libstdc++-v3/testsuite/21_strings/basic_string/cons/wchar_t/8.cc

   1 // Copyright (C) 2016 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 <string>
  21 #include <testsuite_hooks.h>
  22
  23 template<typename... Args>
  24 std::size_t
  25 construct(Args&&... args)
  26 {
  27   return std::wstring( std::forward<Args>(args)... ).length();
  28 }
  29
  30 void
  31 test01()
  32 {
  33   bool test __attribute__((unused)) = true;
  34
  35   using string = std::wstring;
  36   using list = std::initializer_list<string::value_type>;
  37
  38   const std::wstring lvalue = L"lvalue";
  39   std::allocator<char> alloc;
  40
  41   // test all valid combinations of arguments:
  42   VERIFY( construct( ) == 0 );
  43   VERIFY( construct( alloc ) == 0 );
  44   VERIFY( construct( lvalue ) == 6 );
  45   VERIFY( construct( string{L"rvalue"} ) == 6 );
  46   VERIFY( construct( lvalue, 2 ) == 4 );
  47   VERIFY( construct( lvalue, 2, alloc ) == 4 );
  48   VERIFY( construct( lvalue, 2, 3 ) == 3 );
  49   VERIFY( construct( lvalue, 2, 3, alloc ) == 3 );
  50   VERIFY( construct( L"C string", 4 ) == 4 );
  51   VERIFY( construct( L"C string", 4, alloc ) == 4 );
  52   VERIFY( construct( L"C string" ) == 8 );
  53   VERIFY( construct( L"C string and alloc", alloc ) == 18 );
  54   VERIFY( construct( 5, L' ' ) == 5 );
  55   VERIFY( construct( 5, L' ', alloc ) == 5 );
  56   VERIFY( construct( lvalue.begin(), lvalue.end() ) == 6 );
  57   VERIFY( construct( lvalue.begin(), lvalue.end(), alloc ) == 6 );
  58   VERIFY( construct( list{ L'l' , L'i' , L's', L't' } ) == 4 );
  59   VERIFY( construct( list{ L'l', L'i', L's', L't' }, alloc ) == 4 );
  60 #if _GLIBCXX_USE_CXX11_ABI
  61   VERIFY( construct( lvalue, alloc ) == 6 );
  62   VERIFY( construct( string{L"rvalue"}, alloc ) == 6 );
  63 #endif
  64 }
  65
  66 int
  67 main()
  68 {
  69   test01();
  70 }