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>
24// basic_ostream<charT, traits>&
25// operator<<(basic_ostream<charT, traits>& os, const sys_days& dp);
26
27#include <cassert>
28#include <chrono>
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#include "assert_macros.h"
36#include "concat_macros.h"
37
38#define SV(S) MAKE_STRING_VIEW(CharT, S)
39
40#define TEST_EQUAL(OUT, EXPECTED) \
41 TEST_REQUIRE(OUT == EXPECTED, \
42 TEST_WRITE_CONCATENATED( \
43 "\nExpression ", #OUT, "\nExpected output ", EXPECTED, "\nActual output ", OUT, '\n'));
44
45template <class CharT>
46static std::basic_string<CharT> stream_c_locale(const std::chrono::sys_days& dp) {
47 std::basic_stringstream<CharT> sstr;
48 sstr << dp;
49 return sstr.str();
50}
51
52template <class CharT>
53static std::basic_string<CharT> stream_fr_FR_locale(const std::chrono::sys_days& dp) {
54 std::basic_stringstream<CharT> sstr;
55 const std::locale locale(LOCALE_fr_FR_UTF_8);
56 sstr.imbue(locale);
57 sstr << dp;
58 return sstr.str();
59}
60
61template <class CharT>
62static std::basic_string<CharT> stream_ja_JP_locale(const std::chrono::sys_days& dp) {
63 std::basic_stringstream<CharT> sstr;
64 const std::locale locale(LOCALE_ja_JP_UTF_8);
65 sstr.imbue(locale);
66 sstr << dp;
67 return sstr.str();
68}
69
70template <class CharT>
71static void test() {
72 TEST_EQUAL(stream_c_locale<CharT>(std::chrono::sys_days{
73 std::chrono::year_month_day{std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::day{1}}}),
74 SV("-32768-01-01 is not a valid date"));
75 TEST_EQUAL(stream_c_locale<CharT>(std::chrono::sys_days{
76 std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{1}}}),
77 SV("1970-01-01"));
78 TEST_EQUAL(stream_c_locale<CharT>(std::chrono::sys_days{
79 std::chrono::year_month_day{std::chrono::year{2000}, std::chrono::month{2}, std::chrono::day{29}}}),
80 SV("2000-02-29"));
81 TEST_EQUAL(stream_c_locale<CharT>(std::chrono::sys_days{
82 std::chrono::year_month_day{std::chrono::year{32'767}, std::chrono::month{12}, std::chrono::day{31}}}),
83 SV("32767-12-31"));
84
85 // multiples of days are considered days.
86 TEST_EQUAL(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::weeks>{std::chrono::weeks{3}}),
87 SV("1970-01-22"));
88 TEST_EQUAL(stream_c_locale<CharT>(std::chrono::sys_time<std::chrono::duration<int, std::ratio<30 * 86400>>>{
89 std::chrono::duration<int, std::ratio<30 * 86400>>{1}}),
90 SV("1970-01-31"));
91
92 TEST_EQUAL(stream_fr_FR_locale<CharT>(std::chrono::sys_days{
93 std::chrono::year_month_day{std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::day{1}}}),
94 SV("-32768-01-01 is not a valid date"));
95 TEST_EQUAL(stream_fr_FR_locale<CharT>(std::chrono::sys_days{
96 std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{1}}}),
97 SV("1970-01-01"));
98 TEST_EQUAL(stream_fr_FR_locale<CharT>(std::chrono::sys_days{
99 std::chrono::year_month_day{std::chrono::year{2000}, std::chrono::month{2}, std::chrono::day{29}}}),
100 SV("2000-02-29"));
101 TEST_EQUAL(stream_fr_FR_locale<CharT>(std::chrono::sys_days{
102 std::chrono::year_month_day{std::chrono::year{32'767}, std::chrono::month{12}, std::chrono::day{31}}}),
103 SV("32767-12-31"));
104
105 // multiples of days are considered days.
106 TEST_EQUAL(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::weeks>{std::chrono::weeks{3}}),
107 SV("1970-01-22"));
108 TEST_EQUAL(stream_fr_FR_locale<CharT>(std::chrono::sys_time<std::chrono::duration<int, std::ratio<30 * 86400>>>{
109 std::chrono::duration<int, std::ratio<30 * 86400>>{1}}),
110 SV("1970-01-31"));
111
112 TEST_EQUAL(stream_ja_JP_locale<CharT>(std::chrono::sys_days{
113 std::chrono::year_month_day{std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::day{1}}}),
114 SV("-32768-01-01 is not a valid date"));
115 TEST_EQUAL(stream_ja_JP_locale<CharT>(std::chrono::sys_days{
116 std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{1}}}),
117 SV("1970-01-01"));
118 TEST_EQUAL(stream_ja_JP_locale<CharT>(std::chrono::sys_days{
119 std::chrono::year_month_day{std::chrono::year{2000}, std::chrono::month{2}, std::chrono::day{29}}}),
120 SV("2000-02-29"));
121 TEST_EQUAL(stream_ja_JP_locale<CharT>(std::chrono::sys_days{
122 std::chrono::year_month_day{std::chrono::year{32'767}, std::chrono::month{12}, std::chrono::day{31}}}),
123 SV("32767-12-31"));
124
125 // multiples of days are considered days.
126 TEST_EQUAL(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::weeks>{std::chrono::weeks{3}}),
127 SV("1970-01-22"));
128 TEST_EQUAL(stream_ja_JP_locale<CharT>(std::chrono::sys_time<std::chrono::duration<int, std::ratio<30 * 86400>>>{
129 std::chrono::duration<int, std::ratio<30 * 86400>>{1}}),
130 SV("1970-01-31"));
131}
132
133int main(int, char**) {
134 test<char>();
135
136#ifndef TEST_HAS_NO_WIDE_CHARACTERS
137 test<wchar_t>();
138#endif
139
140 return 0;
141}
142

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