xref: /aosp_15_r20/external/libcxx/test/std/input.output/iostream.format/std.manip/setbase.pass.cpp (revision 58b9f456b02922dfdb1fad8a988d5fd8765ecb80) 
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 // <iomanip>
11 
12 // T3 setbase(int base);
13 
14 #include <iomanip>
15 #include <istream>
16 #include <ostream>
17 #include <cassert>
18 
19 template <class CharT>
20 struct testbuf
21     : public std::basic_streambuf<CharT>
22 {
testbuftestbuf23     testbuf() {}
24 };
25 
main()26 int main()
27 {
28     {
29         testbuf<char> sb;
30         std::istream is(&sb);
31         is >> std::setbase(8);
32         assert((is.flags() & std::ios_base::basefield) == std::ios_base::oct);
33         is >> std::setbase(10);
34         assert((is.flags() & std::ios_base::basefield) == std::ios_base::dec);
35         is >> std::setbase(16);
36         assert((is.flags() & std::ios_base::basefield) == std::ios_base::hex);
37         is >> std::setbase(15);
38         assert((is.flags() & std::ios_base::basefield) == 0);
39     }
40     {
41         testbuf<char> sb;
42         std::ostream os(&sb);
43         os << std::setbase(8);
44         assert((os.flags() & std::ios_base::basefield) == std::ios_base::oct);
45         os << std::setbase(10);
46         assert((os.flags() & std::ios_base::basefield) == std::ios_base::dec);
47         os << std::setbase(16);
48         assert((os.flags() & std::ios_base::basefield) == std::ios_base::hex);
49         os << std::setbase(15);
50         assert((os.flags() & std::ios_base::basefield) == 0);
51     }
52     {
53         testbuf<wchar_t> sb;
54         std::wistream is(&sb);
55         is >> std::setbase(8);
56         assert((is.flags() & std::ios_base::basefield) == std::ios_base::oct);
57         is >> std::setbase(10);
58         assert((is.flags() & std::ios_base::basefield) == std::ios_base::dec);
59         is >> std::setbase(16);
60         assert((is.flags() & std::ios_base::basefield) == std::ios_base::hex);
61         is >> std::setbase(15);
62         assert((is.flags() & std::ios_base::basefield) == 0);
63     }
64     {
65         testbuf<wchar_t> sb;
66         std::wostream os(&sb);
67         os << std::setbase(8);
68         assert((os.flags() & std::ios_base::basefield) == std::ios_base::oct);
69         os << std::setbase(10);
70         assert((os.flags() & std::ios_base::basefield) == std::ios_base::dec);
71         os << std::setbase(16);
72         assert((os.flags() & std::ios_base::basefield) == std::ios_base::hex);
73         os << std::setbase(15);
74         assert((os.flags() & std::ios_base::basefield) == 0);
75     }
76 }
77