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

   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
  20 int 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 }