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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-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++14, c++1710// UNSUPPORTED: no-localization11// UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME12 13// TODO FMT This test should not require std::to_chars(floating-point)14// XFAIL: availability-fp_to_chars-missing15 16// REQUIRES: locale.fr_FR.UTF-817// REQUIRES: locale.ja_JP.UTF-818 19// <chrono>20 21// template<class charT> struct formatter<chrono::month_weekday, charT>;22 23#include <chrono>24#include <format>25 26#include <cassert>27#include <concepts>28#include <locale>29#include <iostream>30#include <type_traits>31 32#include "formatter_tests.h"33#include "make_string.h"34#include "platform_support.h" // locale name macros35#include "string_literal.h"36#include "test_macros.h"37 38template <class CharT>39static void test_no_chrono_specs() {40  // Month: valid,   weekday: valid,   index: invalid41  check(SV("Jan/Sun[0 is not a valid index]"),42        SV("{}"),43        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});44  check(SV("*Jan/Sun[0 is not a valid index]*"),45        SV("{:*^33}"),46        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});47  check(SV("*Jan/Sun[0 is not a valid index]"),48        SV("{:*>32}"),49        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});50 51  // Month: valid,   weekday: invalid, index: valid52  check(SV("Jan/8 is not a valid weekday[1]"),53        SV("{}"),54        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});55  check(SV("*Jan/8 is not a valid weekday[1]*"),56        SV("{:*^33}"),57        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});58  check(SV("*Jan/8 is not a valid weekday[1]"),59        SV("{:*>32}"),60        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});61 62  // Month: valid,   weekday: invalid,   index: invalid63  check(SV("Jan/8 is not a valid weekday[0 is not a valid index]"),64        SV("{}"),65        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});66  check(SV("*Jan/8 is not a valid weekday[0 is not a valid index]*"),67        SV("{:*^54}"),68        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});69  check(SV("*Jan/8 is not a valid weekday[0 is not a valid index]"),70        SV("{:*>53}"),71        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});72 73  // Month: invalid, weekday: valid,   index: valid74  check(SV("0 is not a valid month/Sun[1]"),75        SV("{}"),76        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});77  check(SV("*0 is not a valid month/Sun[1]*"),78        SV("{:*^31}"),79        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});80  check(SV("*0 is not a valid month/Sun[1]"),81        SV("{:*>30}"),82        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});83 84  // Month: invalid, weekday: valid,   index: invalid85  check(SV("0 is not a valid month/Sun[0 is not a valid index]"),86        SV("{}"),87        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});88  check(SV("*0 is not a valid month/Sun[0 is not a valid index]*"),89        SV("{:*^52}"),90        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});91  check(SV("*0 is not a valid month/Sun[0 is not a valid index]"),92        SV("{:*>51}"),93        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});94 95  // Month: invalid, weekday: invalid, index: valid96  check(SV("0 is not a valid month/8 is not a valid weekday[1]"),97        SV("{}"),98        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});99  check(SV("*0 is not a valid month/8 is not a valid weekday[1]*"),100        SV("{:*^52}"),101        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});102  check(SV("*0 is not a valid month/8 is not a valid weekday[1]"),103        SV("{:*>51}"),104        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});105 106  // Month: invalid, weekday: valid,   index: invalid107  check(SV("0 is not a valid month/8 is not a valid weekday[0 is not a valid index]"),108        SV("{}"),109        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});110  check(SV("*0 is not a valid month/8 is not a valid weekday[0 is not a valid index]*"),111        SV("{:*^73}"),112        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});113  check(SV("*0 is not a valid month/8 is not a valid weekday[0 is not a valid index]"),114        SV("{:*>72}"),115        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});116}117 118template <class CharT>119static void test_invalid_values() {120  // Test that %a, %b, %h, %a, and %B throw an exception.121  check_exception(122      "Formatting a weekday name needs a valid weekday",123      SV("{:%a}"),124      