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 // UNSUPPORTED: c++03, c++11, c++14, c++17
10 // UNSUPPORTED: no-localization
11
12 // TODO FMT This test should not require std::to_chars(floating-point)
13 // XFAIL: availability-fp_to_chars-missing
14
15 // XFAIL: libcpp-has-no-experimental-tzdb
16
17 // <chrono>
18
19 // template<class charT, class traits>
20 // basic_ostream<charT, traits>&
21 // operator<<(basic_ostream<charT, traits>& os, const local_info& r);
22
23 // [time.zone.info.local]
24 // 3 Effects: Streams out the local_info object r in an unspecified format.
25 // 4 Returns: os.
26 //
27 // There is a private libc++ test that validates the exact output.
28
29 #include <cassert>
30 #include <chrono>
31 #include <memory>
32 #include <sstream>
33
34 #include "test_macros.h"
35
36 template <class CharT>
test()37 static void test() {
38 using namespace std::literals::chrono_literals;
39 std::chrono::sys_info s{std::chrono::sys_seconds{0s}, std::chrono::sys_seconds{0s}, 0h, 0min, ""};
40 std::chrono::local_info l{0, s, s};
41 std::basic_ostringstream<CharT> os;
42 std::basic_ostream<CharT>& result = std::chrono::operator<<(os, l);
43 assert(std::addressof(result) == std::addressof(os));
44 }
45
main(int,const char **)46 int main(int, const char**) {
47 test<char>();
48 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
49 test<wchar_t>();
50 #endif
51
52 return 0;
53 }
54