//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// <chrono>
// class weekday_indexed;

//                     weekday_indexed() = default;
//  constexpr weekday_indexed(const chrono::weekday& wd, unsigned index) noexcept;
//
//  Effects: Constructs an object of type weekday_indexed by initializing wd_ with wd and index_ with index.
//    The values held are unspecified if !wd.ok() or index is not in the range [1, 5].
//
//  constexpr chrono::weekday weekday() const noexcept;
//  constexpr unsigned        index()   const noexcept;
//  constexpr bool ok()                 const noexcept;

#include <chrono>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

int main()
{
    using weekday  = std::chrono::weekday;
    using weekday_indexed = std::chrono::weekday_indexed;

    ASSERT_NOEXCEPT(weekday_indexed{});
    ASSERT_NOEXCEPT(weekday_indexed(weekday{1}, 1));

    constexpr weekday_indexed wdi0{};
    static_assert( wdi0.weekday() == weekday{}, "");
    static_assert( wdi0.index() == 0,           "");
    static_assert(!wdi0.ok(),                   "");

    constexpr weekday_indexed wdi1{std::chrono::Sunday, 2};
    static_assert( wdi1.weekday() == std::chrono::Sunday, "");
    static_assert( wdi1.index() == 2,                     "");
    static_assert( wdi1.ok(),                             "");

    for (unsigned i = 1; i <= 5; ++i)
    {
        weekday_indexed wdi(std::chrono::Tuesday, i);
        assert( wdi.weekday() == std::chrono::Tuesday);
        assert( wdi.index() == i);
        assert( wdi.ok());
    }

    for (unsigned i = 6; i <= 20; ++i)
    {
        weekday_indexed wdi(std::chrono::Tuesday, i);
        assert(!wdi.ok());
    }
}