libstdc++-v3/testsuite/21_strings/basic_string/modifiers/replace/wchar_t/7.cc

   1 // { dg-do run { target c++17 } }
   2
   3 // Copyright (C) 2016-2022 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.modifiers]
  21
  22 #include <string>
  23 #include <testsuite_hooks.h>
  24
  25 void
  26 test03()
  27 {
  28   std::wstring_view str1(L"foo");
  29   std::wstring str2(L"bar");
  30   str2.replace(0, 3, str1);
  31   VERIFY (str2 == str1);
  32   str2 = L"foobar";
  33   str2.replace(3, 3, str1);
  34   VERIFY (str2 == L"foofoo");
  35   str2 = L"foobar";
  36   str2.replace(3, 3, str1, 0, 3);
  37   VERIFY (str2 == L"foofoo");
  38   str2 = L"foobar";
  39   str2.replace(3, 1024, str1, 0, 3);
  40   VERIFY (str2 == L"foofoo");
  41   str2 = L"foobar";
  42   str2.replace(3, 3, str1, 0, 1024);
  43   VERIFY (str2 == L"foofoo");
  44   str2 = L"foobar";
  45   str2.replace(str2.begin()+3, str2.begin()+6, str1);
  46   VERIFY (str2 == L"foofoo");
  47 }
  48
  49 // PR libstdc++/77264
  50 void
  51 test04()
  52 {
  53   std::wstring str(L"a");
  54
  55   wchar_t c = L'b';
  56   str.replace(0, 1, &c, 1);
  57   VERIFY (str[0] == c);
  58
  59   wchar_t arr[] = L"c";
  60   str.replace(0, 1, arr, 1);
  61   VERIFY (str[0] == arr[0]);
  62
  63   const wchar_t carr[] = L"d";
  64   str.replace(0, 1, carr, 1);
  65   VERIFY (str[0] == carr[0]);
  66
  67   struct S {
  68     operator wchar_t*() { return &c; }
  69     operator std::wstring_view() { return L"!"; }
  70     wchar_t c = L'e';
  71   };
  72
  73   str.replace(0, 1, S{}, 1);
  74   VERIFY (str[0] == S{}.c);
  75 }
  76
  77 int main()
  78 {
  79   test03();
  80   test04();
  81   return 0;
  82 }