libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_max_length.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 // <codecvt>
  10
  11 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
  12
  13 // template <class Elem, unsigned long Maxcode = 0x10ffff,
  14 //           codecvt_mode Mode = (codecvt_mode)0>
  15 // class codecvt_utf8_utf16
  16 //     : public codecvt<Elem, char, mbstate_t>
  17 // {
  18 //     // unspecified
  19 // };
  20
  21 // int max_length() const throw();
  22
  23 #include <codecvt>
  24 #include <cassert>
  25
  26 #include "test_macros.h"
  27
  28 int main(int, char**)
  29 {
  30 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  31     {
  32         typedef std::codecvt_utf8_utf16<wchar_t> C;
  33         C c;
  34         int r = c.max_length();
  35         assert(r == 4);
  36     }
  37     {
  38         typedef std::codecvt_utf8_utf16<wchar_t, 0xFFFFFFFF, std::consume_header> C;
  39         C c;
  40         int r = c.max_length();
  41         assert(r == 7);
  42     }
  43 #endif // TEST_HAS_NO_WIDE_CHARACTERS
  44     {
  45         typedef std::codecvt_utf8_utf16<char16_t> C;
  46         C c;
  47         int r = c.max_length();
  48         assert(r == 4);
  49     }
  50     {
  51         typedef std::codecvt_utf8_utf16<char16_t, 0xFFFFFFFF, std::consume_header> C;
  52         C c;
  53         int r = c.max_length();
  54         assert(r == 7);
  55     }
  56     {
  57         typedef std::codecvt_utf8_utf16<char32_t> C;
  58         C c;
  59         int r = c.max_length();
  60         assert(r == 4);
  61     }
  62     {
  63         typedef std::codecvt_utf8_utf16<char32_t, 0xFFFFFFFF, std::consume_header> C;
  64         C c;
  65         int r = c.max_length();
  66         assert(r == 7);
  67     }
  68
  69   return 0;
  70 }