1// Copyright (C) 2014-2015 Free Software Foundation, Inc. 2// 3// This file is part of the GNU ISO C++ Library. This library is free 4// software; you can redistribute it and/or modify it under the 5// terms of the GNU General Public License as published by the 6// Free Software Foundation; either version 3, or (at your option) 7// any later version. 8 9// This library is distributed in the hope that it will be useful, 10// but WITHOUT ANY WARRANTY; without even the implied warranty of 11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12// GNU General Public License for more details. 13 14// You should have received a copy of the GNU General Public License along 15// with this library; see the file COPYING3. If not see 16// <http://www.gnu.org/licenses/>. 17 18// { dg-options "-std=gnu++11" } 19// { dg-require-fileio "" } 20 21// 27.9.1.16 Assign and swap [fstream.assign] 22 23#include <fstream> 24#include <string> 25#include <testsuite_hooks.h> 26 27using namespace std; 28 29string const name = "fstream-assign.txt"; 30 31void 32test01() 33{ 34 string orig = "Let the whole outside world consist of a long paper tape."; 35 { 36 fstream f(name, ios::in|ios::out|ios::trunc); 37 VERIFY( f.is_open() ); 38 f << orig; 39 fstream f1; 40 f1 = std::move(f); 41 VERIFY( f1.is_open() ); 42 VERIFY( !f.is_open() ); 43 f1.seekg(0); 44 string result; 45 getline(f1, result); 46 VERIFY( result == orig ); 47 } 48 { 49 fstream f(name, ios::in); 50 VERIFY( f.is_open() ); 51 fstream f1; 52 f1.swap(f); 53 VERIFY( f1.is_open() ); 54 VERIFY( !f.is_open() ); 55 string result; 56 getline(f1, result); 57 VERIFY( result == orig ); 58 } 59 { 60 fstream f(name, ios::in); 61 VERIFY( f.is_open() ); 62 fstream f1; 63 swap(f1, f); 64 VERIFY( f1.is_open() ); 65 VERIFY( !f.is_open() ); 66 string result; 67 getline(f1, result); 68 VERIFY( result == orig ); 69 } 70} 71 72void 73test02() 74{ 75#ifdef _GLIBCXX_USE_WCHAR_T 76 wfstream f, f2; 77 f2 = std::move(f); 78 f2.swap(f); 79 swap(f2, f); 80#endif 81} 82 83int 84main() 85{ 86 test01(); 87 test02(); 88} 89