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

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do run { target c++17 } }
   3
   4 // Copyright (C) 2016-2021 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 // [string.modifiers]
  22
  23 #include <string>
  24 #include <testsuite_hooks.h>
  25
  26 void
  27 test03()
  28 {
  29   std::wstring_view str1(L"foo");
  30   std::wstring str2(L"bar");
  31   str2.replace(0, 3, str1);
  32   VERIFY (str2 == str1);
  33   str2 = L"foobar";
  34   str2.replace(3, 3, str1);
  35   VERIFY (str2 == L"foofoo");
  36   str2 = L"foobar";
  37   str2.replace(3, 3, str1, 0, 3);
  38   VERIFY (str2 == L"foofoo");
  39   str2 = L"foobar";
  40   str2.replace(3, 1024, str1, 0, 3);
  41   VERIFY (str2 == L"foofoo");
  42   str2 = L"foobar";
  43   str2.replace(3, 3, str1, 0, 1024);
  44   VERIFY (str2 == L"foofoo");
  45   str2 = L"foobar";
  46   str2.replace(str2.begin()+3, str2.begin()+6, str1);
  47   VERIFY (str2 == L"foofoo");
  48 }
  49
  50 // PR libstdc++/77264
  51 void
  52 test04()
  53 {
  54   std::wstring str(L"a");
  55
  56   wchar_t c = L'b';
  57   str.replace(0, 1, &c, 1);
  58   VERIFY (str[0] == c);
  59
  60   wchar_t arr[] = L"c";
  61   str.replace(0, 1, arr, 1);
  62   VERIFY (str[0] == arr[0]);
  63
  64   const wchar_t carr[] = L"d";
  65   str.replace(0, 1, carr, 1);
  66   VERIFY (str[0] == carr[0]);
  67
  68   struct S {
  69     operator wchar_t*() { return &c; }
  70     operator std::wstring_view() { return L"!"; }
  71     wchar_t c = L'e';
  72   };
  73
  74   str.replace(0, 1, S{}, 1);
  75   VERIFY (str[0] == S{}.c);
  76 }
  77
  78 int main()
  79 {
  80   test03();
  81   test04();
  82   return 0;
  83 }