libcxx/test/std/containers/associative/multiset/multiset.cons/from_range.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 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
  10
  11 // template<container-compatible-range<value_type> R>
  12 //   multiset(from_range_t, R&& rg, const Compare& comp = Compare(), const Allocator& = Allocator()); // C++23
  13 //
  14 // template<container-compatible-range<value_type> R>
  15 //   multiset(from_range_t, R&& rg, const Allocator& a))
  16 //     : multiset(from_range, std::forward<R>(rg), Compare(), a) { } // C++23
  17
  18 #include <algorithm>
  19 #include <array>
  20 #include <set>
  21
  22 #include "../../from_range_associative_containers.h"
  23 #include "test_macros.h"
  24
  25 void test_duplicates() {
  26   std::array input = {1, 2, 3, 3, 3, 4, 2, 1, 2};
  27   auto c = std::multiset<int>(std::from_range, input);
  28   assert(std::ranges::is_permutation(input, c));
  29 }
  30
  31 int main(int, char**) {
  32   for_all_iterators_and_allocators<int>([]<class Iter, class Sent, class Alloc>() {
  33     test_associative_set<std::multiset, int, Iter, Sent, test_less<int>, Alloc>();
  34   });
  35   test_associative_set_move_only<std::multiset>();
  36   test_duplicates();
  37
  38   static_assert(test_set_constraints<std::multiset, int, double>());
  39
  40   test_set_exception_safety_throwing_copy<std::multiset>();
  41   test_set_exception_safety_throwing_allocator<std::multiset, int>();
  42
  43   return 0;
  44 }