libcxx/test/std/containers/sequences/deque/deque.modifiers/prepend_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 // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME
  11
  12 // template<container-compatible-range<T> R>
  13 //   constexpr void prepend_range(R&& rg); // C++23
  14
  15 #include <deque>
  16
  17 #include "../../insert_range_sequence_containers.h"
  18 #include "test_macros.h"
  19
  20 // Tested cases:
  21 // - different kinds of insertions (prepending an {empty/one-element/mid-sized/long range} into an
  22 //   {empty/one-element/full} container);
  23 // - prepending move-only elements;
  24 // - an exception is thrown when copying the elements or when allocating new elements.
  25 int main(int, char**) {
  26   static_assert(test_constraints_prepend_range<std::deque, int, double>());
  27
  28   for_all_iterators_and_allocators<int, const int*>([]<class Iter, class Sent, class Alloc>() {
  29     test_sequence_prepend_range<std::deque<int, Alloc>, Iter, Sent>([]([[maybe_unused]] auto&& c) {
  30       LIBCPP_ASSERT(c.__invariants());
  31     });
  32   });
  33   test_sequence_prepend_range_move_only<std::deque>();
  34
  35   test_prepend_range_exception_safety_throwing_copy<std::deque>();
  36   test_prepend_range_exception_safety_throwing_allocator<std::deque, int>();
  37
  38   return 0;
  39 }