libstdc++-v3/testsuite/21_strings/basic_string_view/cons/wchar_t/1.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 constructors.
  21
  22 #include <string_view>
  23 #if __STDC_HOSTED__
  24 # include <string>
  25 #endif // HOSTED
  26 #include <cwchar>
  27 #include <testsuite_hooks.h>
  28
  29 void
  30 test01()
  31 {
  32   typedef std::wstring_view::size_type csize_type;
  33
  34   // basic_string_view()
  35   const std::wstring_view str00{};
  36   VERIFY( str00.length() == 0 );
  37   VERIFY( str00.data() == nullptr );
  38
  39   // basic_string_view(const char*)
  40   const wchar_t str_lit01[] = L"rodeo beach, marin";
  41   const std::wstring_view str01{str_lit01};
  42   VERIFY( str01.length() == 18 );
  43   VERIFY( str01.data() == str_lit01 );
  44   const std::wstring_view str02{L"baker beach, san francisco"};
  45   VERIFY( str02.length() == 26 );
  46
  47   // basic_string_view(const string_view&)
  48   std::wstring_view str04{str01};
  49   VERIFY( str04.length() == str01.length() );
  50   VERIFY( str04.data() == str01.data() );
  51
  52   // basic_string_view(const char* s)
  53   csize_type len_lit01 = wcslen(str_lit01);
  54   std::wstring_view str05{str_lit01, len_lit01};
  55   VERIFY( str05.length() == len_lit01 );
  56   VERIFY( str05.data() == str_lit01 );
  57
  58 #if __STDC_HOSTED__
  59   // basic_string_view(basic_string& s)
  60   std::wstring istr07(10, L'z');
  61   std::wstring_view str07{istr07};
  62   VERIFY( str07.length() == 10 );
  63 #endif // HOSTED
  64 }
  65
  66 int
  67 main()
  68 {
  69   test01();
  70
  71   return 0;
  72 }