libstdc++-v3/testsuite/21_strings/basic_string/modifiers/insert/wchar_t/3.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;
  30   str2.insert(0, str1);
  31   VERIFY (str2 == str1);
  32   str2.insert(3, str1);
  33   VERIFY (str2 == L"foofoo");
  34   std::wstring str4{str1};
  35   str4.insert(3, str1, 1, 2);
  36   VERIFY (str4 == L"foooo");
  37   str4.insert(5, str1, 1, 2);
  38   VERIFY (str4 == L"foooooo");
  39 }
  40
  41 // PR libstdc++/77264
  42 void
  43 test04()
  44 {
  45   std::wstring str(L"a");
  46
  47   wchar_t c = L'b';
  48   str.insert(0, &c, 1);
  49   VERIFY (str[0] == c);
  50
  51   wchar_t arr[] = L"c";
  52   str.insert(0, arr, 1);
  53   VERIFY (str[0] == arr[0]);
  54
  55   const wchar_t carr[] = L"d";
  56   str.insert(0, carr, 1);
  57   VERIFY (str[0] == carr[0]);
  58
  59   struct S {
  60     operator wchar_t*() { return &c; }
  61     operator std::wstring_view() { return L"!"; }
  62     wchar_t c = L'e';
  63   };
  64
  65   str.insert(0, S{}, 1);
  66   VERIFY (str[0] == S{}.c);
  67 }
  68
  69 int main()
  70 {
  71   test03();
  72   test04();
  73   return 0;
  74 }