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<charT,traits,Allocator>& str);
15
16#include <string>
17#include <sstream>
18#include <cassert>
19
20#include "test_macros.h"
21#include "min_allocator.h"
22
23template <template <class> class Alloc>
24void test() {
25 using S = std::basic_string<char, std::char_traits<char>, Alloc<char> >;
26 using OS = std::basic_ostringstream<char, std::char_traits<char>, Alloc<char> >;
27 {
28 OS out;
29 S s("some text");
30 out << s;
31 assert(out.good());
32 assert(s == out.str());
33 }
34 {
35 OS out;
36 S s("some text");
37 out.width(12);
38 out << s;
39 assert(out.good());
40 assert(" " + s == out.str());
41 }
42#ifndef TEST_HAS_NO_WIDE_CHARACTERS
43 using WS = std::basic_string<wchar_t, std::char_traits<wchar_t>, Alloc<wchar_t> >;
44 using WOS = std::basic_ostringstream<wchar_t, std::char_traits<wchar_t>, Alloc<wchar_t> >;
45 {
46 WOS out;
47 WS s(L"some text");
48 out << s;
49 assert(out.good());
50 assert(s == out.str());
51 }
52 {
53 WOS out;
54 WS s(L"some text");
55 out.width(12);
56 out << s;
57 assert(out.good());
58 assert(L" " + s == out.str());
59 }
60#endif
61}
62
63int main(int, char**) {
64 test<std::allocator>();
65
66#if TEST_STD_VER >= 11
67 test<min_allocator>();
68#endif
69
70 return 0;
71}
72

source code of libcxx/test/std/strings/basic.string/string.nonmembers/string.io/stream_insert.pass.cpp