1// Copyright (C) 2004-2015 Free Software Foundation, Inc.
2//
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)
7// any later version.
8
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.
13
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/>.
17
18// 27.6.1.2.3 character extractors
19
20#include <istream>
21#include <sstream>
22#include <testsuite_hooks.h>
23
24void test01()
25{
26  bool test __attribute__((unused)) = true;
27  std::wstring str_01;
28  const std::wstring str_02(L"coltrane playing 'softly as a morning sunrise'");
29  const std::wstring str_03(L"coltrane");
30
31  std::wstringbuf isbuf_01(std::ios_base::in);
32  std::wstringbuf isbuf_02(str_02, std::ios_base::in);
33  std::wistream is_01(0);
34  std::wistream is_02(&isbuf_02);
35
36  std::ios_base::iostate state1, state2, statefail;
37  statefail = std::ios_base::failbit;
38
39  // template<_CharT, _Traits>
40  //  basic_istream& operator>>(istream&, _CharT*)
41  const int n = 20;
42  wchar_t array1[n];
43  array1[0] = L'\0';
44  typedef std::wios::traits_type ctraits_type;
45  ctraits_type::int_type i1, i2;
46
47  state1 = is_01.rdstate();
48  i1 = ctraits_type::length(array1);
49  is_01 >> array1;   // should snake 0 characters, not alter stream state
50  i2 = ctraits_type::length(array1);
51  state2 = is_01.rdstate();
52  VERIFY( i1 == i2 );
53  VERIFY( state1 != state2 );
54  VERIFY( static_cast<bool>(state2 & statefail) );
55
56  state1 = is_02.rdstate();
57  is_02 >> array1;   // should snake L"coltrane"
58  state2 = is_02.rdstate();
59  VERIFY( state1 == state2 );
60  VERIFY( !static_cast<bool>(state2 & statefail) );
61  VERIFY( array1[str_03.size() - 1] == L'e' );
62  array1[str_03.size()] = L'\0';
63  VERIFY( !str_03.compare(0, str_03.size(), array1) );
64  std::wistream::int_type int1 = is_02.peek(); // should be L' '
65  VERIFY( int1 == L' ' );
66
67  state1 = is_02.rdstate();
68  is_02 >> array1;   // should snake L"playing" as sentry "eats" ws
69  state2 = is_02.rdstate();
70  int1 = is_02.peek(); // should be L' '
71  VERIFY( int1 == L' ' );
72  VERIFY( state1 == state2 );
73  VERIFY( !static_cast<bool>(state2 & statefail) );
74}
75
76int main()
77{
78  test01();
79  return 0;
80}
81