libcxx/test/std/time/time.syn/formatter.month_day_last.pass.cpp

   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 // template<class charT> struct formatter<chrono::month_day_last, 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 macros
  35 #include "string_literal.h"
  36 #include "test_macros.h"
  37
  38 template <class CharT>
  39 static void test_no_chrono_specs() {
  40   // Valid month
  41   check(SV("Jan/last"), SV("{}"), std::chrono::month_day_last{std::chrono::month{1}});
  42   check(SV("*Jan/last*"), SV("{:*^10}"), std::chrono::month_day_last{std::chrono::month{1}});
  43   check(SV("*Jan/last"), SV("{:*>9}"), std::chrono::month_day_last{std::chrono::month{1}});
  44
  45   // Invalid month
  46   check(SV("0 is not a valid month/last"), SV("{}"), std::chrono::month_day_last{std::chrono::month{0}});
  47   check(SV("*0 is not a valid month/last*"), SV("{:*^29}"), std::chrono::month_day_last{std::chrono::month{0}});
  48 }
  49
  50 template <class CharT>
  51 static void test_valid_values() {
  52   // Test that %b, %h, and %B throw an exception.
  53   check_exception("Formatting a month name from an invalid month number",
  54                   SV("{:%b}"),
  55                   std::chrono::month_day_last{std::chrono::month{200}});
  56   check_exception("Formatting a month name from an invalid month number",
  57                   SV("{:%b}"),
  58                   std::chrono::month_day_last{std::chrono::month{13}});
  59   check_exception("Formatting a month name from an invalid month number",
  60                   SV("{:%b}"),
  61                   std::chrono::month_day_last{std::chrono::month{255}});
  62
  63   check_exception("Formatting a month name from an invalid month number",
  64                   SV("{:%h}"),
  65                   std::chrono::month_day_last{std::chrono::month{0}});
  66   check_exception("Formatting a month name from an invalid month number",
  67                   SV("{:%h}"),
  68                   std::chrono::month_day_last{std::chrono::month{13}});
  69   check_exception("Formatting a month name from an invalid month number",
  70                   SV("{:%h}"),
  71                   std::chrono::month_day_last{std::chrono::month{255}});
  72
  73   check_exception("Formatting a month name from an invalid month number",
  74                   SV("{:%B}"),
  75                   std::chrono::month_day_last{std::chrono::month{0}});
  76   check_exception("Formatting a month name from an invalid month number",
  77                   SV("{:%B}"),
  78                   std::chrono::month_day_last{std::chrono::month{13}});
  79   check_exception("Formatting a month name from an invalid month number",
  80                   SV("{:%B}"),
  81                   std::chrono::month_day_last{std::chrono::month{255}});
  82
  83   constexpr std::basic_string_view<CharT> fmt  = SV("{:%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%n}");
  84   constexpr std::basic_string_view<CharT> lfmt = SV("{:L%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%n}");
  85
  86   const std::locale loc(LOCALE_ja_JP_UTF_8);
  87   std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
  88
  89   // Non localized output using C-locale
  90   check(SV("%b='Jan'\t%B='January'\t%h='Jan'\t%m='01'\t%Om='01'\n"),
  91         fmt,
  92         std::chrono::month_day_last{std::chrono::January});
  93   check(SV("%b='Feb'\t%B='February'\t%h='Feb'\t%m='02'\t%Om='02'\n"),
  94         fmt,
  95         std::chrono::month_day_last{std::chrono::February});
  96   check(
  97       SV("%b='Mar'\t%B='March'\t%h='Mar'\t%m='03'\t%Om='03'\n"), fmt, std::chrono::month_day_last{std::chrono::March});
  98   check(
  99       SV("%b='Apr'\t%B='April'\t%h='Apr'\t%m='04'\t%Om='04'\n"), fmt, std::chrono::month_day_last{std::chrono::April});
 100   check(SV("%b='May'\t%B='May'\t%h='May'\t%m='05'\t%Om='05'\n"), fmt, std::chrono::month_day_last{std::chrono::May});
 101   check(SV("%b='Jun'\t%B='June'\t%h='Jun'\t%m='06'\t%Om='06'\n"), fmt, std::chrono::month_day_last{std::chrono::June});
