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

   1 // { dg-do compile { target c++20 } }
   2
   3 // Copyright (C) 2018-2024 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 begins_with
  21
  22 #include <string_view>
  23
  24 void
  25 test01()
  26 {
  27   constexpr wchar_t cstr_dir[] = L"slugs/";
  28   constexpr std::wstring_view sv_dir(L"slugs/");
  29   constexpr wchar_t cstr_dir2[] = L"worms/";
  30   constexpr std::wstring_view sv_dir2(L"worms/");
  31
  32   constexpr std::wstring_view sv_test(L"slugs/slimy.jpg");
  33
  34   constexpr auto cstr_in_slugs = sv_test.starts_with(cstr_dir);
  35   static_assert(cstr_in_slugs);
  36   constexpr auto sv_in_slugs = sv_test.starts_with(sv_dir);
  37   static_assert(sv_in_slugs);
  38   constexpr auto char_s = sv_test.starts_with(L's');
  39   static_assert(char_s);
  40
  41   constexpr auto cstr_in_worms = sv_test.starts_with(cstr_dir2);
  42   static_assert(!cstr_in_worms);
  43   constexpr auto sv_in_worms = sv_test.starts_with(sv_dir2);
  44   static_assert(!sv_in_worms);
  45   constexpr auto char_w = sv_test.starts_with(L'w');
  46   static_assert(!char_w);
  47 }