libcxx/test/std/input.output/string.streams/istringstream/istringstream.members/str.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 // <sstream>
  10
  11 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
  12 // class basic_istringstream
  13
  14 // void str(const basic_string<charT,traits,Allocator>& s);
  15
  16 #include <sstream>
  17 #include <cassert>
  18
  19 #include "test_macros.h"
  20
  21 int main(int, char**)
  22 {
  23     {
  24         std::istringstream ss(" 123 456");
  25         assert(ss.rdbuf() != 0);
  26         assert(ss.good());
  27         assert(ss.str() == " 123 456");
  28         int i = 0;
  29         ss >> i;
  30         assert(i == 123);
  31         ss >> i;
  32         assert(i == 456);
  33         ss.str(" 789");
  34         ss.clear();
  35         assert(ss.good());
  36         assert(ss.str() == " 789");
  37         ss >> i;
  38         assert(i == 789);
  39     }
  40     {
  41         std::wistringstream ss(L" 123 456");
  42         assert(ss.rdbuf() != 0);
  43         assert(ss.good());
  44         assert(ss.str() == L" 123 456");
  45         int i = 0;
  46         ss >> i;
  47         assert(i == 123);
  48         ss >> i;
  49         assert(i == 456);
  50         ss.str(L" 789");
  51         ss.clear();
  52         assert(ss.good());
  53         assert(ss.str() == L" 789");
  54         ss >> i;
  55         assert(i == 789);
  56     }
  57
  58   return 0;
  59 }