std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});125  check_exception(126      "Formatting a weekday name needs a valid weekday",127      SV("{:%a}"),128      std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{255}, 1}});129 130  check_exception(131      "Formatting a month name from an invalid month number",132      SV("{:%b}"),133      std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});134  check_exception(135      "Formatting a month name from an invalid month number",136      SV("{:%b}"),137      std::chrono::month_weekday{std::chrono::month{13}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});138  check_exception(139      "Formatting a month name from an invalid month number",140      SV("{:%b}"),141      std::chrono::month_weekday{std::chrono::month{255}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});142 143  check_exception(144      "Formatting a month name from an invalid month number",145      SV("{:%h}"),146      std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});147  check_exception(148      "Formatting a month name from an invalid month number",149      SV("{:%h}"),150      std::chrono::month_weekday{std::chrono::month{13}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});151  check_exception(152      "Formatting a month name from an invalid month number",153      SV("{:%h}"),154      std::chrono::month_weekday{std::chrono::month{255}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});155 156  check_exception(157      "Formatting a weekday name needs a valid weekday",158      SV("{:%A}"),159      std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});160  check_exception(161      "Formatting a weekday name needs a valid weekday",162      SV("{:%A}"),163      std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{255}, 1}});164 165  check_exception(166      "Formatting a month name from an invalid month number",167      SV("{:%B}"),168      std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});169  check_exception(170      "Formatting a month name from an invalid month number",171      SV("{:%B}"),172      std::chrono::month_weekday{std::chrono::month{13}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});173  check_exception(174      "Formatting a month name from an invalid month number",175      SV("{:%B}"),176      std::chrono::month_weekday{std::chrono::month{255}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});177}178 179template <class CharT>180static void test_valid_month() {181  constexpr std::basic_string_view<CharT> fmt  = SV("{:%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%n}");182  constexpr std::basic_string_view<CharT> lfmt = SV("{:L%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%n}");183 184  const std::locale loc(LOCALE_ja_JP_UTF_8);185  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));186 187  // Non localized output using C-locale188  check(SV("%b='Jan'\t%B='January'\t%h='Jan'\t%m='01'\t%Om='01'\n"),189        fmt,190        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});191  check(SV("%b='Feb'\t%B='February'\t%h='Feb'\t%m='02'\t%Om='02'\n"),192        fmt,193        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});194  check(SV("%b='Mar'\t%B='March'\t%h='Mar'\t%m='03'\t%Om='03'\n"),195        fmt,196        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});197  check(SV("%b='Apr'\t%B='April'\t%h='Apr'\t%m='04'\t%Om='04'\n"),198        fmt,199        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});200  check(SV("%b='May'\t%B='May'\t%h='May'\t%m='05'\t%Om='05'\n"),201        fmt,202        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});203  check(SV("%b='Jun'\t%B='June'\t%h='Jun'\t%m='06'\t%Om='06'\n"),204        fmt,205        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});206  check(SV("%b='Jul'\t%B='July'\t%h='Jul'\t%m='07'\t%Om='07'\n"),207        fmt,208        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});209  check(SV("%b='Aug'\t%B='August'\t%h='Aug'\t%m='08'\t%Om='08'\n"),210        fmt,211        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});212  check(SV("%b='Sep'\t%B='September'\t%h='Sep'\t%m='09'\t%Om='09'\n"),213        fmt,214        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});215  check(SV("%b='Oct'\t%B='October'\t%h='Oct'\t%m='10'\t%Om='10'\n"),216        fmt,217        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});218  check(SV("%b='Nov'\t%B='November'\t%h='Nov'\t%m='11'\t%Om='11'\n"),219        fmt,220        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});221  check(SV("%b='Dec'\t%B='December'\t%h='Dec'\t%m='12'\t%Om='12'\n"),222        fmt,223        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});224 225  // Use the global locale (fr_FR)226#if