1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <tuple>
11
12// template <class... Types> class tuple;
13
14// template <class... Types>
15//   void swap(tuple<Types...>& x, tuple<Types...>& y);
16
17// UNSUPPORTED: c++98, c++03
18
19#include <tuple>
20#include <cassert>
21
22#include "MoveOnly.h"
23
24int main()
25{
26    {
27        typedef std::tuple<> T;
28        T t0;
29        T t1;
30        swap(t0, t1);
31    }
32    {
33        typedef std::tuple<MoveOnly> T;
34        T t0(MoveOnly(0));
35        T t1(MoveOnly(1));
36        swap(t0, t1);
37        assert(std::get<0>(t0) == 1);
38        assert(std::get<0>(t1) == 0);
39    }
40    {
41        typedef std::tuple<MoveOnly, MoveOnly> T;
42        T t0(MoveOnly(0), MoveOnly(1));
43        T t1(MoveOnly(2), MoveOnly(3));
44        swap(t0, t1);
45        assert(std::get<0>(t0) == 2);
46        assert(std::get<1>(t0) == 3);
47        assert(std::get<0>(t1) == 0);
48        assert(std::get<1>(t1) == 1);
49    }
50    {
51        typedef std::tuple<MoveOnly, MoveOnly, MoveOnly> T;
52        T t0(MoveOnly(0), MoveOnly(1), MoveOnly(2));
53        T t1(MoveOnly(3), MoveOnly(4), MoveOnly(5));
54        swap(t0, t1);
55        assert(std::get<0>(t0) == 3);
56        assert(std::get<1>(t0) == 4);
57        assert(std::get<2>(t0) == 5);
58        assert(std::get<0>(t1) == 0);
59        assert(std::get<1>(t1) == 1);
60        assert(std::get<2>(t1) == 2);
61    }
62}
63