1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // <tuple>
10
11 // template <class... Types> class tuple;
12
13 // void swap(tuple& rhs);
14
15 // UNSUPPORTED: c++03
16
17 #include <tuple>
18 #include <cassert>
19
20 #include "test_macros.h"
21 #include "MoveOnly.h"
22
main(int,char **)23 int main(int, char**)
24 {
25 {
26 typedef std::tuple<> T;
27 T t0;
28 T t1;
29 t0.swap(t1);
30 }
31 {
32 typedef std::tuple<MoveOnly> T;
33 T t0(MoveOnly(0));
34 T t1(MoveOnly(1));
35 t0.swap(t1);
36 assert(std::get<0>(t0) == 1);
37 assert(std::get<0>(t1) == 0);
38 }
39 {
40 typedef std::tuple<MoveOnly, MoveOnly> T;
41 T t0(MoveOnly(0), MoveOnly(1));
42 T t1(MoveOnly(2), MoveOnly(3));
43 t0.swap(t1);
44 assert(std::get<0>(t0) == 2);
45 assert(std::get<1>(t0) == 3);
46 assert(std::get<0>(t1) == 0);
47 assert(std::get<1>(t1) == 1);
48 }
49 {
50 typedef std::tuple<MoveOnly, MoveOnly, MoveOnly> T;
51 T t0(MoveOnly(0), MoveOnly(1), MoveOnly(2));
52 T t1(MoveOnly(3), MoveOnly(4), MoveOnly(5));
53 t0.swap(t1);
54 assert(std::get<0>(t0) == 3);
55 assert(std::get<1>(t0) == 4);
56 assert(std::get<2>(t0) == 5);
57 assert(std::get<0>(t1) == 0);
58 assert(std::get<1>(t1) == 1);
59 assert(std::get<2>(t1) == 2);
60 }
61
62 return 0;
63 }
64