libcxx/test/std/input.output/string.streams/stringstream/stringstream.assign/move.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_stringstream
  13
  14 // basic_stringstream& operator=(basic_stringstream&& rhs);
  15
  16 #include <sstream>
  17 #include <cassert>
  18
  19 #include "test_macros.h"
  20
  21 int main(int, char**)
  22 {
  23     {
  24         std::stringstream ss0(" 123 456 ");
  25         std::stringstream ss;
  26         ss = std::move(ss0);
  27         assert(ss.rdbuf() != 0);
  28         assert(ss.good());
  29         assert(ss.str() == " 123 456 ");
  30         int i = 0;
  31         ss >> i;
  32         assert(i == 123);
  33         ss >> i;
  34         assert(i == 456);
  35         ss << i << ' ' << 123;
  36         assert(ss.str() == "456 1236 ");
  37     }
  38 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  39     {
  40         std::wstringstream ss0(L" 123 456 ");
  41         std::wstringstream ss;
  42         ss = std::move(ss0);
  43         assert(ss.rdbuf() != 0);
  44         assert(ss.good());
  45         assert(ss.str() == L" 123 456 ");
  46         int i = 0;
  47         ss >> i;
  48         assert(i == 123);
  49         ss >> i;
  50         assert(i == 456);
  51         ss << i << ' ' << 123;
  52         assert(ss.str() == L"456 1236 ");
  53     }
  54 #endif
  55
  56   return 0;
  57 }