libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc

   1 // { dg-options "-std=gnu++17" }
   2
   3 // Copyright (C) 2016-2018 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 // [string::compare]
  21
  22 #include <string>
  23 #include <testsuite_hooks.h>
  24
  25 void
  26 test03()
  27 {
  28   std::wstring_view str1(L"foobar");
  29   std::wstring str2(L"foobar");
  30
  31   auto x = str2.compare(str1);
  32   VERIFY (x == 0);
  33
  34   str1 = L"bar";
  35   x = str2.compare(str1);
  36   VERIFY (x > 0);
  37
  38   str1 = L"foobar";
  39   str2 = L"bar";
  40   x = str2.compare(str1);
  41   VERIFY (x < 0);
  42   x = str2.compare(0, 3, str1, 3, 3);
  43   VERIFY (x == 0);
  44
  45   str1 = L"bar";
  46   str2 = L"foobar";
  47   x = str2.compare(3, 3, str1);
  48   VERIFY (x == 0);
  49 }
  50
  51 // PR libstdc++/77264
  52 void
  53 test04()
  54 {
  55   const std::wstring str(L"a");
  56
  57   wchar_t c = L'a';
  58   int res = str.compare(0, 1, &c, 1);
  59   VERIFY ( !res );
  60
  61   wchar_t arr[] = L"a";
  62   res = str.compare(0, 1, arr, 1);
  63   VERIFY ( !res );
  64
  65   const wchar_t carr[] = L"a";
  66   res = str.compare(0, 1, carr, 1);
  67   VERIFY ( !res );
  68
  69   struct S {
  70     operator wchar_t*() { return &c; }
  71     operator std::wstring_view() { return L"!"; }
  72     wchar_t c = L'a';
  73   };
  74
  75   res = str.compare(0, 1, S{}, 1);
  76   VERIFY ( !res );
  77 }
  78
  79 int main()
  80 {
  81   test03();
  82   test04();
  83   return 0;
  84 }