libstdc++-v3/testsuite/21_strings/basic_string_view/operations/rfind/char/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 #include <string_view>
  22 #include <testsuite_hooks.h>
  23
  24 // basic_string_view rfind
  25
  26 void
  27 test01()
  28 {
  29   typedef std::string_view::size_type csize_type;
  30   typedef std::string_view::const_reference cref;
  31   typedef std::string_view::reference ref;
  32   csize_type npos = std::string_view::npos;
  33   csize_type csz01, csz02;
  34
  35   const char str_lit01[] = "mave";
  36   const std::string_view str01("mavericks, santa cruz");
  37   std::string_view str02(str_lit01);
  38   std::string_view str03("s, s");
  39   std::string_view str04;
  40
  41   // size_type rfind(const string_view&, size_type pos = 0) const;
  42   csz01 = str01.rfind(str01);
  43   VERIFY( csz01 == 0 );
  44   csz01 = str01.rfind(str01, 4);
  45   VERIFY( csz01 == 0 );
  46   csz01 = str01.rfind(str02,3);
  47   VERIFY( csz01 == 0 );
  48   csz01 = str01.rfind(str02);
  49   VERIFY( csz01 == 0 );
  50   csz01 = str01.rfind(str03);
  51   VERIFY( csz01 == 8 );
  52   csz01 = str01.rfind(str03, 3);
  53   VERIFY( csz01 == npos );
  54   csz01 = str01.rfind(str03, 12);
  55   VERIFY( csz01 == 8 );
  56
  57   // An empty string_view consists of no characters
  58   // therefore it should be found at every point in a string_view,
  59   // except beyond the end
  60   csz01 = str01.rfind(str04, 0);
  61   VERIFY( csz01 == 0 );
  62   csz01 = str01.rfind(str04, 5);
  63   VERIFY( csz01 == 5 );
  64   csz01 = str01.rfind(str04, str01.size());
  65   VERIFY( csz01 == str01.size() );
  66   csz01 = str01.rfind(str04, str01.size()+1);
  67   VERIFY( csz01 == str01.size() );
  68
  69   // size_type rfind(const char* s, size_type pos, size_type n) const;
  70   csz01 = str01.rfind(str_lit01, 0, 3);
  71   VERIFY( csz01 == 0 );
  72   csz01 = str01.rfind(str_lit01, 3, 0);
  73   VERIFY( csz01 == 3 );
  74
  75   // size_type rfind(const char* s, size_type pos = 0) const;
  76   csz01 = str01.rfind(str_lit01);
  77   VERIFY( csz01 == 0 );
  78   csz01 = str01.rfind(str_lit01, 3);
  79   VERIFY( csz01 == 0 );
  80
  81   // size_type rfind(char c, size_type pos = 0) const;
  82   csz01 = str01.rfind('z');
  83   csz02 = str01.size() - 1;
  84   VERIFY( csz01 == csz02 );
  85   csz01 = str01.rfind('/');
  86   VERIFY( csz01 == npos );
  87 }
  88
  89 int
  90 main()
  91 {
  92   test01();
  93
  94   return 0;
  95 }