1 // Copyright (C) 2004, 2005, 2006, 2009, 2010 Free Software Foundation
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
18 // 27.6.1.2.3 basic_istream::operator>>
22 #include <testsuite_hooks.h>
27 typedef std::wios::traits_type ctraits_type;
29 bool test __attribute__((unused)) = true;
30 const std::wstring str_01;
31 const std::wstring str_02(L"art taylor kickin it on DAKAR");
34 std::wstringbuf isbuf_00(std::ios_base::in);
35 std::wstringbuf isbuf_01(std::ios_base::in | std::ios_base::out);
36 std::wstringbuf isbuf_02(str_01, std::ios_base::in);
37 std::wstringbuf isbuf_03(str_01, std::ios_base::in | std::ios_base::out);
38 std::wstringbuf isbuf_04(str_02, std::ios_base::in);
39 std::wstringbuf isbuf_05(str_02, std::ios_base::in | std::ios_base::out);
41 std::wistream is_00(0);
42 std::wistream is_01(&isbuf_01);
43 std::wistream is_02(&isbuf_02);
44 std::wistream is_03(&isbuf_03);
45 std::wistream is_04(&isbuf_04);
46 std::wistream is_05(&isbuf_05);
47 std::ios_base::iostate state1, state2, statefail, stateeof;
48 statefail = std::ios_base::failbit;
49 stateeof = std::ios_base::eofbit;
52 // template<_CharT, _Traits>
53 // basic_istream& operator>>(basic_streambuf*)
55 // null istream to empty in_buf
56 state1 = is_00.rdstate();
58 state2 = is_00.rdstate();
59 VERIFY( state1 != state2 );
60 VERIFY( static_cast<bool>(state2 & statefail) );
61 VERIFY( isbuf_00.str() == str_01 );
63 // null istream to empty in_out_buf
64 is_00.clear(std::ios_base::goodbit);
65 state1 = is_00.rdstate();
67 state2 = is_00.rdstate();
68 VERIFY( state1 != state2 );
69 VERIFY( static_cast<bool>(state2 & statefail) );
70 VERIFY( isbuf_01.str() == str_01 );
72 // null istream to full in_buf
73 is_00.clear(std::ios_base::goodbit);
74 state1 = is_00.rdstate();
76 state2 = is_00.rdstate();
77 VERIFY( state1 != state2 );
78 VERIFY( static_cast<bool>(state2 & statefail) );
79 VERIFY( isbuf_04.str() == str_02 );
81 // null istream to full in_out_buf
82 is_00.clear(std::ios_base::goodbit);
83 state1 = is_00.rdstate();
85 state2 = is_00.rdstate();
86 VERIFY( state1 != state2 );
87 VERIFY( static_cast<bool>(state2 & statefail) );
88 VERIFY( isbuf_05.str() == str_02 );
90 // empty but non-null istream to full in_buf
91 state1 = is_02.rdstate();
93 state2 = is_02.rdstate();
94 VERIFY( state1 != state2 );
95 VERIFY( static_cast<bool>(state2 & statefail) );
96 VERIFY( isbuf_04.str() == str_02 ); // as only an "in" buffer
97 VERIFY( isbuf_04.sgetc() == L'a' );
99 // empty but non-null istream to full in_out_buf
100 is_02.clear(std::ios_base::goodbit);
101 state1 = is_02.rdstate();
103 state2 = is_02.rdstate();
104 VERIFY( state1 != state2 );
105 VERIFY( static_cast<bool>(state2 & statefail) );
106 VERIFY( isbuf_05.str() == str_02 ); // as only an "in" buffer
107 VERIFY( isbuf_05.sgetc() == L'a' );
109 // full istream to empty in_buf (need out_buf, you know?)
110 state1 = is_04.rdstate();
112 state2 = is_04.rdstate();
113 VERIFY( state1 != state2 );
114 VERIFY( static_cast<bool>(state2 & statefail) );
115 VERIFY( isbuf_02.str() == str_01 ); // as only an "in" buffer
116 VERIFY( isbuf_02.sgetc() == ctraits_type::eof() );
117 VERIFY( is_04.peek() == ctraits_type::eof() ); // as failed
119 // full istream to empty in_out_buf
120 is_04.clear(std::ios_base::goodbit);
121 state1 = is_04.rdstate();
123 state2 = is_04.rdstate();
124 VERIFY( state1 != state2 );
125 VERIFY( !static_cast<bool>(state2 & statefail) );
126 VERIFY( state2 == stateeof );
127 strtmp = isbuf_03.str();
128 VERIFY( strtmp == str_02 ); // as only an "in" buffer
129 VERIFY( isbuf_03.sgetc() == L'a' );
130 VERIFY( is_04.peek() == ctraits_type::eof() );