setstate.pass.cpp revision f5256e16dfc425c1d466f6308d4026d529ce9e0b 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <ios>
11
12// template <class charT, class traits> class basic_ios
13
14// void setstate(iostate state);
15
16#include <ios>
17#include <streambuf>
18#include <cassert>
19
20struct testbuf : public std::streambuf {};
21
22int main()
23{
24    {
25        std::ios ios(0);
26        ios.setstate(std::ios::goodbit);
27        assert(ios.rdstate() == std::ios::badbit);
28        try
29        {
30            ios.exceptions(std::ios::badbit);
31        }
32        catch (...)
33        {
34        }
35        try
36        {
37            ios.setstate(std::ios::goodbit);
38            assert(false);
39        }
40        catch (std::ios::failure&)
41        {
42            assert(ios.rdstate() == std::ios::badbit);
43        }
44        try
45        {
46            ios.setstate(std::ios::eofbit);
47            assert(false);
48        }
49        catch (std::ios::failure&)
50        {
51            assert(ios.rdstate() == (std::ios::eofbit | std::ios::badbit));
52        }
53    }
54    {
55        testbuf sb;
56        std::ios ios(&sb);
57        ios.setstate(std::ios::goodbit);
58        assert(ios.rdstate() == std::ios::goodbit);
59        ios.setstate(std::ios::eofbit);
60        assert(ios.rdstate() == std::ios::eofbit);
61        ios.setstate(std::ios::failbit);
62        assert(ios.rdstate() == (std::ios::eofbit | std::ios::failbit));
63    }
64}
65