1 //===----------------------------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
12 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
13 // class basic_stringbuf
15 // int_type overflow(int_type c = traits::eof());
20 int overflow_called = 0;
22 template <class CharT>
24 : public std::basic_stringbuf<CharT>
26 typedef std::basic_stringbuf<CharT> base;
27 explicit testbuf(const std::basic_string<CharT>& str,
28 std::ios_base::openmode which = std::ios_base::in | std::ios_base::out)
31 typename base::int_type
32 overflow(typename base::int_type c = base::traits_type::eof())
33 {++overflow_called; return base::overflow(c);}
35 void pbump(int n) {base::pbump(n);}
45 testbuf<char> sb("abc");
46 assert(sb.sputc('1') == '1');
47 assert(sb.str() == "1bc");
48 assert(sb.sputc('2') == '2');
49 assert(sb.str() == "12c");
50 assert(sb.sputc('3') == '3');
51 assert(sb.str() == "123");
52 assert(sb.sputc('4') == '4');
53 assert(sb.str() == "1234");
54 assert(sb.sputc('5') == '5');
55 assert(sb.str() == "12345");
56 assert(sb.sputc('6') == '6');
57 assert(sb.str() == "123456");
58 assert(sb.sputc('7') == '7');
59 assert(sb.str() == "1234567");
60 assert(sb.sputc('8') == '8');
61 assert(sb.str() == "12345678");
62 assert(sb.sputc('9') == '9');
63 assert(sb.str() == "123456789");
64 assert(sb.sputc('0') == '0');
65 assert(sb.str() == "1234567890");
66 assert(sb.sputc('1') == '1');
67 assert(sb.str() == "12345678901");
70 testbuf<wchar_t> sb(L"abc");
71 assert(sb.sputc(L'1') == L'1');
72 assert(sb.str() == L"1bc");
73 assert(sb.sputc(L'2') == L'2');
74 assert(sb.str() == L"12c");
75 assert(sb.sputc(L'3') == L'3');
76 assert(sb.str() == L"123");
77 assert(sb.sputc(L'4') == L'4');
78 assert(sb.str() == L"1234");
79 assert(sb.sputc(L'5') == L'5');
80 assert(sb.str() == L"12345");
81 assert(sb.sputc(L'6') == L'6');
82 assert(sb.str() == L"123456");
83 assert(sb.sputc(L'7') == L'7');
84 assert(sb.str() == L"1234567");
85 assert(sb.sputc(L'8') == L'8');
86 assert(sb.str() == L"12345678");
87 assert(sb.sputc(L'9') == L'9');
88 assert(sb.str() == L"123456789");
89 assert(sb.sputc(L'0') == L'0');
90 assert(sb.str() == L"1234567890");
91 assert(sb.sputc(L'1') == L'1');
92 assert(sb.str() == L"12345678901");
95 testbuf<char> sb("abc", std::ios_base::app | std::ios_base::out);
96 assert(sb.sputc('1') == '1');
97 assert(sb.str() == "abc1");
98 assert(sb.sputc('2') == '2');
99 assert(sb.str() == "abc12");