libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_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 // template <class Elem, unsigned long Maxcode = 0x10ffff,
  12 //           codecvt_mode Mode = (codecvt_mode)0>
  13 // class codecvt_utf8
  14 //     : public codecvt<Elem, char, mbstate_t>
  15 // {
  16 //     // unspecified
  17 // };
  18
  19 // int max_length() const throw();
  20
  21 #include <codecvt>
  22 #include <cassert>
  23
  24 #include "test_macros.h"
  25
  26 int main(int, char**)
  27 {
  28     {
  29         typedef std::codecvt_utf8<wchar_t> C;
  30         C c;
  31         int r = c.max_length();
  32         assert(r == 4);
  33     }
  34     {
  35         typedef std::codecvt_utf8<wchar_t, 0xFFFFFFFF, std::consume_header> C;
  36         C c;
  37         int r = c.max_length();
  38         assert(r == 7);
  39     }
  40     {
  41         typedef std::codecvt_utf8<char16_t> C;
  42         C c;
  43         int r = c.max_length();
  44         assert(r == 3);
  45     }
  46     {
  47         typedef std::codecvt_utf8<char16_t, 0xFFFFFFFF, std::consume_header> C;
  48         C c;
  49         int r = c.max_length();
  50         assert(r == 6);
  51     }
  52     {
  53         typedef std::codecvt_utf8<char32_t> C;
  54         C c;
  55         int r = c.max_length();
  56         assert(r == 4);
  57     }
  58     {
  59         typedef std::codecvt_utf8<char32_t, 0xFFFFFFFF, std::consume_header> C;
  60         C c;
  61         int r = c.max_length();
  62         assert(r == 7);
  63     }
  64
  65   return 0;
  66 }