libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/07.cc

   1 // Copyright (C) 2004-2018 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // 27.6.1.2.2 arithmetic extractors
  19
  20 #include <istream>
  21 #include <sstream>
  22 #include <locale>
  23 #include <testsuite_hooks.h>
  24
  25 namespace std {
  26   class test_numpunct1 : public numpunct<wchar_t>
  27   {
  28   protected:
  29     string
  30     do_grouping() const
  31     { return string(1, '\003'); }
  32   };
  33 } // namespace std
  34
  35 void test07()
  36 {
  37   // manufactured locale, grouping is turned on
  38   unsigned int h4 = 0, h3 = 0, h2 = 0;
  39   float f1 = 0.0;
  40   const std::wstring s1(L"205,199 23,445.25 1,024,365 123,22,24");
  41   std::wistringstream is(s1);
  42   is.imbue(std::locale(std::locale(), new std::test_numpunct1));
  43
  44   // Basic operation.
  45   is >> h4;
  46   VERIFY( h4 == 205199 );
  47   VERIFY( is.good() );
  48
  49   is.clear();
  50   is >> f1;
  51   VERIFY( f1 == 23445.25 );
  52   VERIFY( is.good() );
  53
  54   is.clear();
  55   is >> h3;
  56   VERIFY( h3 == 1024365 );
  57   VERIFY( is.good() );
  58
  59   is.clear();
  60   is >> h2;
  61   VERIFY( h2 == 1232224 );
  62   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
  63   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
  64
  65   // Stress tests for explicit errors in grouping corner cases.  The
  66   // validity of these tests and results have been hammered out in
  67   // private email between bkoz and ncm between Jan 25 and Jan 27, 2000.
  68   // Thanks nate -- benjamin
  69   const std::wstring s2(L",111 4,,4 0.25,345 5..25 156,, 1,000000 1000000 1234,567");
  70   h3 = h4 = h2 = 0;
  71   f1 = 0.0;
  72   const wchar_t c_control = L'?';
  73   wchar_t c = c_control;
  74   is.clear();
  75   is.str(s2);
  76
  77   is >> h4;
  78   VERIFY( h4 == 0 );
  79   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
  80   is.clear();
  81   is >> c;
  82   VERIFY( c == L',' );
  83   VERIFY( is.good() );
  84
  85   is.ignore(3);
  86   is >> f1;
  87   VERIFY( f1 == 0.0 );
  88   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
  89   is.clear();
  90   is >> c;
  91   VERIFY( c == L',' );
  92   is >> c;
  93   VERIFY( c == L'4' );
  94   VERIFY( is.good() );
  95
  96   is >> f1;
  97   VERIFY( f1 == 0.25 );
  98   VERIFY( is.good() );
  99   is >> c;
 100   VERIFY( c == L',' );
 101   is >> h2;
 102   VERIFY( h2 == 345 );
 103   VERIFY( is.good() );
 104   f1 = 0.0;
 105   h2 = 0;
 106
 107   is >> f1;
 108   VERIFY( f1 == 5.0 );
 109   VERIFY( is.good() );
 110   is >> f1;
 111   VERIFY( f1 == .25 );
 112   VERIFY( is.good() );
 113
 114   is >> h3;
 115   VERIFY( h3 == 0 );
 116   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
 117   is.clear();
 118   is >> c;
 119   VERIFY( c == L',' ); // second one
 120   VERIFY( is.good() );
 121
 122   is >> h2;
 123   VERIFY( h2 == 1000000 );
 124   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
 125   h2 = 0;
 126   is.clear();
 127
 128   is >> h2;
 129   VERIFY( h2 == 1000000 );
 130   VERIFY( is.good() );
 131   h2 = 0;
 132
 133   is >> h2;
 134   VERIFY( h2 == 1234567 );
 135   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
 136   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
 137   is.clear();
 138 }
 139
 140 int main()
 141 {
 142   test07();
 143   return 0;
 144 }