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 {
23 int a1[] = {2, 1, 1, 4, 4, 4, 4, 3, 3};
24 int a2[] = {2, 1, 4, 3};
25 typedef std::list<int> L;
26 L c(a1, a1+sizeof(a1)/sizeof(a1[0]));
27#if TEST_STD_VER > 17
28 ASSERT_SAME_TYPE(L::size_type, decltype(c.unique()));
29 assert(c.unique() == 5);
30#else
31 ASSERT_SAME_TYPE(void, decltype(c.unique()));
32 c.unique();
33#endif
34 assert(c == std::list<int>(a2, a2+4));
35 }
36#if TEST_STD_VER >= 11
37 {
38 int a1[] = {2, 1, 1, 4, 4, 4, 4, 3, 3};
39 int a2[] = {2, 1, 4, 3};
40 std::list<int, min_allocator<int>> c(a1, a1+sizeof(a1)/sizeof(a1[0]));
41#if TEST_STD_VER > 17
42 assert(c.unique() == 5);
43#else
44 c.unique();
45#endif
46 assert((c == std::list<int, min_allocator<int>>(a2, a2+4)));
47 }
48#endif
49
50 return 0;
51}
52

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