test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc.pass.cpp

//===----------------------------------------------------------------------===//
//
//                     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.
//
//===----------------------------------------------------------------------===//

// <tuple>

// template <class... Types> class tuple;

// template <class Alloc>
//   tuple(allocator_arg_t, const Alloc& a);

// UNSUPPORTED: c++98, c++03

#include <tuple>
#include <cassert>

#include "DefaultOnly.h"
#include "allocators.h"
#include "../alloc_first.h"
#include "../alloc_last.h"

int main()
{
    {
        std::tuple<> t(std::allocator_arg, A1<int>());
    }
    {
        std::tuple<int> t(std::allocator_arg, A1<int>());
        assert(std::get<0>(t) == 0);
    }
    {
        std::tuple<DefaultOnly> t(std::allocator_arg, A1<int>());
        assert(std::get<0>(t) == DefaultOnly());
    }
    {
        assert(!alloc_first::allocator_constructed);
        std::tuple<alloc_first> t(std::allocator_arg, A1<int>(5));
        assert(alloc_first::allocator_constructed);
        assert(std::get<0>(t) == alloc_first());
    }
    {
        assert(!alloc_last::allocator_constructed);
        std::tuple<alloc_last> t(std::allocator_arg, A1<int>(5));
        assert(alloc_last::allocator_constructed);
        assert(std::get<0>(t) == alloc_last());
    }
    {
        alloc_first::allocator_constructed = false;
        std::tuple<DefaultOnly, alloc_first> t(std::allocator_arg, A1<int>(5));
        assert(std::get<0>(t) == DefaultOnly());
        assert(alloc_first::allocator_constructed);
        assert(std::get<1>(t) == alloc_first());
    }
    {
        alloc_first::allocator_constructed = false;
        alloc_last::allocator_constructed = false;
        std::tuple<DefaultOnly, alloc_first, alloc_last> t(std::allocator_arg,
                                                           A1<int>(5));
        assert(std::get<0>(t) == DefaultOnly());
        assert(alloc_first::allocator_constructed);
        assert(std::get<1>(t) == alloc_first());
        assert(alloc_last::allocator_constructed);
        assert(std::get<2>(t) == alloc_last());
    }
    {
        alloc_first::allocator_constructed = false;
        alloc_last::allocator_constructed = false;
        std::tuple<DefaultOnly, alloc_first, alloc_last> t(std::allocator_arg,
                                                           A2<int>(5));
        assert(std::get<0>(t) == DefaultOnly());
        assert(!alloc_first::allocator_constructed);
        assert(std::get<1>(t) == alloc_first());
        assert(!alloc_last::allocator_constructed);
        assert(std::get<2>(t) == alloc_last());
    }
}