libstdc++-v3/testsuite/27_io/basic_istringstream/cons/move.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2014-2024 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 // 27.8.3.1 basic_istringstream constructors [istringstream.cons]
  21
  22 #include <sstream>
  23 #include <string>
  24 #include <testsuite_hooks.h>
  25
  26 void
  27 test01()
  28 {
  29   std::istringstream s1("absence of a signal");
  30   std::string s;
  31   s1 >> s;
  32
  33   std::istringstream s2 = std::move(s1);
  34   s2 >> s;
  35   VERIFY(s == "of");
  36
  37   std::istringstream s3;
  38   s3 = std::move(s2);
  39   s3 >> s;
  40   VERIFY(s == "a");
  41
  42   s1 = std::move(s3);
  43   s1 >> s;
  44   VERIFY(s == "signal");
  45
  46   s2.str("should never be used as a signal");
  47   s1 = std::move(s2);
  48   getline(s1, s);
  49   VERIFY(s == "should never be used as a signal");
  50   s3 = std::move(s1);
  51   VERIFY(s3.eof());
  52 }
  53
  54 void
  55 test02()
  56 {
  57   std::istringstream s0{ " 1234.5 " };
  58   std::istringstream s{ std::move(s0) };
  59   char c{};
  60   s >> c;
  61   VERIFY( c == '1' );
  62   int i{};
  63   s >> i;
  64   VERIFY( i == 234 );
  65   double d{};
  66   s >> d;
  67   VERIFY( d == .5 );
  68 }
  69
  70 void
  71 test03()
  72 {
  73 #ifdef _GLIBCXX_USE_WCHAR_T
  74   std::wistringstream s0{ L" 1234.5 " };
  75   std::wistringstream s{ std::move(s0) };
  76   wchar_t c{};
  77   s >> c;
  78   VERIFY( c == L'1' );
  79   int i{};
  80   s >> i;
  81   VERIFY( i == 234 );
  82   double d{};
  83   s >> d;
  84   VERIFY( d == .5 );
  85 #endif
  86 }
  87
  88 int
  89 main()
  90 {
  91   test01();
  92   test02();
  93   test03();
  94 }