libstdc++-v3/testsuite/20_util/any/assign/1.cc

   1 // { dg-do run { target c++17 } }
   2
   3 // Copyright (C) 2014-2024 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <any>
  21 #include <testsuite_hooks.h>
  22
  23 using std::any;
  24
  25 void test01()
  26 {
  27   any x;
  28   any y;
  29   y = x;
  30   VERIFY( !x.has_value() );
  31   VERIFY( !y.has_value() );
  32
  33   y = std::move(x);
  34   VERIFY( !x.has_value() );
  35   VERIFY( !y.has_value() );
  36 }
  37
  38 void test02()
  39 {
  40   any x(1);
  41   any y;
  42   y = x;
  43   VERIFY( x.has_value() );
  44   VERIFY( y.has_value() );
  45
  46   x = std::move(y);
  47   VERIFY( x.has_value() );
  48   VERIFY( !y.has_value() );
  49
  50   x = y;
  51   VERIFY( !x.has_value() );
  52   VERIFY( !y.has_value() );
  53 }
  54
  55 int main()
  56 {
  57   test01();
  58   test02();
  59 }