libcxx/test/std/utilities/any/any.class/any.modifiers/reset.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
  10
  11 // <any>
  12
  13 // any::reset() noexcept
  14
  15 #include <any>
  16 #include <cassert>
  17
  18 #include "test_macros.h"
  19 #include "any_helpers.h"
  20
  21 int main(int, char**)
  22 {
  23     // empty
  24     {
  25         std::any a;
  26         ASSERT_NOEXCEPT(a.reset());
  27
  28         assertEmpty(a);
  29
  30         a.reset();
  31
  32         assertEmpty(a);
  33     }
  34     // small object
  35     {
  36         std::any a = small(1);
  37         assert(small::count == 1);
  38         assertContains<small>(a, 1);
  39
  40         a.reset();
  41
  42         assertEmpty<small>(a);
  43         assert(small::count == 0);
  44     }
  45     // large object
  46     {
  47         std::any a = large(1);
  48         assert(large::count == 1);
  49         assertContains<large>(a, 1);
  50
  51         a.reset();
  52
  53         assertEmpty<large>(a);
  54         assert(large::count == 0);
  55     }
  56
  57   return 0;
  58 }