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 // FILE_DEPENDENCIES: test.dat, test2.dat 10 11 // <fstream> 12 13 // template <class charT, class traits = char_traits<charT> > 14 // class basic_ifstream 15 16 // void swap(basic_ifstream& rhs); 17 18 #include <fstream> 19 #include <cassert> 20 21 #include "test_macros.h" 22 main(int,char **)23int main(int, char**) 24 { 25 { 26 std::ifstream fs1("test.dat"); 27 std::ifstream fs2("test2.dat"); 28 fs1.swap(fs2); 29 double x = 0; 30 fs1 >> x; 31 assert(x == 4.5); 32 fs2 >> x; 33 assert(x == 3.25); 34 } 35 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 36 { 37 std::wifstream fs1("test.dat"); 38 std::wifstream fs2("test2.dat"); 39 fs1.swap(fs2); 40 double x = 0; 41 fs1 >> x; 42 assert(x == 4.5); 43 fs2 >> x; 44 assert(x == 3.25); 45 } 46 #endif 47 48 return 0; 49 } 50