libstdc++-v3/testsuite/21_strings/basic_string_view/operations/substr/wchar_t.cc

   1 // { dg-do run { target c++17 } }
   2
   3 // Copyright (C) 2013-2023 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::substr
  21
  22 #include <string_view>
  23 #include <testsuite_hooks.h>
  24
  25 #if __STDC_HOSTED__
  26 # include <stdexcept>
  27 #endif
  28
  29 void
  30 test01()
  31 {
  32   typedef std::wstring_view::size_type csize_type;
  33   typedef std::wstring_view::const_reference cref;
  34   typedef std::wstring_view::reference ref;
  35   csize_type csz01;
  36
  37   const wchar_t str_lit01[] = L"rockaway, pacifica";
  38   const std::wstring_view str01(str_lit01);
  39   std::wstring_view str02;
  40
  41   // basic_string_view<charT, _Traits, _Alloc>
  42   //  substr(size_type pos = 0, size_type n = npos) const;
  43   csz01 = str01.size();
  44   str02 = str01.substr(0, 1);
  45   VERIFY( str02 == L"r" );
  46   str02 = str01.substr(10);
  47   VERIFY( str02 == L"pacifica" );
  48
  49 #if __STDC_HOSTED__
  50   try
  51   {
  52     str02 = str01.substr(csz01 + 1);
  53     VERIFY( false );
  54   }
  55   catch(std::out_of_range& fail)
  56   {
  57     VERIFY( true );
  58   }
  59   catch(...)
  60   {
  61     VERIFY( false );
  62   }
  63
  64   try
  65   {
  66     str02 = str01.substr(csz01);
  67     VERIFY( str02.size() == 0 );
  68     VERIFY( str02.begin() == str01.end() );
  69     VERIFY( true );
  70   }
  71   catch(...)
  72   {
  73     VERIFY( false );
  74   }
  75 #endif // HOSTED
  76 }
  77
  78 int
  79 main()
  80 {
  81   test01();
  82
  83   return 0;
  84 }