test/std/input.output/iostreams.base/ios/iostate.flags/exceptions_iostate.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 // <ios>
  11
  12 // template <class charT, class traits> class basic_ios
  13
  14 // iostate exceptions() const;
  15
  16 #include <ios>
  17 #include <streambuf>
  18 #include <cassert>
  19
  20 #include "test_macros.h"
  21
  22 struct testbuf : public std::streambuf {};
  23
  24 int main()
  25 {
  26     {
  27         std::ios ios(0);
  28         assert(ios.exceptions() == std::ios::goodbit);
  29         ios.exceptions(std::ios::eofbit);
  30         assert(ios.exceptions() == std::ios::eofbit);
  31 #ifndef TEST_HAS_NO_EXCEPTIONS
  32         try
  33         {
  34             ios.exceptions(std::ios::badbit);
  35             assert(false);
  36         }
  37         catch (std::ios::failure&)
  38         {
  39         }
  40         assert(ios.exceptions() == std::ios::badbit);
  41 #endif
  42     }
  43     {
  44         testbuf sb;
  45         std::ios ios(&sb);
  46         assert(ios.exceptions() == std::ios::goodbit);
  47         ios.exceptions(std::ios::eofbit);
  48         assert(ios.exceptions() == std::ios::eofbit);
  49         ios.exceptions(std::ios::badbit);
  50         assert(ios.exceptions() == std::ios::badbit);
  51     }
  52 }