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Copy patharray_access_test.cpp
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117 lines (88 loc) · 2.58 KB
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// Copyright 2025 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#define BOOST_ENABLE_ASSERT_HANDLER
#include <boost/array.hpp>
#include <boost/core/lightweight_test.hpp>
#include <cstddef>
struct assertion_failure
{
};
namespace boost
{
void assertion_failed( char const* /*expr*/, char const* /*function*/, char const* /*file*/, long /*line*/ )
{
throw assertion_failure();
}
void assertion_failed_msg( char const* /*expr*/, char const* /*msg*/, char const* /*function*/, char const* /*file*/, long /*line*/ )
{
throw assertion_failure();
}
} // namespace boost
template<class T, std::size_t N> void test()
{
{
boost::array<T, N> a = {{}};
T* p1 = a.data();
for( std::size_t i = 0; i < N; ++i )
{
T* p2 = &a[ i ];
T* p3 = &a.at( i );
BOOST_TEST_EQ( p2, p1 + i );
BOOST_TEST_EQ( p3, p1 + i );
}
{
T* p2 = &a.front();
T* p3 = &a.back();
BOOST_TEST_EQ( p2, p1 + 0 );
BOOST_TEST_EQ( p3, p1 + N - 1 );
}
BOOST_TEST_THROWS( a.at( N ), std::out_of_range );
BOOST_TEST_THROWS( a[ N ], assertion_failure );
}
{
boost::array<T, N> const a = {{}};
T const* p1 = a.data();
for( std::size_t i = 0; i < N; ++i )
{
T const* p2 = &a[ i ];
T const* p3 = &a.at( i );
BOOST_TEST_EQ( p2, p1 + i );
BOOST_TEST_EQ( p3, p1 + i );
}
{
T const* p2 = &a.front();
T const* p3 = &a.back();
BOOST_TEST_EQ( p2, p1 + 0 );
BOOST_TEST_EQ( p3, p1 + N - 1 );
}
BOOST_TEST_THROWS( a.at( N ), std::out_of_range );
BOOST_TEST_THROWS( a[ N ], assertion_failure );
}
}
template<class T> void test2()
{
{
boost::array<T, 0> a = {};
BOOST_TEST_THROWS( a.at( 0 ), std::out_of_range );
BOOST_TEST_THROWS( a[ 0 ], std::out_of_range );
BOOST_TEST_THROWS( a.front(), std::out_of_range );
BOOST_TEST_THROWS( a.back(), std::out_of_range );
}
{
boost::array<T, 0> const a = {};
BOOST_TEST_THROWS( a.at( 0 ), std::out_of_range );
BOOST_TEST_THROWS( a[ 0 ], std::out_of_range );
BOOST_TEST_THROWS( a.front(), std::out_of_range );
BOOST_TEST_THROWS( a.back(), std::out_of_range );
}
}
int main()
{
test<int, 1>();
test<int, 7>();
test<int const, 1>();
test<int const, 7>();
test2<int>();
return boost::report_errors();
}