54 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_ostringstream13 14// void swap(basic_ostringstream& rhs);15 16#include <sstream>17#include <cassert>18 19#include "test_macros.h"20 21int main(int, char**)22{23 {24 std::ostringstream ss0(" 123 456");25 std::ostringstream ss;26 ss.swap(ss0);27 assert(ss.rdbuf() != 0);28 assert(ss.good());29 assert(ss.str() == " 123 456");30 int i = 234;31 ss << i << ' ' << 567;32 assert(ss.str() == "234 5676");33 ss0 << i << ' ' << 567;34 assert(ss0.str() == "234 567");35 }36#ifndef TEST_HAS_NO_WIDE_CHARACTERS37 {38 std::wostringstream ss0(L" 123 456");39 std::wostringstream ss;40 ss.swap(ss0);41 assert(ss.rdbuf() != 0);42 assert(ss.good());43 assert(ss.str() == L" 123 456");44 int i = 234;45 ss << i << ' ' << 567;46 assert(ss.str() == L"234 5676");47 ss0 << i << ' ' << 567;48 assert(ss0.str() == L"234 567");49 }50#endif51 52 return 0;53}54