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83ffe9cd | 1 | // Copyright (C) 2020-2023 Free Software Foundation, Inc. |
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2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
7dbb6913 | 18 | // { dg-do run { target c++20 } } |
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19 | |
20 | #include <algorithm> | |
21 | #include <testsuite_hooks.h> | |
22 | #include <testsuite_iterators.h> | |
23 | ||
24 | using __gnu_test::test_range; | |
25 | using __gnu_test::test_container; | |
26 | using __gnu_test::bidirectional_iterator_wrapper; | |
27 | using __gnu_test::random_access_iterator_wrapper; | |
28 | ||
29 | namespace ranges = std::ranges; | |
30 | ||
31 | template<template<typename> typename wrapper> | |
32 | void | |
33 | test01() | |
34 | { | |
35 | int x[] = { 1, 2, 3, 4 }; | |
36 | test_container<int, wrapper> cx(x); | |
37 | const int y[] = { 4, 3, 2, 1 }; | |
38 | ||
39 | auto res = ranges::reverse(cx); | |
40 | VERIFY( res == ranges::end(cx) ); | |
41 | VERIFY( ranges::equal(cx, y) ); | |
42 | } | |
43 | ||
44 | template<template<typename> typename wrapper> | |
45 | void | |
46 | test02() | |
47 | { | |
48 | int x[] = { 1, 2, 3, 4, 5 }; | |
49 | test_range<int, wrapper> rx(x); | |
50 | const int y[] = { 5, 4, 3, 2, 1 }; | |
51 | ||
52 | auto res = ranges::reverse(rx); | |
53 | VERIFY( res == ranges::end(rx) ); | |
54 | VERIFY( ranges::equal(rx, y) ); | |
55 | } | |
56 | ||
57 | constexpr bool | |
58 | test03() | |
59 | { | |
60 | int x[] = { 1, 2, 3 }; | |
61 | const int y[] = { 2, 1, 3 }; | |
62 | ranges::reverse(x, x+2); | |
63 | return ranges::equal(x, y); | |
64 | } | |
65 | ||
66 | int | |
67 | main() | |
68 | { | |
69 | test01<bidirectional_iterator_wrapper>(); | |
70 | test02<bidirectional_iterator_wrapper>(); | |
71 | ||
72 | test01<random_access_iterator_wrapper>(); | |
73 | test02<random_access_iterator_wrapper>(); | |
74 | ||
75 | static_assert(test03()); | |
76 | } |