defined(__APPLE__)227  check(SV("%b='jan'\t%B='janvier'\t%h='jan'\t%m='01'\t%Om='01'\n"),228        lfmt,229        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});230  check(SV("%b='fév'\t%B='février'\t%h='fév'\t%m='02'\t%Om='02'\n"),231        lfmt,232        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});233  check(SV("%b='mar'\t%B='mars'\t%h='mar'\t%m='03'\t%Om='03'\n"),234        lfmt,235        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});236  check(SV("%b='avr'\t%B='avril'\t%h='avr'\t%m='04'\t%Om='04'\n"),237        lfmt,238        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});239  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\n"),240        lfmt,241        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});242  check(SV("%b='jui'\t%B='juin'\t%h='jui'\t%m='06'\t%Om='06'\n"),243        lfmt,244        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});245  check(SV("%b='jul'\t%B='juillet'\t%h='jul'\t%m='07'\t%Om='07'\n"),246        lfmt,247        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});248  check(SV("%b='aoû'\t%B='août'\t%h='aoû'\t%m='08'\t%Om='08'\n"),249        lfmt,250        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});251  check(SV("%b='sep'\t%B='septembre'\t%h='sep'\t%m='09'\t%Om='09'\n"),252        lfmt,253        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});254  check(SV("%b='oct'\t%B='octobre'\t%h='oct'\t%m='10'\t%Om='10'\n"),255        lfmt,256        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});257  check(SV("%b='nov'\t%B='novembre'\t%h='nov'\t%m='11'\t%Om='11'\n"),258        lfmt,259        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});260  check(SV("%b='déc'\t%B='décembre'\t%h='déc'\t%m='12'\t%Om='12'\n"),261        lfmt,262        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});263#else    // defined(__APPLE__)264  check(SV("%b='janv.'\t%B='janvier'\t%h='janv.'\t%m='01'\t%Om='01'\n"),265        lfmt,266        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});267  check(SV("%b='févr.'\t%B='février'\t%h='févr.'\t%m='02'\t%Om='02'\n"),268        lfmt,269        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});270  check(SV("%b='mars'\t%B='mars'\t%h='mars'\t%m='03'\t%Om='03'\n"),271        lfmt,272        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});273  check(274#  if defined(_WIN32) || defined(_AIX) || defined(__FreeBSD__)275      SV("%b='avr.'\t%B='avril'\t%h='avr.'\t%m='04'\t%Om='04'\n"),276#  else  // defined(_WIN32) || defined(_AIX) || defined(__FreeBSD__)277      SV("%b='avril'\t%B='avril'\t%h='avril'\t%m='04'\t%Om='04'\n"),278#  endif // defined(_WIN32) || defined(_AIX) || defined(__FreeBSD__)279      lfmt,280      std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});281  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\n"),282        lfmt,283        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});284  check(SV("%b='juin'\t%B='juin'\t%h='juin'\t%m='06'\t%Om='06'\n"),285        lfmt,286        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});287  check(SV("%b='juil.'\t%B='juillet'\t%h='juil.'\t%m='07'\t%Om='07'\n"),288        lfmt,289        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});290  check(SV("%b='août'\t%B='août'\t%h='août'\t%m='08'\t%Om='08'\n"),291        lfmt,292        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});293  check(SV("%b='sept.'\t%B='septembre'\t%h='sept.'\t%m='09'\t%Om='09'\n"),294        lfmt,295        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});296  check(SV("%b='oct.'\t%B='octobre'\t%h='oct.'\t%m='10'\t%Om='10'\n"),297        lfmt,298        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});299  check(SV("%b='nov.'\t%B='novembre'\t%h='nov.'\t%m='11'\t%Om='11'\n"),300        lfmt,301        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});302  check(SV("%b='déc.'\t%B='décembre'\t%h='déc.'\t%m='12'\t%Om='12'\n"),303        lfmt,304        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});305#endif   // defined(__APPLE__)306 307  // Use supplied locale (ja_JP)308#ifdef _WIN32309  check(loc,310        SV("%b='1'\t%B='1月'\t%h='1'\t%m='01'\t%Om='01'\n"),311        lfmt,312        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});313  check(loc,314        SV("%b='2'\t%B='2月'\t%h='2'\t%m='02'\t%Om='02'\n"),315        lfmt,316        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});317  check(loc,318        SV("%b='3'\t%B='3月'\t%h='3'\t%m='03'\t%Om='03'\n"),319        lfmt,320        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});321  check(loc,322        SV("%b='4'\t%B='4月'\t%h='4'\t%m='04'\t%Om='04'\n"),323        lfmt,324        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});325  check(loc,326        