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// UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME
12
13// TODO FMT This test should not require std::to_chars(floating-point)
14// XFAIL: availability-fp_to_chars-missing
15
16// REQUIRES: locale.fr_FR.UTF-8
17// REQUIRES: locale.ja_JP.UTF-8
18
19// <chrono>
20
21// class system_clock;
22
23// template<class charT, class traits, class Duration>
24// basic_ostream<charT, traits>&
25// operator<<(basic_ostream<charT, traits>& os, const sys_time<Duration>& tp);
26
27#include <chrono>
28#include <cassert>
29#include <ratio>
30#include <sstream>
31
32#include "make_string.h"
33#include "platform_support.h" // locale name macros
34#include "test_macros.h"
35
36#define SV(S) MAKE_STRING_VIEW(CharT, S)
37
38template <class CharT, class Duration>
39static std::basic_string<CharT> stream_c_locale(std::chrono::sys_time<Duration> time_point) {
40 std::basic_stringstream<CharT> sstr;
41 sstr << std::fixed << time_point;
42 return sstr.str();
43}
44
45template <class CharT, class Duration>
46static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::sys_time<Duration> time_point) {
47 std::basic_stringstream<CharT> sstr;
48 const std::locale locale(LOCALE_fr_FR_UTF_8);
49 sstr.imbue(locale);
50 sstr << std::fixed << time_point;
51 return sstr.str();
52}
53
54template <class CharT, class Duration>
55static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::sys_time<Duration> time_point) {
56 std::basic_stringstream<CharT> sstr;
57 const std::locale locale(LOCALE_ja_JP_UTF_8);
58 sstr.imbue(locale);
59 sstr << std::fixed << time_point;
60 return sstr.str();
61}
62
63template <class CharT>
64static void test_c() {
65 using namespace std::literals::chrono_literals;
66
67 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{-946'688'523'123'456'789ns}) ==
68 SV("1940-01-01 22:57:56.876543211"));
69
70 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::microseconds>{-946'688'523'123'456us}) ==
71 SV("1940-01-01 22:57:56.876544"));
72
73 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::milliseconds>{-946'688'523'123ms}) ==
74 SV("1940-01-01 22:57:56.877"));
75
76 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{-1ns}) ==
77 SV("1969-12-31 23:59:59.999999999"));
78
79 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{0ns}) ==
80 SV("1970-01-01 00:00:00.000000000"));
81
82 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{1ns}) ==
83 SV("1970-01-01 00:00:00.000000001"));
84
85 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{946'688'523'123'456'789ns}) ==
86 SV("2000-01-01 01:02:03.123456789"));
87 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::microseconds>{946'688'523'123'456us}) ==
88 SV("2000-01-01 01:02:03.123456"));
89
90 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::milliseconds>{946'684'800'123ms}) ==
91 SV("2000-01-01 00:00:00.123"));
92 assert(stream_c_locale<CharT>(std::chrono::sys_seconds{1'234'567'890s}) == SV("2009-02-13 23:31:30"));
93 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::minutes>{20'576'131min}) ==
94 SV("2009-02-13 23:31:00"));
95 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::hours>{342'935h}) == SV("2009-02-13 23:00:00"));
96
97 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::duration<signed char, std::ratio<2, 1>>>{
98 std::chrono::duration<signed char, std::ratio<2, 1>>{60}}) == SV("1970-01-01 00:02:00"));
99 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::duration<short, std::ratio<1, 2>>>{
100 std::chrono::duration<short, std::ratio<1, 2>>{3600}}) == SV("1970-01-01 00:30:00.0"));
101 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::duration<int, std::ratio<1, 4>>>{
102 std::chrono::duration<int, std::ratio<1, 4>>{3600}}) == SV("1970-01-01 00:15:00.00"));
103 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::duration<long, std::ratio<1, 10>>>{
104 std::chrono::duration<long, std::ratio<1, 10>>{36611}}) == SV("1970-01-01 01:01:01.1"));
105 assert(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::duration<long long, std::ratio<1, 100>>>{
106 std::chrono::duration<long long, std::ratio<1, 100>>{12'345'678'9010}}) == SV("2009-02-13 23:31:30.10"));
107}
108
109template <class CharT>
110static void test_fr_FR() {
111 using namespace std::literals::chrono_literals;
112
113 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{-946'688'523'123'456'789ns}) ==
114 SV("1940-01-01 22:57:56,876543211"));
115
116 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::microseconds>{-946'688'523'123'456us}) ==
117 SV("1940-01-01 22:57:56,876544"));
118
119 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::milliseconds>{-946'688'523'123ms}) ==
120 SV("1940-01-01 22:57:56,877"));
121
122 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{-1ns}) ==
123 SV("1969-12-31 23:59:59,999999999"));
124
125 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{0ns}) ==
126 SV("1970-01-01 00:00:00,000000000"));
127
128 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{1ns}) ==
129 SV("1970-01-01 00:00:00,000000001"));
130
131 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{946'688'523'123'456'789ns}) ==
132 SV("2000-01-01 01:02:03,123456789"));
133 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::microseconds>{946'688'523'123'456us}) ==
134 SV("2000-01-01 01:02:03,123456"));
135
136 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::milliseconds>{946'684'800'123ms}) ==
137 SV("2000-01-01 00:00:00,123"));
138 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_seconds{1'234'567'890s}) == SV("2009-02-13 23:31:30"));
139 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::minutes>{20'576'131min}) ==
