libstdc++-v3/testsuite/21_strings/basic_string_view/operations/find/wchar_t/1.cc

   1 // { dg-do run { target c++17 } }
   2
   3 // Copyright (C) 2013-2021 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 find
  21
  22 #include <string_view>
  23 #include <testsuite_hooks.h>
  24
  25 void
  26 test01()
  27 {
  28   typedef std::wstring_view::size_type csize_type;
  29   typedef std::wstring_view::const_reference cref;
  30   typedef std::wstring_view::reference ref;
  31   csize_type npos = std::wstring_view::npos;
  32   csize_type csz01, csz02;
  33
  34   const wchar_t str_lit01[] = L"mave";
  35   const std::wstring_view str01(L"mavericks, santa cruz");
  36   std::wstring_view str02(str_lit01);
  37   std::wstring_view str03(L"s, s");
  38   std::wstring_view str04;
  39
  40   // size_type find(const wstring_view&, size_type pos = 0) const;
  41   csz01 = str01.find(str01);
  42   VERIFY( csz01 == 0 );
  43   csz01 = str01.find(str01, 4);
  44   VERIFY( csz01 == npos );
  45   csz01 = str01.find(str02, 0);
  46   VERIFY( csz01 == 0 );
  47   csz01 = str01.find(str02, 3);
  48   VERIFY( csz01 == npos );
  49   csz01 = str01.find(str03, 0);
  50   VERIFY( csz01 == 8 );
  51   csz01 = str01.find(str03, 3);
  52   VERIFY( csz01 == 8 );
  53   csz01 = str01.find(str03, 12);
  54   VERIFY( csz01 == npos );
  55
  56   // An empty string_view consists of no characters
  57   // therefore it should be found at every point in a string_view,
  58   // except beyond the end
  59   csz01 = str01.find(str04, 0);
  60   VERIFY( csz01 == 0 );
  61   csz01 = str01.find(str04, 5);
  62   VERIFY( csz01 == 5 );
  63   csz01 = str01.find(str04, str01.size());
  64   VERIFY( csz01 == str01.size() );
  65   csz01 = str01.find(str04, str01.size()+1);
  66   VERIFY( csz01 == npos );
  67
  68   // size_type find(const wchar_t* s, size_type pos, size_type n) const;
  69   csz01 = str01.find(str_lit01, 0, 3);
  70   VERIFY( csz01 == 0 );
  71   csz01 = str01.find(str_lit01, 3, 0);
  72   VERIFY( csz01 == 3 );
  73
  74   // size_type find(const wchar_t* s, size_type pos = 0) const;
  75   csz01 = str01.find(str_lit01);
  76   VERIFY( csz01 == 0 );
  77   csz01 = str01.find(str_lit01, 3);
  78   VERIFY( csz01 == npos );
  79
  80   // size_type find(wchar_t c, size_type pos = 0) const;
  81   csz01 = str01.find(L'z');
  82   csz02 = str01.size() - 1;
  83   VERIFY( csz01 == csz02 );
  84   csz01 = str01.find(L'/');
  85   VERIFY( csz01 == npos );
  86 }
  87
  88 constexpr bool
  89 test02()
  90 {
  91   typedef std::wstring_view::size_type csize_type;
  92   typedef std::wstring_view::const_reference cref;
  93   typedef std::wstring_view::reference ref;
  94   csize_type npos = std::wstring_view::npos;
  95   csize_type csz01 = 0, csz02 = 0;
  96
  97   const wchar_t str_lit01[] = L"mave";
  98   const std::wstring_view str01(L"mavericks, santa cruz");
  99   std::wstring_view str02(str_lit01);
 100   std::wstring_view str03(L"s, s");
 101   std::wstring_view str04;
 102
 103 #undef VERIFY
 104 #define VERIFY(x) if(!(x)) return false
 105
 106   // size_type find(const wstring_view&, size_type pos = 0) const;
 107   csz01 = str01.find(str01);
 108   VERIFY( csz01 == 0 );
 109   csz01 = str01.find(str01, 4);
 110   VERIFY( csz01 == npos );
 111   csz01 = str01.find(str02, 0);
 112   VERIFY( csz01 == 0 );
 113   csz01 = str01.find(str02, 3);
 114   VERIFY( csz01 == npos );
 115   csz01 = str01.find(str03, 0);
 116   VERIFY( csz01 == 8 );
 117   csz01 = str01.find(str03, 3);
 118   VERIFY( csz01 == 8 );
 119   csz01 = str01.find(str03, 12);
 120   VERIFY( csz01 == npos );
 121
 122   // An empty string_view consists of no characters
 123   // therefore it should be found at every point in a string_view,
 124   // except beyond the end
 125   csz01 = str01.find(str04, 0);
 126   VERIFY( csz01 == 0 );
 127   csz01 = str01.find(str04, 5);
 128   VERIFY( csz01 == 5 );
 129   csz01 = str01.find(str04, str01.size());
 130   VERIFY( csz01 == str01.size() );
 131   csz01 = str01.find(str04, str01.size()+1);
 132   VERIFY( csz01 == npos );
 133
 134   // size_type find(const wchar_t* s, size_type pos, size_type n) const;
 135   csz01 = str01.find(str_lit01, 0, 3);
 136   VERIFY( csz01 == 0 );
 137   csz01 = str01.find(str_lit01, 3, 0);
 138   VERIFY( csz01 == 3 );
 139
 140   // size_type find(const wchar_t* s, size_type pos = 0) const;
 141   csz01 = str01.find(str_lit01);
 142   VERIFY( csz01 == 0 );
 143   csz01 = str01.find(str_lit01, 3);
 144   VERIFY( csz01 == npos );
 145
 146   // size_type find(wchar_t c, size_type pos = 0) const;
 147   csz01 = str01.find(L'z');
 148   csz02 = str01.size() - 1;
 149   VERIFY( csz01 == csz02 );
 150   csz01 = str01.find(L'/');
 151   VERIFY( csz01 == npos );
 152
 153   return true;
 154 }
 155
 156 int
 157 main()
 158 {
 159   test01();
 160   static_assert( test02() );
 161
 162   return 0;
 163 }