libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/converted.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 // size_t converted() const;
  16
  17 // XFAIL: no-wide-characters
  18
  19 #include <locale>
  20 #include <codecvt>
  21 #include <cassert>
  22
  23 #include "test_macros.h"
  24
  25 template <class CharT, std::size_t = sizeof(CharT)>
  26 struct TestHelper;
  27 template <class CharT>
  28 struct TestHelper<CharT, 2> {
  29   static void test();
  30 };
  31 template <class CharT>
  32 struct TestHelper<CharT, 4> {
  33   static void test();
  34 };
  35
  36 template <class CharT>
  37 void TestHelper<CharT, 2>::test() {
  38   static_assert((std::is_same<CharT, wchar_t>::value), "");
  39   {
  40     typedef std::codecvt_utf8<CharT> Codecvt;
  41     typedef std::wstring_convert<Codecvt> Myconv;
  42     Myconv myconv;
  43     assert(myconv.converted() == 0);
  44     std::string bs = myconv.to_bytes(L"\u1005");
  45     assert(myconv.converted() == 1);
  46     bs = myconv.to_bytes(L"\u1005e");
  47     assert(myconv.converted() == 2);
  48     std::wstring ws = myconv.from_bytes("\xE1\x80\x85");
  49     assert(myconv.converted() == 3);
  50   }
  51 }
  52
  53 template <class CharT>
  54 void TestHelper<CharT, 4>::test() {
  55   static_assert((std::is_same<CharT, wchar_t>::value), "");
  56   {
  57     typedef std::codecvt_utf8<CharT> Codecvt;
  58     typedef std::wstring_convert<Codecvt> Myconv;
  59     Myconv myconv;
  60     assert(myconv.converted() == 0);
  61     std::string bs = myconv.to_bytes(L"\U00040003");
  62     assert(myconv.converted() == 1);
  63     bs = myconv.to_bytes(L"\U00040003e");
  64     assert(myconv.converted() == 2);
  65     std::wstring ws = myconv.from_bytes("\xF1\x80\x80\x83");
  66     assert(myconv.converted() == 4);
  67   }
  68 }
  69
  70 int main(int, char**) {
  71   TestHelper<wchar_t>::test();
  72   return 0;
  73 }