libcxx/test/std/re/re.results/re.results.const/move_assign.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 // UNSUPPORTED: c++03
   9
  10 // <regex>
  11
  12 // class match_results<BidirectionalIterator, Allocator>
  13
  14 // match_results& operator=(match_results&& m);
  15
  16 #include <regex>
  17 #include <cassert>
  18 #include "test_macros.h"
  19 #include "test_allocator.h"
  20
  21 template <class CharT, class Allocator>
  22 void
  23 test(const Allocator& a)
  24 {
  25     typedef std::match_results<const CharT*, Allocator> SM;
  26     SM m0(a);
  27     SM m1;
  28
  29     m1 = std::move(m0);
  30     assert(m1.size()          == 0);
  31     assert(!m1.ready());
  32     if (std::allocator_traits<Allocator>::propagate_on_container_move_assignment::value)
  33         assert(m1.get_allocator() == a);
  34     else
  35         assert(m1.get_allocator() == Allocator());
  36 }
  37
  38 int main(int, char**)
  39 {
  40     test<char>   (std::allocator<std::sub_match<const char *> >());
  41     test<wchar_t>(std::allocator<std::sub_match<const wchar_t *> >());
  42
  43 //  test_allocator has POCMA -> false
  44     test<char>   (test_allocator<std::sub_match<const char*> >(3));
  45     test<wchar_t>(test_allocator<std::sub_match<const wchar_t*> >(3));
  46
  47 //  other_allocator has POCMA -> true
  48     test<char>   (other_allocator<std::sub_match<const char*> >(3));
  49     test<wchar_t>(other_allocator<std::sub_match<const wchar_t*> >(3));
  50
  51   return 0;
  52 }