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 // <string>
10 
11 // template<class charT, class traits, class Allocator>
12 //   basic_ostream<charT, traits>&
13 //   operator<<(basic_ostream<charT, traits>& os,
14 //              const basic_string_view<charT,traits> str);
15 
16 #include <string_view>
17 #include <sstream>
18 #include <cassert>
19 
20 #include "test_macros.h"
21 
22 using std::string_view;
23 using std::wstring_view;
24 
25 int main(int, char**)
26 {
27     {
28         std::ostringstream out;
29         string_view sv("some text");
30         out << sv;
31         assert(out.good());
32         assert(sv == out.str());
33     }
34     {
35         std::ostringstream out;
36         std::string s("some text");
37         string_view sv(s);
38         out.width(12);
39         out << sv;
40         assert(out.good());
41         assert("   " + s == out.str());
42     }
43     {
44         std::wostringstream out;
45         wstring_view sv(L"some text");
46         out << sv;
47         assert(out.good());
48         assert(sv == out.str());
49     }
50     {
51         std::wostringstream out;
52         std::wstring s(L"some text");
53         wstring_view sv(s);
54         out.width(12);
55         out << sv;
56         assert(out.good());
57         assert(L"   " + s == out.str());
58     }
59 
60   return 0;
61 }
62