libstdc++-v3/testsuite/27_io/basic_stringbuf/cons/char/1.cc

   1 // 2004-09-29  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2004-2022 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // C++03 27.7.1.1  basic_stringbuf constructors  [lib.stringbuf.cons]
  21
  22 #include <sstream>
  23 #include <testsuite_hooks.h>
  24 #include <testsuite_io.h>
  25
  26 // http://gcc.gnu.org/ml/libstdc++/2004-09/msg00243.html
  27 void test01()
  28 {
  29   __gnu_test::constraint_stringbuf sbuf;
  30   VERIFY( sbuf.check_pointers() );
  31 }
  32
  33 void test02()
  34 {
  35   std::stringbuf sbuf;
  36   VERIFY( sbuf.str().empty() );
  37
  38   std::stringbuf sbuf1(std::ios::in);
  39   VERIFY( sbuf1.str().empty() );
  40
  41   const std::string str = "This is my boomstick!";
  42
  43   std::stringbuf sbuf2(str);
  44   VERIFY( sbuf2.str() == str );
  45
  46   std::stringbuf sbuf3(str, std::ios::in);
  47   VERIFY( sbuf3.str() == str );
  48   VERIFY( sbuf3.sgetc() == str[0] );
  49   VERIFY( sbuf3.sputc('X') == std::stringbuf::traits_type::eof() );
  50
  51   std::stringbuf sbuf4(str, std::ios::out);
  52   VERIFY( sbuf4.str() == str );
  53   VERIFY( sbuf4.sputc('Y') == 'Y' );
  54   VERIFY( sbuf4.sgetc() == std::stringbuf::traits_type::eof() );
  55
  56 #if __cplusplus >= 201103L
  57   static_assert( ! std::is_convertible<std::ios::openmode, std::stringbuf>(),
  58                   "stringbuf(ios::openmode) is explicit");
  59
  60   static_assert( ! std::is_convertible<const std::string&, std::stringbuf>(),
  61                   "stringbuf(string, ios::openmode) is explicit");
  62 #endif
  63 }
  64
  65 int main()
  66 {
  67   test01();
  68   test02();
  69   return 0;
  70 }