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

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do run { target c++17 } }
   3
   4 // Copyright (C) 2014-2020 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <any>
  22 #include <testsuite_hooks.h>
  23
  24 using std::any;
  25
  26 void test01()
  27 {
  28   any x;
  29   any y;
  30   y = x;
  31   VERIFY( !x.has_value() );
  32   VERIFY( !y.has_value() );
  33
  34   y = std::move(x);
  35   VERIFY( !x.has_value() );
  36   VERIFY( !y.has_value() );
  37 }
  38
  39 void test02()
  40 {
  41   any x(1);
  42   any y;
  43   y = x;
  44   VERIFY( x.has_value() );
  45   VERIFY( y.has_value() );
  46
  47   x = std::move(y);
  48   VERIFY( x.has_value() );
  49   VERIFY( !y.has_value() );
  50
  51   x = y;
  52   VERIFY( !x.has_value() );
  53   VERIFY( !y.has_value() );
  54 }
  55
  56 int main()
  57 {
  58   test01();
  59   test02();
  60 }