ( (test<fnv1a_32, big_endian_flavor, char8_t>()), 3245468929 );
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#endif
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TEST_EQ( (test<fnv1a_32, little_endian_flavor, char16_t>()), 2981571797 );
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TEST_EQ( (test<fnv1a_32, big_endian_flavor, char16_t>()), 1063054677 );
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TEST_EQ( (test<fnv1a_32, little_endian_flavor, char32_t>()), 1745310485 );
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TEST_EQ( (test<fnv1a_32, big_endian_flavor, char32_t>()), 3959736277 );
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return boost::report_errors();
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}
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