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1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <string>
11 
12 // template<class charT, class traits, class Allocator>
13 //   basic_ostream<charT, traits>&
14 //   operator<<(basic_ostream<charT, traits>& os,
15 //              const basic_string_view<charT,traits> str);
16 
17 #include <string_view>
18 #include <sstream>
19 #include <cassert>
20 
21 using std::string_view;
22 using std::wstring_view;
23 
main()24 int main()
25 {
26     {
27         std::ostringstream out;
28         string_view sv("some text");
29         out << sv;
30         assert(out.good());
31         assert(sv == out.str());
32     }
33     {
34         std::ostringstream out;
35         std::string s("some text");
36         string_view sv(s);
37         out.width(12);
38         out << sv;
39         assert(out.good());
40         assert("   " + s == out.str());
41     }
42     {
43         std::wostringstream out;
44         wstring_view sv(L"some text");
45         out << sv;
46         assert(out.good());
47         assert(sv == out.str());
48     }
49     {
50         std::wostringstream out;
51         std::wstring s(L"some text");
52         wstring_view sv(s);
53         out.width(12);
54         out << sv;
55         assert(out.good());
56         assert(L"   " + s == out.str());
57     }
58 }
59