equal.pass.cpp revision a90c6dd46005b2b14de3bb889a8d03bb34bd3256 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <iterator>
11
12// class istream_iterator
13
14// template <class T, class charT, class traits, class Distance>
15//   bool operator==(const istream_iterator<T,charT,traits,Distance> &x,
16//                   const istream_iterator<T,charT,traits,Distance> &y);
17//
18// template <class T, class charT, class traits, class Distance>
19//   bool operator!=(const istream_iterator<T,charT,traits,Distance> &x,
20//                   const istream_iterator<T,charT,traits,Distance> &y);
21
22#include <iterator>
23#include <sstream>
24#include <cassert>
25
26int main()
27{
28    std::istringstream inf1(" 1 23");
29    std::istringstream inf2(" 1 23");
30    std::istream_iterator<int> i1(inf1);
31    std::istream_iterator<int> i2(inf1);
32    std::istream_iterator<int> i3(inf2);
33    std::istream_iterator<int> i4;
34    std::istream_iterator<int> i5;
35    assert(i1 == i1);
36    assert(i1 == i2);
37    assert(i1 != i3);
38    assert(i1 != i4);
39    assert(i1 != i5);
40
41    assert(i2 == i2);
42    assert(i2 != i3);
43    assert(i2 != i4);
44    assert(i2 != i5);
45
46    assert(i3 == i3);
47    assert(i3 != i4);
48    assert(i3 != i5);
49
50    assert(i4 == i4);
51    assert(i4 == i5);
52}
53