libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/default.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 // REQUIRES: locale.en_US.UTF-8
  10
  11 // <streambuf>
  12
  13 // template <class charT, class traits = char_traits<charT> >
  14 // class basic_streambuf;
  15
  16 // basic_streambuf();
  17
  18 #include <streambuf>
  19 #include <cassert>
  20
  21 #include "test_macros.h"
  22 #include "platform_support.h" // locale name macros
  23
  24 template <class CharT>
  25 struct test
  26     : public std::basic_streambuf<CharT>
  27 {
  28     test()
  29     {
  30         assert(this->eback() == 0);
  31         assert(this->gptr() == 0);
  32         assert(this->egptr() == 0);
  33         assert(this->pbase() == 0);
  34         assert(this->pptr() == 0);
  35         assert(this->epptr() == 0);
  36     }
  37 };
  38
  39 int main(int, char**)
  40 {
  41     {
  42         test<char> t;
  43         assert(t.getloc().name() == "C");
  44     }
  45 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  46     {
  47         test<wchar_t> t;
  48         assert(t.getloc().name() == "C");
  49     }
  50 #endif
  51
  52     std::locale::global(std::locale(LOCALE_en_US_UTF_8));
  53     {
  54         test<char> t;
  55         assert(t.getloc().name() == LOCALE_en_US_UTF_8);
  56     }
  57 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  58     {
  59         test<wchar_t> t;
  60         assert(t.getloc().name() == LOCALE_en_US_UTF_8);
  61     }
  62 #endif
  63
  64   return 0;
  65 }