libstdc++-v3/testsuite/22_locale/codecvt/codecvt_utf8/79980.cc

   1 // Copyright (C) 2017-2020 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run { target c++11 } }
  19
  20 #include <codecvt>
  21 #include <locale>
  22 #include <string>
  23 #include <testsuite_hooks.h>
  24
  25 using std::wstring_convert;
  26 using std::codecvt_utf8;
  27
  28 void
  29 test01()
  30 {
  31   std::string src = (const char*)u8"1234\U00001111\U0001ffff";
  32   wstring_convert<codecvt_utf8<char16_t>, char16_t> c("bad", u"BAD");
  33
  34   // utf-8 to ucs2 conversion should fail on character outside BMP
  35   auto ucs2 = c.from_bytes(src);
  36   VERIFY( ucs2 == u"BAD" );
  37   VERIFY( c.converted() == 7 );
  38
  39   // ucs2 to utf-8 conversion should fail on invalid ucs2 input:
  40   std::u16string utf16 = u"1234\U00001111\U0001ffff";
  41   auto out = c.to_bytes(utf16);
  42   VERIFY( out == "bad" );
  43   VERIFY( c.converted() == 5 );
  44
  45   // And should also fail on incomplete surrogate pair (not return partial):
  46   out = c.to_bytes(utf16.substr(0, utf16.size()-1));
  47   VERIFY( out == "bad" );
  48   VERIFY( c.converted() == 5 );
  49 }
  50
  51 void
  52 test02()
  53 {
  54   std::string src = (const char*)u8"1234\U00001111\U0001ffff";
  55   wstring_convert<codecvt_utf8<char16_t, 0x1000>, char16_t> c("bad", u"BAD");
  56
  57   // utf-8 to ucs2 conversion should fail on character above Maxcode=0x1000
  58   auto ucs2 = c.from_bytes(src);
  59   VERIFY( ucs2 == u"BAD" );
  60   VERIFY( c.converted() == 4 );
  61 }
  62
  63 void
  64 test03()
  65 {
  66   std::string src = (const char*)u8"1234\U00001111\U0001ffff";
  67   wstring_convert<codecvt_utf8<char32_t, 0x10000>, char32_t> c("bad", U"BAD");
  68
  69   // utf-8 to ucs4 conversion should fail on character above Maxcode=0x10000
  70   auto ucs4 = c.from_bytes(src);
  71   VERIFY( ucs4 == U"BAD" );
  72   VERIFY( c.converted() == 7 );
  73 }
  74
  75 void
  76 test04()
  77 {
  78   std::string src = (const char*)u8"1234\U00001111\U0001ffff";
  79   wstring_convert<codecvt_utf8<char32_t, 0x1000>, char32_t> c("bad", U"BAD");
  80
  81   // utf-8 to ucs4 conversion should fail on character above Maxcode=0x1000
  82   auto ucs4 = c.from_bytes(src);
  83   VERIFY( ucs4 == U"BAD" );
  84   VERIFY( c.converted() == 4 );
  85 }
  86
  87 int
  88 main()
  89 {
  90   test01();
  91   test02();
  92   test03();
  93   test04();
  94 }