SV("%b='5'\t%B='5月'\t%h='5'\t%m='05'\t%Om='05'\n"),327        lfmt,328        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});329  check(loc,330        SV("%b='6'\t%B='6月'\t%h='6'\t%m='06'\t%Om='06'\n"),331        lfmt,332        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});333  check(loc,334        SV("%b='7'\t%B='7月'\t%h='7'\t%m='07'\t%Om='07'\n"),335        lfmt,336        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});337  check(loc,338        SV("%b='8'\t%B='8月'\t%h='8'\t%m='08'\t%Om='08'\n"),339        lfmt,340        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});341  check(loc,342        SV("%b='9'\t%B='9月'\t%h='9'\t%m='09'\t%Om='09'\n"),343        lfmt,344        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});345  check(loc,346        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\n"),347        lfmt,348        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});349  check(loc,350        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\n"),351        lfmt,352        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});353  check(loc,354        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\n"),355        lfmt,356        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});357#elif defined(__APPLE__) // defined(_WIN32)358  check(loc,359        SV("%b=' 1'\t%B='1月'\t%h=' 1'\t%m='01'\t%Om='01'\n"),360        lfmt,361        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});362  check(loc,363        SV("%b=' 2'\t%B='2月'\t%h=' 2'\t%m='02'\t%Om='02'\n"),364        lfmt,365        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});366  check(loc,367        SV("%b=' 3'\t%B='3月'\t%h=' 3'\t%m='03'\t%Om='03'\n"),368        lfmt,369        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});370  check(loc,371        SV("%b=' 4'\t%B='4月'\t%h=' 4'\t%m='04'\t%Om='04'\n"),372        lfmt,373        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});374  check(loc,375        SV("%b=' 5'\t%B='5月'\t%h=' 5'\t%m='05'\t%Om='05'\n"),376        lfmt,377        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});378  check(loc,379        SV("%b=' 6'\t%B='6月'\t%h=' 6'\t%m='06'\t%Om='06'\n"),380        lfmt,381        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});382  check(loc,383        SV("%b=' 7'\t%B='7月'\t%h=' 7'\t%m='07'\t%Om='07'\n"),384        lfmt,385        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});386  check(loc,387        SV("%b=' 8'\t%B='8月'\t%h=' 8'\t%m='08'\t%Om='08'\n"),388        lfmt,389        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});390  check(loc,391        SV("%b=' 9'\t%B='9月'\t%h=' 9'\t%m='09'\t%Om='09'\n"),392        lfmt,393        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});394  check(loc,395        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\n"),396        lfmt,397        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});398  check(loc,399        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\n"),400        lfmt,401        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});402  check(loc,403        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\n"),404        lfmt,405        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});406#elif defined(_AIX)      // _WIN32407  check(loc,408        SV("%b='1月'\t%B='1月'\t%h='1月'\t%m='01'\t%Om='01'\n"),409        lfmt,410        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});411  check(loc,412        SV("%b='2月'\t%B='2月'\t%h='2月'\t%m='02'\t%Om='02'\n"),413        lfmt,414        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});415  check(loc,416        SV("%b='3月'\t%B='3月'\t%h='3月'\t%m='03'\t%Om='03'\n"),417        lfmt,418        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});419  check(loc,420        SV("%b='4月'\t%B='4月'\t%h='4月'\t%m='04'\t%Om='04'\n"),421        lfmt,422        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});423  check(loc,424        SV("%b='5月'\t%B='5月'\t%h='5月'\t%m='05'\t%Om='05'\n"),425        lfmt,426        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});427  check(loc,428        SV("%b='6月'\t%B='6月'\t%h='6月'\t%m='06'\t%Om='06'\n"),429        lfmt,430        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});431  check(loc,432        SV("%b='7月'\t%B='7月'\t%h='7月'\t%m='07'\t%Om='07'\n"),433        lfmt,434        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});435  check(loc,436        SV("%b='8月'\t%B='8月'\t%h='8月'\t%m='08'\t%Om='08'\n"),437        lfmt,438        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});439  check(loc,440        SV("%b='9月'\t%B='9月'\t%h='9月'\t%m='09'\t%Om='09'\n"),441        lfmt,442        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});443  