62 lines · 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-exception6//7//===----------------------------------------------------------------------===//8 9// <sstream>10 11// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >12// class basic_istringstream13 14// void swap(basic_istringstream& rhs);15 16#include <sstream>17#include <cassert>18 19#include "test_macros.h"20 21int main(int, char**)22{23 {24 std::istringstream ss0(" 123 456");25 std::istringstream ss(" 789 321");26 ss.swap(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 ss0 >> i;36 assert(i == 789);37 ss0 >> i;38 assert(i == 321);39 }40#ifndef TEST_HAS_NO_WIDE_CHARACTERS41 {42 std::wistringstream ss0(L" 123 456");43 std::wistringstream ss(L" 789 321");44 ss.swap(ss0);45 assert(ss.rdbuf() != 0);46 assert(ss.good());47 assert(ss.str() == L" 123 456");48 int i = 0;49 ss >> i;50 assert(i == 123);51 ss >> i;52 assert(i == 456);53 ss0 >> i;54 assert(i == 789);55 ss0 >> i;56 assert(i == 321);57 }58#endif59 60 return 0;61}62