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

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do run { target c++17 } }
   3
   4 // Copyright (C) 2013-2021 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 // basic_string_view::substr
  22
  23 #include <string_view>
  24 #include <stdexcept>
  25 #include <testsuite_hooks.h>
  26
  27 void
  28 test01()
  29 {
  30   typedef std::wstring_view::size_type csize_type;
  31   typedef std::wstring_view::const_reference cref;
  32   typedef std::wstring_view::reference ref;
  33   csize_type csz01;
  34
  35   const wchar_t str_lit01[] = L"rockaway, pacifica";
  36   const std::wstring_view str01(str_lit01);
  37   std::wstring_view str02;
  38
  39   // basic_string_view<charT, _Traits, _Alloc>
  40   //  substr(size_type pos = 0, size_type n = npos) const;
  41   csz01 = str01.size();
  42   str02 = str01.substr(0, 1);
  43   VERIFY( str02 == L"r" );
  44   str02 = str01.substr(10);
  45   VERIFY( str02 == L"pacifica" );
  46
  47   try
  48   {
  49     str02 = str01.substr(csz01 + 1);
  50     VERIFY( false );
  51   }
  52   catch(std::out_of_range& fail)
  53   {
  54     VERIFY( true );
  55   }
  56   catch(...)
  57   {
  58     VERIFY( false );
  59   }
  60
  61   try
  62   {
  63     str02 = str01.substr(csz01);
  64     VERIFY( str02.size() == 0 );
  65     VERIFY( str02.begin() == str01.end() );
  66     VERIFY( true );
  67   }
  68   catch(...)
  69   {
  70     VERIFY( false );
  71   }
  72 }
  73
  74 int
  75 main()
  76 {
  77   test01();
  78
  79   return 0;
  80 }