libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <locale>
  10
  11 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
  12
  13 // wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
  14
  15 // wstring_convert(Codecvt* pcvt = new Codecvt);          // before C++14
  16 // explicit wstring_convert(Codecvt* pcvt = new Codecvt); // before C++20
  17 // wstring_convert() : wstring_convert(new Codecvt) {}    // C++20
  18 // explicit wstring_convert(Codecvt* pcvt);               // C++20
  19
  20 // XFAIL: no-wide-characters
  21
  22 #include <locale>
  23 #include <codecvt>
  24 #include <cassert>
  25
  26 #include "test_macros.h"
  27 #if TEST_STD_VER >= 11
  28 #include "test_convertible.h"
  29 #endif
  30
  31 int main(int, char**)
  32 {
  33     {
  34         typedef std::codecvt_utf8<wchar_t> Codecvt;
  35         typedef std::wstring_convert<Codecvt> Myconv;
  36         Myconv myconv;
  37         assert(myconv.converted() == 0);
  38     }
  39     {
  40         typedef std::codecvt_utf8<wchar_t> Codecvt;
  41         typedef std::wstring_convert<Codecvt> Myconv;
  42         Myconv myconv(new Codecvt);
  43         assert(myconv.converted() == 0);
  44 #if TEST_STD_VER > 11
  45         static_assert(!std::is_convertible<Codecvt*, Myconv>::value, "");
  46         static_assert( std::is_constructible<Myconv, Codecvt*>::value, "");
  47 #endif
  48     }
  49
  50 #if TEST_STD_VER >= 11
  51     {
  52       typedef std::codecvt_utf8<wchar_t> Codecvt;
  53       typedef std::wstring_convert<Codecvt> B;
  54       static_assert(test_convertible<B>(), "");
  55       static_assert(!test_convertible<B, Codecvt*>(), "");
  56     }
  57 #endif
  58
  59     return 0;
  60 }