overflow.pass.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976 
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// <strstream>
11
12// class strstreambuf
13
14// int_type overflow(int_type c = EOF);
15
16#include <strstream>
17#include <cassert>
18
19int main()
20{
21    {
22        char buf[12] = "abc";
23        std::strstreambuf sb(buf, sizeof(buf), buf);
24        assert(sb.sputc('1') == '1');
25        assert(sb.str() == std::string("1bc"));
26        assert(sb.sputc('2') == '2');
27        assert(sb.str() == std::string("12c"));
28        assert(sb.sputc('3') == '3');
29        assert(sb.str() == std::string("123"));
30        assert(sb.sputc('4') == '4');
31        assert(sb.str() == std::string("1234"));
32        assert(sb.sputc('5') == '5');
33        assert(sb.str() == std::string("12345"));
34        assert(sb.sputc('6') == '6');
35        assert(sb.str() == std::string("123456"));
36        assert(sb.sputc('7') == '7');
37        assert(sb.str() == std::string("1234567"));
38        assert(sb.sputc('8') == '8');
39        assert(sb.str() == std::string("12345678"));
40        assert(sb.sputc('9') == '9');
41        assert(sb.str() == std::string("123456789"));
42        assert(sb.sputc('0') == '0');
43        assert(sb.str() == std::string("1234567890"));
44        assert(sb.sputc('1') == '1');
45        assert(sb.str() == std::string("12345678901"));
46    }
47}
48