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

   1 // { dg-options "-std=gnu++17" }
   2
   3 // Copyright (C) 2013-2020 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 #include <string_view>
  21 #include <testsuite_hooks.h>
  22
  23 void
  24 test01()
  25 {
  26   using std::wstring_view;
  27
  28   wstring_view str0{L"olympus mons"};
  29   wstring_view::const_pointer p = str0.data();
  30   str0.remove_suffix(2);
  31   VERIFY( str0.data() == p);
  32   VERIFY( str0.length() == 10 );
  33   VERIFY( str0 == wstring_view{L"olympus mo"} );
  34 }
  35
  36 constexpr bool
  37 test02()
  38 {
  39   using std::wstring_view;
  40
  41   wstring_view str0{L"olympus mons"};
  42   wstring_view::const_pointer p = str0.data();
  43   str0.remove_suffix(2);
  44   if ( str0.data() != p)
  45     return false;
  46   if ( str0.length() != 10 )
  47     return false;
  48   if ( str0 != wstring_view{L"olympus mo"} )
  49     return false;
  50
  51   return true;
  52 }
  53
  54 int
  55 main()
  56 {
  57   test01();
  58   static_assert( test02() );
  59
  60   return 0;
  61 }