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// Copyright 2024 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/uuid/uuid.hpp>
#include <boost/uuid/uuid_io.hpp>
#include <boost/uuid/random_generator.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/config.hpp>
#include <boost/config/pragma_message.hpp>
#include <random>
#include <vector>
#include <cstring>
#if defined(BOOST_UUID_HAS_THREE_WAY_COMPARISON)
BOOST_PRAGMA_MESSAGE( "Three way comparisons are tested: BOOST_UUID_HAS_THREE_WAY_COMPARISON=" BOOST_STRINGIZE(BOOST_UUID_HAS_THREE_WAY_COMPARISON) )
#elif !defined(__cpp_impl_three_way_comparison)
BOOST_PRAGMA_MESSAGE( "Three way comparisons not tested because __cpp_impl_three_way_comparison is not defined" )
#elif !defined(__cpp_lib_three_way_comparison)
BOOST_PRAGMA_MESSAGE( "Three way comparisons not tested because __cpp_lib_three_way_comparison is not defined" )
#else
BOOST_PRAGMA_MESSAGE( "Three way comparisons not tested: __cpp_impl_three_way_comparison=" BOOST_STRINGIZE(__cpp_impl_three_way_comparison) ", __cpp_lib_three_way_comparison=" BOOST_STRINGIZE(__cpp_lib_three_way_comparison) )
#endif
using namespace boost::uuids;
void test_comparison( uuid const& u1, uuid const& u2 )
{
int r = std::memcmp( u1.data, u2.data, 16 );
if( r == 0 )
{
BOOST_TEST_EQ( u1, u2 );
}
if( r < 0 )
{
BOOST_TEST_LT( u1, u2 );
}
if( r > 0 )
{
BOOST_TEST_GT( u1, u2 );
}
if( r <= 0 )
{
BOOST_TEST_LE( u1, u2 );
}
if( r >= 0 )
{
BOOST_TEST_GE( u1, u2 );
}
#if defined(BOOST_UUID_HAS_THREE_WAY_COMPARISON)
constexpr auto eq = std::strong_ordering::equal;
constexpr auto lt = std::strong_ordering::less;
constexpr auto gt = std::strong_ordering::greater;
if( r == 0 )
{
BOOST_TEST( ( u1 <=> u2 ) == eq );
}
if( r < 0 )
{
BOOST_TEST( ( u1 <=> u2 ) == lt );
}
if( r > 0 )
{
BOOST_TEST( ( u1 <=> u2 ) == gt );
}
#endif
}
int main()
{
std::vector<uuid> v;
{
uuid u1 = {};
v.push_back( u1 );
for( int i = 0; i < 16; ++i )
{
uuid u2( u1 );
u2.data[ i ] = 0x01;
v.push_back( u2 );
}
}
{
uuid u1 = {{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }};
v.push_back( u1 );
for( int i = 0; i < 16; ++i )
{
uuid u2( u1 );
u2.data[ i ] = 0xFE;
v.push_back( u2 );
}
}
{
std::mt19937 rng;
basic_random_generator<std::mt19937> gen( &rng );
for( int i = 0; i < 16; ++i )
{
v.push_back( gen() );
}
}
for( std::size_t i = 0, n = v.size(); i < n; ++i )
{
for( std::size_t j = 0; j < n; ++j )
{
test_comparison( v[ i ], v[ j ] );
}
}
return boost::report_errors();
}
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