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// <list>
10
11// void unique(); // before C++20
12// size_type unique(); // C++20 and later
13
14#include <list>
15#include <cassert>
16
17#include "test_macros.h"
18#include "min_allocator.h"
19
20int main(int, char**) {
21 {
22 int a1[] = {2, 1, 1, 4, 4, 4, 4, 3, 3};
23 int a2[] = {2, 1, 4, 3};
24 typedef std::list<int> L;
25 L c(a1, a1 + sizeof(a1) / sizeof(a1[0]));
26#if TEST_STD_VER > 17
27 ASSERT_SAME_TYPE(L::size_type, decltype(c.unique()));
28 assert(c.unique() == 5);
29#else
30 ASSERT_SAME_TYPE(void, decltype(c.unique()));
31 c.unique();
32#endif
33 assert(c == std::list<int>(a2, a2 + 4));
34 }
35#if TEST_STD_VER >= 11
36 {
37 int a1[] = {2, 1, 1, 4, 4, 4, 4, 3, 3};
38 int a2[] = {2, 1, 4, 3};
39 std::list<int, min_allocator<int>> c(a1, a1 + sizeof(a1) / sizeof(a1[0]));
40# if TEST_STD_VER > 17
41 assert(c.unique() == 5);
42# else
43 c.unique();
44# endif
45 assert((c == std::list<int, min_allocator<int>>(a2, a2 + 4)));
46 }
47#endif
48
49 return 0;
50}
51

source code of libcxx/test/std/containers/sequences/list/list.ops/unique.pass.cpp