check(loc,444        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='10'\n"),445        lfmt,446        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});447  check(loc,448        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='11'\n"),449        lfmt,450        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});451  check(loc,452        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='12'\n"),453        lfmt,454        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});455#elif defined(__FreeBSD__) // _WIN32456  check(loc,457        SV("%b=' 1月'\t%B='1月'\t%h=' 1月'\t%m='01'\t%Om='01'\n"),458        lfmt,459        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});460  check(loc,461        SV("%b=' 2月'\t%B='2月'\t%h=' 2月'\t%m='02'\t%Om='02'\n"),462        lfmt,463        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});464  check(loc,465        SV("%b=' 3月'\t%B='3月'\t%h=' 3月'\t%m='03'\t%Om='03'\n"),466        lfmt,467        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});468  check(loc,469        SV("%b=' 4月'\t%B='4月'\t%h=' 4月'\t%m='04'\t%Om='04'\n"),470        lfmt,471        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});472  check(loc,473        SV("%b=' 5月'\t%B='5月'\t%h=' 5月'\t%m='05'\t%Om='05'\n"),474        lfmt,475        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});476  check(loc,477        SV("%b=' 6月'\t%B='6月'\t%h=' 6月'\t%m='06'\t%Om='06'\n"),478        lfmt,479        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});480  check(loc,481        SV("%b=' 7月'\t%B='7月'\t%h=' 7月'\t%m='07'\t%Om='07'\n"),482        lfmt,483        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});484  check(loc,485        SV("%b=' 8月'\t%B='8月'\t%h=' 8月'\t%m='08'\t%Om='08'\n"),486        lfmt,487        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});488  check(loc,489        SV("%b=' 9月'\t%B='9月'\t%h=' 9月'\t%m='09'\t%Om='09'\n"),490        lfmt,491        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});492  check(loc,493        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='10'\n"),494        lfmt,495        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});496  check(loc,497        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='11'\n"),498        lfmt,499        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});500  check(loc,501        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='12'\n"),502        lfmt,503        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});504#else                    // _WIN32505  check(loc,506        SV("%b=' 1月'\t%B='1月'\t%h=' 1月'\t%m='01'\t%Om='一'\n"),507        lfmt,508        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});509  check(loc,510        SV("%b=' 2月'\t%B='2月'\t%h=' 2月'\t%m='02'\t%Om='二'\n"),511        lfmt,512        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});513  check(loc,514        SV("%b=' 3月'\t%B='3月'\t%h=' 3月'\t%m='03'\t%Om='三'\n"),515        lfmt,516        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});517  check(loc,518        SV("%b=' 4月'\t%B='4月'\t%h=' 4月'\t%m='04'\t%Om='四'\n"),519        lfmt,520        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});521  check(loc,522        SV("%b=' 5月'\t%B='5月'\t%h=' 5月'\t%m='05'\t%Om='五'\n"),523        lfmt,524        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});525  check(loc,526        SV("%b=' 6月'\t%B='6月'\t%h=' 6月'\t%m='06'\t%Om='六'\n"),527        lfmt,528        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});529  check(loc,530        SV("%b=' 7月'\t%B='7月'\t%h=' 7月'\t%m='07'\t%Om='七'\n"),531        lfmt,532        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});533  check(loc,534        SV("%b=' 8月'\t%B='8月'\t%h=' 8月'\t%m='08'\t%Om='八'\n"),535        lfmt,536        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});537  check(loc,538        SV("%b=' 9月'\t%B='9月'\t%h=' 9月'\t%m='09'\t%Om='九'\n"),539        lfmt,540        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});541  check(loc,542        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='十'\n"),543        lfmt,544        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});545  check(loc,546        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='十一'\n"),547        lfmt,548        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});549  check(loc,550        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='十二'\n"),551        lfmt,552        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});553#endif                   // _WIN32554 555  std::locale::global(std::locale::classic());556}557 558template <class CharT>559static void test_valid_weekday() {560  constexpr std::basic_string_view<CharT> fmt =561      SV("{:%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%t%%a='%a'%t%%A='%A'%n}");562  constexpr std::basic_string_view<CharT> lfmt =563      SV("{:L%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%t%%a='%a'%t%%A='%A'%n}");564 565  const std::locale loc(LOCALE_ja_JP_UTF_8);566  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));567 568  // Non localized output using C-locale569  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Sun'\t%A='Sunday'\n"),570        fmt,571        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});572  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='Mon'\t%A='Monday'\n"),573        fmt,574        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});575  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='Tue'\t%A='Tuesday'\n"),576        fmt,577        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{2}, 1}});578  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='Wed'\t%A='Wednesday'\n"),579        fmt,580        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{3}, 1}});581  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='Thu'\t%A='Thursday'\n"),582        fmt,583        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});584  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='Fri'\t%A='Friday'\n"),585        fmt,586        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{5}, 1}});587  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='Sat'\t%A='Saturday'\n"),588        fmt,589        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{6}, 1}});590  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Sun'\t%A='Sunday'\n"),591        fmt,592        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{7}, 1}});593 594  // Use the global locale (fr_FR)595#if defined(__APPLE__)596  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Dim'\t%A='Dimanche'\n"),597        lfmt,598        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});599  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='Lun'\t%A='Lundi'\n"),600        lfmt,601        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});602  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='Mar'\t%A='Mardi'\n"),603        lfmt,604        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{2}, 1}});605  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='Mer'\t%A='Mercredi'\n"),606        lfmt,607        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{3}, 1}});608  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='Jeu'\t%A='Jeudi'\n"),609        lfmt,610        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});611  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='Ven'\t%A='Vendredi'\n"),612        lfmt,613        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{5}, 1}});614  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='Sam'\t%A='Samedi'\n"),615        lfmt,616        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{6}, 1}});617  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Dim'\t%A='Dimanche'\n"),618        lfmt,619        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{7}, 1}});620#else  // defined(__APPLE__)621  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='dim.'\t%A='dimanche'\n"),622        lfmt,623        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});624  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='lun.'\t%A='lundi'\n"),625        lfmt,626        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});627  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='mar.'\t%A='mardi'\n"),628        lfmt,629        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{2}, 1}});630  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='mer.'\t%A='mercredi'\n"),631        lfmt,632        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{3}, 1}});633  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='jeu.'\t%A='jeudi'\n"),634        lfmt,635        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});636  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='ven.'\t%A='vendredi'\n"),637        lfmt,638        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{5}, 1}});639  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='sam.'\t%A='samedi'\n"),640        lfmt,641        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{6}, 1}});642  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='dim.'