// Copyright 2025 Peter Dimov

// Distributed under the Boost Software License, Version 1.0.

// https://www.boost.org/LICENSE_1_0.txt

#include <boost/array.hpp>

#include <boost/core/lightweight_test.hpp>

#include <boost/config.hpp>

#include <boost/config/workaround.hpp>

#include <cstddef>

#if defined(_MSC_VER)

# pragma warning(disable: 4702) // unreachable code

#endif

template<class T, std::size_t N> void test1()

{

boost::array<T, N> a = {{}};

for( std::size_t i = 0; i < N; ++i )

{

BOOST_TEST_EQ( a[i], T() );

}

}

template<class T, std::size_t N> void test2()

{

boost::array<T, N> a = {};

for( std::size_t i = 0; i < N; ++i )

{

BOOST_TEST_EQ( a[i], T() );

}

}

template<class T> void test3()

{

boost::array<T, 4> a = {{ 1, 2, 3, 4 }};

T b[ 4 ] = { 1, 2, 3, 4 };

BOOST_TEST_ALL_EQ( a.begin(), a.end(), b + 0, b + 4 );

}

template<class T> void test4()

{

boost::array<T, 4> a = { 1, 2, 3, 4 };

T b[ 4 ] = { 1, 2, 3, 4 };

BOOST_TEST_ALL_EQ( a.begin(), a.end(), b + 0, b + 4 );

}

int main()

{

test1<int, 0>();

test1<int, 1>();

test1<int, 7>();

test1<int const, 0>();

test1<int const, 1>();

test1<int const, 7>();

test2<int, 0>();

test2<int, 1>();

test2<int, 7>();

test2<int const, 0>();

#if BOOST_WORKAROUND(BOOST_MSVC, < 1910) || BOOST_WORKAROUND(BOOST_GCC, < 50000)

// = {} doesn't work for const T

#else

test2<int const, 1>();

test2<int const, 7>();

#endif

test3<int>();

test3<int const>();

test4<int>();

test4<int const>();

return boost::report_errors();

}