libstdc++-v3/testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc

   1 // { dg-do run { target c++17 } }
   2
   3 // Copyright (C) 2013-2024 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 // basic_string_view element access
  21
  22 #include <string_view>
  23 #if __STDC_HOSTED__
  24 # include <stdexcept>
  25 #endif // HOSTED
  26 #include <testsuite_hooks.h>
  27
  28 void
  29 test01()
  30 {
  31   typedef std::wstring_view::size_type csize_type;
  32   typedef std::wstring_view::const_reference cref;
  33   typedef std::wstring_view::reference ref;
  34   csize_type csz01, csz02;
  35
  36   const std::wstring_view str01(L"tamarindo, costa rica");
  37   std::wstring_view str02(L"41st street beach, capitola, california");
  38   std::wstring_view str03;
  39
  40   // const_reference operator[] (size_type pos) const;
  41   csz01 = str01.size();
  42   cref cref1 = str01[csz01 - 1];
  43   VERIFY( cref1 == L'a' );
  44   // Undefined behavior at size().
  45   //cref cref2 = str01[csz01];
  46   //VERIFY( cref2 == wchar_t() );
  47
  48 #if __STDC_HOSTED__
  49   // const_reference at(size_type pos) const;
  50   csz01 = str01.size();
  51   cref cref3 = str01.at(csz01 - 1);
  52   VERIFY( cref3 == L'a' );
  53   try
  54   {
  55     (void) str01.at(csz01);
  56     VERIFY( false ); // Should not get here, as exception thrown.
  57   }
  58   catch (std::out_of_range& fail)
  59   {
  60     VERIFY( true );
  61   }
  62   catch (...)
  63   {
  64     VERIFY( false );
  65   }
  66 #endif // HOSTED
  67 }
  68
  69 int
  70 main()
  71 {
  72   test01();
  73
  74   return 0;
  75 }