\t%A='dimanche'\n"),643        lfmt,644        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{7}, 1}});645#endif // defined(__APPLE__)646 647  // Use supplied locale (ja_JP).648  // This locale has a different alternate, but not on all platforms649#if defined(_WIN32) || defined(__APPLE__) || defined(_AIX) || defined(__FreeBSD__)650  check(loc,651        SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='日'\t%A='日曜日'\n"),652        lfmt,653        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});654  check(loc,655        SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='月'\t%A='月曜日'\n"),656        lfmt,657        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});658  check(loc,659        SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='火'\t%A='火曜日'\n"),660        lfmt,661        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{2}, 1}});662  check(loc,663        SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='水'\t%A='水曜日'\n"),664        lfmt,665        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{3}, 1}});666  check(loc,667        SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='木'\t%A='木曜日'\n"),668        lfmt,669        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});670  check(loc,671        SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='金'\t%A='金曜日'\n"),672        lfmt,673        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{5}, 1}});674  check(loc,675        SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='土'\t%A='土曜日'\n"),676        lfmt,677        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{6}, 1}});678  check(loc,679        SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='日'\t%A='日曜日'\n"),680        lfmt,681        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{7}, 1}});682#else  // defined(_WIN32) || defined(__APPLE__) || defined(_AIX) || defined(__FreeBSD__)683  check(loc,684        SV("%u='7'\t%Ou='七'\t%w='0'\t%Ow='〇'\t%a='日'\t%A='日曜日'\n"),685        lfmt,686        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});687  check(loc,688        SV("%u='1'\t%Ou='一'\t%w='1'\t%Ow='一'\t%a='月'\t%A='月曜日'\n"),689        lfmt,690        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});691  check(loc,692        SV("%u='2'\t%Ou='二'\t%w='2'\t%Ow='二'\t%a='火'\t%A='火曜日'\n"),693        lfmt,694        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{2}, 1}});695  check(loc,696        SV("%u='3'\t%Ou='三'\t%w='3'\t%Ow='三'\t%a='水'\t%A='水曜日'\n"),697        lfmt,698        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{3}, 1}});699  check(loc,700        SV("%u='4'\t%Ou='四'\t%w='4'\t%Ow='四'\t%a='木'\t%A='木曜日'\n"),701        lfmt,702        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});703  check(loc,704        SV("%u='5'\t%Ou='五'\t%w='5'\t%Ow='五'\t%a='金'\t%A='金曜日'\n"),705        lfmt,706        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{5}, 1}});707  check(loc,708        SV("%u='6'\t%Ou='六'\t%w='6'\t%Ow='六'\t%a='土'\t%A='土曜日'\n"),709        lfmt,710        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{6}, 1}});711  check(loc,712        SV("%u='7'\t%Ou='七'\t%w='0'\t%Ow='〇'\t%a='日'\t%A='日曜日'\n"),713        lfmt,714        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{7}, 1}});715#endif // defined(_WIN32) || defined(__APPLE__) || defined(_AIX) || defined(__FreeBSD__)716 717  std::locale::global(std::locale::classic());718}719 720template <class CharT>721static void test_valid_values() {722  test_valid_month<CharT>();723  test_valid_weekday<CharT>();724}725 726template <class CharT>727static void test() {728  test_no_chrono_specs<CharT>();729  test_invalid_values<CharT>();730  test_valid_values<CharT>();731  check_invalid_types<CharT>(732      {SV("a"), SV("A"), SV("b"), SV("B"), SV("h"), SV("m"), SV("u"), SV("w"), SV("Om"), SV("Ou"), SV("Ow")},733      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});734 735  check_exception(736      "The format specifier expects a '%' or a '}'",737      SV("{:A"),738      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});739  check_exception(740      "The chrono specifiers contain a '{'",741      SV("{:%%{"),742      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});743  check_exception(744      "End of input while parsing a conversion specifier",745      SV("{:%"),746      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});747  check_exception(748      "End of input while parsing the modifier E",749      SV("{:%E"),750      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});751  check_exception(752      "End of input while parsing the modifier O",753      SV("{:%O"),754      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});755 756  // Precision not allowed757  check_exception(758      "The format specifier expects a '%' or a '}'",759      SV("{:.3}"),760      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});761}762 763int main(int, char**) {764  test<char>();765 766#ifndef TEST_HAS_NO_WIDE_CHARACTERS767  test<wchar_t>();768#endif769 770  return 0;771}772