1 // 2001-05-23 Benjamin Kosnik <bkoz@redhat.com>
2
3 // Copyright (C) 2001, 2002 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 2, or (at your option)
9 // any later version.
10
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING. If not, write to the Free
18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
19 // USA.
20
21 // 27.7.3.2 member functions (ostringstream_members)
22
23 #include <sstream>
24 #include <testsuite_hooks.h>
25
test01()26 void test01()
27 {
28 bool test = true;
29 std::ostringstream os01;
30 const std::string str00;
31 const std::string str01 = "123";
32 std::string str02;
33 const int i01 = 123;
34 int a,b;
35
36 std::ios_base::iostate state1, state2, statefail, stateeof;
37 statefail = std::ios_base::failbit;
38 stateeof = std::ios_base::eofbit;
39
40 // string str() const
41 str02 = os01.str();
42 VERIFY( str00 == str02 );
43
44 // void str(const basic_string&)
45 os01.str(str01);
46 str02 = os01.str();
47 VERIFY( str01 == str02 );
48
49 #ifdef DEBUG_ASSERT
50 assert(test);
51 #endif
52 }
53
54 void
redirect_buffer(std::ios & stream,std::streambuf * new_buf)55 redirect_buffer(std::ios& stream, std::streambuf* new_buf)
56 { stream.rdbuf(new_buf); }
57
58 std::streambuf*
active_buffer(std::ios & stream)59 active_buffer(std::ios& stream)
60 { return stream.rdbuf(); }
61
62 // libstdc++/2832
test02()63 void test02()
64 {
65 bool test = true;
66 const char* strlit01 = "fuck war";
67 const char* strlit02 = "two less cars abstract riot crew, critical mass/SF";
68 const std::string str00;
69 const std::string str01(strlit01);
70 std::string str02;
71 std::stringbuf sbuf(str01);
72 std::streambuf* pbasebuf0 = &sbuf;
73
74 std::ostringstream sstrm1;
75 VERIFY( sstrm1.str() == str00 );
76 // derived rdbuf() always returns original streambuf, even though
77 // it's no longer associated with the stream.
78 std::stringbuf* const buf1 = sstrm1.rdbuf();
79 // base rdbuf() returns the currently associated streambuf
80 std::streambuf* pbasebuf1 = active_buffer(sstrm1);
81 redirect_buffer(sstrm1, &sbuf);
82 std::stringbuf* const buf2 = sstrm1.rdbuf();
83 std::streambuf* pbasebuf2 = active_buffer(sstrm1);
84 VERIFY( buf1 == buf2 );
85 VERIFY( pbasebuf1 != pbasebuf2 );
86 VERIFY( pbasebuf2 == pbasebuf0 );
87
88 // derived rdbuf() returns the original buf, so str() doesn't change.
89 VERIFY( sstrm1.str() != str01 );
90 VERIFY( sstrm1.str() == str00 );
91 // however, casting the active streambuf to a stringbuf shows what's up:
92 std::stringbuf* psbuf = dynamic_cast<std::stringbuf*>(pbasebuf2);
93 str02 = psbuf->str();
94 VERIFY( str02 == str01 );
95
96 // How confusing and non-intuitive is this?
97 // These semantics are a joke, a serious defect, and incredibly lame.
98 }
99
100 // 03: sanity checks for strings, stringbufs
101 void
test03()102 test03()
103 {
104 bool test = false;
105
106 // Empty string sanity check.
107 std::string str01;
108 std::string::iterator __i_start = str01.begin();
109 std::string::iterator __i_end = str01.end();
110 std::string::size_type len = str01.size();
111 test = __i_start == __i_end;
112 VERIFY( len == 0 );
113
114 // Full string sanity check.
115 std::string str02("these golden days, i spend waiting for you:\n"
116 "Betty Carter on Verve with I'm Yours and You're Mine.");
117 __i_start = str02.begin();
118 __i_end = str02.end();
119 len = str02.size();
120 VERIFY( __i_start != __i_end );
121 VERIFY( len != 0 );
122
123 // Test an empty ostringstream for sanity.
124 std::ostringstream ostrstream0;
125 std::string str03 = ostrstream0.str();
126 __i_start = str03.begin();
127 __i_end = str03.end();
128 len = str03.size();
129 VERIFY( __i_start == __i_end );
130 VERIFY( len == 0 );
131 VERIFY( str01 == str03 );
132 }
133
134 // user-reported error
135 class derived_oss: public std::ostringstream
136 {
137 public:
derived_oss()138 derived_oss() : std::ostringstream() { }
139 };
140
141 void
test04()142 test04()
143 {
144 bool test = true;
145 derived_oss yy;
146 yy << "buena vista social club\n";
147 VERIFY( yy.str() == std::string("buena vista social club\n") );
148 }
149
main()150 int main()
151 {
152 test01();
153 test02();
154 test03();
155 test04();
156 return 0;
157 }
158