79 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// <istream>10 11// template <class charT, class traits = char_traits<charT> >12// class basic_istream;13 14// basic_istream(basic_istream&& rhs);15 16#include <istream>17#include <cassert>18#include <streambuf>19 20#include "test_macros.h"21 22template <class CharT>23struct testbuf24 : public std::basic_streambuf<CharT>25{26 testbuf() {}27};28 29template <class CharT>30struct test_istream31 : public std::basic_istream<CharT>32{33 typedef std::basic_istream<CharT> base;34 test_istream(testbuf<CharT>* sb) : base(sb) {}35 36 test_istream(test_istream&& s)37 : base(std::move(s)) {}38};39 40int main(int, char**)41{42 {43 testbuf<char> sb;44 test_istream<char> is1(&sb);45 test_istream<char> is(std::move(is1));46 assert(is1.rdbuf() == &sb);47 assert(is1.gcount() == 0);48 assert(is.gcount() == 0);49 assert(is.rdbuf() == 0);50 assert(is.tie() == 0);51 assert(is.fill() == ' ');52 assert(is.rdstate() == is.goodbit);53 assert(is.exceptions() == is.goodbit);54 assert(is.flags() == (is.skipws | is.dec));55 assert(is.precision() == 6);56 assert(is.getloc().name() == "C");57 }58#ifndef TEST_HAS_NO_WIDE_CHARACTERS59 {60 testbuf<wchar_t> sb;61 test_istream<wchar_t> is1(&sb);62 test_istream<wchar_t> is(std::move(is1));63 assert(is1.gcount() == 0);64 assert(is.gcount() == 0);65 assert(is1.rdbuf() == &sb);66 assert(is.rdbuf() == 0);67 assert(is.tie() == 0);68 assert(is.fill() == L' ');69 assert(is.rdstate() == is.goodbit);70 assert(is.exceptions() == is.goodbit);71 assert(is.flags() == (is.skipws | is.dec));72 assert(is.precision() == 6);73 assert(is.getloc().name() == "C");74 }75#endif76 77 return 0;78}79