1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <sstream>
10 
11 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
12 // class basic_ostringstream
13 
14 // explicit basic_ostringstream(const basic_string<charT,traits,allocator>& str,
15 //                              ios_base::openmode which = ios_base::in);
16 
17 // XFAIL: FROZEN-CXX03-HEADERS-FIXME
18 
19 #include <sstream>
20 #include <cassert>
21 
22 #include "test_macros.h"
23 #include "operator_hijacker.h"
24 
25 int main(int, char**)
26 {
27     {
28         std::ostringstream ss(" 123 456");
29         assert(ss.rdbuf() != nullptr);
30         assert(ss.good());
31         assert(ss.str() == " 123 456");
32         int i = 234;
33         ss << i << ' ' << 567;
34         assert(ss.str() == "234 5676");
35     }
36     {
37       std::basic_ostringstream<char, std::char_traits<char>, operator_hijacker_allocator<char> > ss(" 123 456");
38       assert(ss.rdbuf() != nullptr);
39       assert(ss.good());
40       assert(ss.str() == " 123 456");
41       int i = 234;
42       ss << i << ' ' << 567;
43       assert(ss.str() == "234 5676");
44     }
45     {
46         std::ostringstream ss(" 123 456", std::ios_base::in);
47         assert(ss.rdbuf() != nullptr);
48         assert(ss.good());
49         assert(ss.str() == " 123 456");
50         int i = 234;
51         ss << i << ' ' << 567;
52         assert(ss.str() == "234 5676");
53     }
54     {
55       std::basic_ostringstream<char, std::char_traits<char>, operator_hijacker_allocator<char> > ss(
56           " 123 456", std::ios_base::in);
57       assert(ss.rdbuf() != nullptr);
58       assert(ss.good());
59       assert(ss.str() == " 123 456");
60       int i = 234;
61       ss << i << ' ' << 567;
62       assert(ss.str() == "234 5676");
63     }
64 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
65     {
66         std::wostringstream ss(L" 123 456");
67         assert(ss.rdbuf() != nullptr);
68         assert(ss.good());
69         assert(ss.str() == L" 123 456");
70         int i = 234;
71         ss << i << ' ' << 567;
72         assert(ss.str() == L"234 5676");
73     }
74     {
75       std::basic_ostringstream<wchar_t, std::char_traits<wchar_t>, operator_hijacker_allocator<wchar_t> > ss(
76           L" 123 456");
77       assert(ss.rdbuf() != nullptr);
78       assert(ss.good());
79       assert(ss.str() == L" 123 456");
80       int i = 234;
81       ss << i << ' ' << 567;
82       assert(ss.str() == L"234 5676");
83     }
84     {
85         std::wostringstream ss(L" 123 456", std::ios_base::in);
86         assert(ss.rdbuf() != nullptr);
87         assert(ss.good());
88         assert(ss.str() == L" 123 456");
89         int i = 234;
90         ss << i << ' ' << 567;
91         assert(ss.str() == L"234 5676");
92     }
93     {
94       std::basic_ostringstream<wchar_t, std::char_traits<wchar_t>, operator_hijacker_allocator<wchar_t> > ss(
95           L" 123 456", std::ios_base::in);
96       assert(ss.rdbuf() != nullptr);
97       assert(ss.good());
98       assert(ss.str() == L" 123 456");
99       int i = 234;
100       ss << i << ' ' << 567;
101       assert(ss.str() == L"234 5676");
102     }
103 #endif
104 
105   return 0;
106 }
107