140 SV("2009-02-13 23:31:00"));
141 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::hours>{342'935h}) == SV("2009-02-13 23:00:00"));
142
143 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::duration<signed char, std::ratio<2, 1>>>{
144 std::chrono::duration<signed char, std::ratio<2, 1>>{60}}) == SV("1970-01-01 00:02:00"));
145 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::duration<short, std::ratio<1, 2>>>{
146 std::chrono::duration<short, std::ratio<1, 2>>{3600}}) == SV("1970-01-01 00:30:00,0"));
147 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::duration<int, std::ratio<1, 4>>>{
148 std::chrono::duration<int, std::ratio<1, 4>>{3600}}) == SV("1970-01-01 00:15:00,00"));
149 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::duration<long, std::ratio<1, 10>>>{
150 std::chrono::duration<long, std::ratio<1, 10>>{36611}}) == SV("1970-01-01 01:01:01,1"));
151 assert(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::duration<long long, std::ratio<1, 100>>>{
152 std::chrono::duration<long long, std::ratio<1, 100>>{12'345'678'9010}}) == SV("2009-02-13 23:31:30,10"));
153}
154
155template <class CharT>
156static void test_ja_JP() {
157 using namespace std::literals::chrono_literals;
158
159 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{-946'688'523'123'456'789ns}) ==
160 SV("1940-01-01 22:57:56.876543211"));
161
162 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::microseconds>{-946'688'523'123'456us}) ==
163 SV("1940-01-01 22:57:56.876544"));
164
165 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::milliseconds>{-946'688'523'123ms}) ==
166 SV("1940-01-01 22:57:56.877"));
167
168 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{-1ns}) ==
169 SV("1969-12-31 23:59:59.999999999"));
170
171 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{0ns}) ==
172 SV("1970-01-01 00:00:00.000000000"));
173
174 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{1ns}) ==
175 SV("1970-01-01 00:00:00.000000001"));
176
177 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::nanoseconds>{946'688'523'123'456'789ns}) ==
178 SV("2000-01-01 01:02:03.123456789"));
179 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::microseconds>{946'688'523'123'456us}) ==
180 SV("2000-01-01 01:02:03.123456"));
181
182 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::milliseconds>{946'684'800'123ms}) ==
183 SV("2000-01-01 00:00:00.123"));
184 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_seconds{1'234'567'890s}) == SV("2009-02-13 23:31:30"));
185 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::minutes>{20'576'131min}) ==
186 SV("2009-02-13 23:31:00"));
187 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::hours>{342'935h}) == SV("2009-02-13 23:00:00"));
188
189 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::duration<signed char, std::ratio<2, 1>>>{
190 std::chrono::duration<signed char, std::ratio<2, 1>>{60}}) == SV("1970-01-01 00:02:00"));
191 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::duration<short, std::ratio<1, 2>>>{
192 std::chrono::duration<short, std::ratio<1, 2>>{3600}}) == SV("1970-01-01 00:30:00.0"));
193 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::duration<int, std::ratio<1, 4>>>{
194 std::chrono::duration<int, std::ratio<1, 4>>{3600}}) == SV("1970-01-01 00:15:00.00"));
195 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::duration<long, std::ratio<1, 10>>>{
196 std::chrono::duration<long, std::ratio<1, 10>>{36611}}) == SV("1970-01-01 01:01:01.1"));
197 assert(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::duration<long long, std::ratio<1, 100>>>{
198 std::chrono::duration<long long, std::ratio<1, 100>>{12'345'678'9010}}) == SV("2009-02-13 23:31:30.10"));
199}
200
201template <class CharT, class T>
202concept is_ostreamable = requires(std::basic_ostream<CharT>& os, T const& val) {
203 { os << val };
204};
205
206template <class CharT>
207static void test() {
208 // Test sys_time's constrains:
209 // treat_as_floating_point_v<typename Duration::rep> is false, and Duration{1} < days{1} is true.
210 static_assert(is_ostreamable<CharT, std::chrono::sys_seconds>);
211 static_assert(is_ostreamable<CharT, std::chrono::sys_time<std::chrono::duration<long long>>>);
212 // floating-point types
213 static_assert(!is_ostreamable<CharT, std::chrono::sys_time<std::chrono::duration<float>>>);
214 static_assert(!is_ostreamable<CharT, std::chrono::sys_time<std::chrono::duration<double>>>);
215 static_assert(!is_ostreamable<CharT, std::chrono::sys_time<std::chrono::duration<long double>>>);
216
217 static_assert(is_ostreamable<CharT, std::chrono::sys_days>);
218 static_assert(is_ostreamable<CharT, std::chrono::sys_time<std::chrono::duration<int, std::ratio<86400>>>>);
219
220 // duration > days{1}
221 static_assert(!is_ostreamable<CharT, std::chrono::sys_time<std::chrono::duration<int, std::ratio<86401>>>>);
222 static_assert(!is_ostreamable<CharT, std::chrono::sys_time<std::chrono::months>>);
223 static_assert(!is_ostreamable<CharT, std::chrono::sys_time<std::chrono::years>>);
224
225 // multiple of days are considered days.
226 static_assert(is_ostreamable<CharT, std::chrono::sys_time<std::chrono::duration<int, std::ratio<3 * 86400>>>>);
227 static_assert(is_ostreamable<CharT, std::chrono::sys_time<std::chrono::weeks>>);
228
229 test_c<CharT>();
230 test_fr_FR<CharT>();
231 test_ja_JP<CharT>();
232}
233
234int main(int, char**) {
235 test<char>();
236
237#ifndef TEST_HAS_NO_WIDE_CHARACTERS
238 test<wchar_t>();
239#endif
240
241 return 0;
242}
243

source code of libcxx/test/std/time/time.clock/time.clock.system/sys_time.ostream.pass.cpp