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

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do run { target c++17 } }
   3
   4 // Copyright (C) 2013-2020 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 #include <string_view>
  22 #include <testsuite_hooks.h>
  23
  24 void
  25 test01()
  26 {
  27   using std::string_view;
  28
  29   string_view str0{"olympus mons"};
  30   string_view::const_pointer p = str0.data();
  31   str0.remove_suffix(2);
  32   VERIFY( str0.data() == p);
  33   VERIFY( str0.length() == 10 );
  34   VERIFY( str0 == string_view{"olympus mo"} );
  35 }
  36
  37 constexpr bool
  38 test02()
  39 {
  40   using std::string_view;
  41
  42   string_view str0{"olympus mons"};
  43   string_view::const_pointer p = str0.data();
  44   str0.remove_suffix(2);
  45   if ( str0.data() != p)
  46     return false;
  47   if ( str0.length() != 10 )
  48     return false;
  49   if ( str0 != string_view{"olympus mo"} )
  50     return false;
  51
  52   return true;
  53 }
  54
  55 int
  56 main()
  57 {
  58   test01();
  59   static_assert( test02() );
  60
  61   return 0;
  62 }