 102   check(SV("%b='Jul'\t%B='July'\t%h='Jul'\t%m='07'\t%Om='07'\n"), fmt, std::chrono::month_day_last{std::chrono::July});
 103   check(SV("%b='Aug'\t%B='August'\t%h='Aug'\t%m='08'\t%Om='08'\n"),
 104         fmt,
 105         std::chrono::month_day_last{std::chrono::August});
 106   check(SV("%b='Sep'\t%B='September'\t%h='Sep'\t%m='09'\t%Om='09'\n"),
 107         fmt,
 108         std::chrono::month_day_last{std::chrono::September});
 109   check(SV("%b='Oct'\t%B='October'\t%h='Oct'\t%m='10'\t%Om='10'\n"),
 110         fmt,
 111         std::chrono::month_day_last{std::chrono::October});
 112   check(SV("%b='Nov'\t%B='November'\t%h='Nov'\t%m='11'\t%Om='11'\n"),
 113         fmt,
 114         std::chrono::month_day_last{std::chrono::November});
 115   check(SV("%b='Dec'\t%B='December'\t%h='Dec'\t%m='12'\t%Om='12'\n"),
 116         fmt,
 117         std::chrono::month_day_last{std::chrono::December});
 118
 119   // Use the global locale (fr_FR)
 120 #if defined(__APPLE__)
 121   check(SV("%b='jan'\t%B='janvier'\t%h='jan'\t%m='01'\t%Om='01'\n"),
 122         lfmt,
 123         std::chrono::month_day_last{std::chrono::January});
 124   check(SV("%b='fév'\t%B='février'\t%h='fév'\t%m='02'\t%Om='02'\n"),
 125         lfmt,
 126         std::chrono::month_day_last{std::chrono::February});
 127   check(
 128       SV("%b='mar'\t%B='mars'\t%h='mar'\t%m='03'\t%Om='03'\n"), lfmt, std::chrono::month_day_last{std::chrono::March});
 129   check(
 130       SV("%b='avr'\t%B='avril'\t%h='avr'\t%m='04'\t%Om='04'\n"), lfmt, std::chrono::month_day_last{std::chrono::April});
 131   check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::month_day_last{std::chrono::May});
 132   check(SV("%b='jui'\t%B='juin'\t%h='jui'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::month_day_last{std::chrono::June});
 133   check(SV("%b='jul'\t%B='juillet'\t%h='jul'\t%m='07'\t%Om='07'\n"),
 134         lfmt,
 135         std::chrono::month_day_last{std::chrono::July});
 136   check(
 137       SV("%b='aoû'\t%B='août'\t%h='aoû'\t%m='08'\t%Om='08'\n"), lfmt, std::chrono::month_day_last{std::chrono::August});
 138   check(SV("%b='sep'\t%B='septembre'\t%h='sep'\t%m='09'\t%Om='09'\n"),
 139         lfmt,
 140         std::chrono::month_day_last{std::chrono::September});
 141   check(SV("%b='oct'\t%B='octobre'\t%h='oct'\t%m='10'\t%Om='10'\n"),
 142         lfmt,
 143         std::chrono::month_day_last{std::chrono::October});
 144   check(SV("%b='nov'\t%B='novembre'\t%h='nov'\t%m='11'\t%Om='11'\n"),
 145         lfmt,
 146         std::chrono::month_day_last{std::chrono::November});
 147   check(SV("%b='déc'\t%B='décembre'\t%h='déc'\t%m='12'\t%Om='12'\n"),
 148         lfmt,
 149         std::chrono::month_day_last{std::chrono::December});
 150 #else    // defined(__APPLE__)
 151   check(SV("%b='janv.'\t%B='janvier'\t%h='janv.'\t%m='01'\t%Om='01'\n"),
 152         lfmt,
 153         std::chrono::month_day_last{std::chrono::January});
 154   check(SV("%b='févr.'\t%B='février'\t%h='févr.'\t%m='02'\t%Om='02'\n"),
 155         lfmt,
 156         std::chrono::month_day_last{std::chrono::February});
 157   check(SV("%b='mars'\t%B='mars'\t%h='mars'\t%m='03'\t%Om='03'\n"),
 158         lfmt,
 159         std::chrono::month_day_last{std::chrono::March});
 160   check(
 161 #  if defined(_WIN32) || defined(_AIX) || defined(__FreeBSD__)
 162       SV("%b='avr.'\t%B='avril'\t%h='avr.'\t%m='04'\t%Om='04'\n"),
 163 #  else  // defined(_WIN32) || defined(_AIX) || defined(__FreeBSD__)
 164       SV("%b='avril'\t%B='avril'\t%h='avril'\t%m='04'\t%Om='04'\n"),
 165 #  endif // defined(_WIN32) || defined(_AIX) || defined(__FreeBSD__)
 166       lfmt,
 167       std::chrono::month_day_last{std::chrono::April});
 168   check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::month_day_last{std::chrono::May});
 169   check(
 170       SV("%b='juin'\t%B='juin'\t%h='juin'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::month_day_last{std::chrono::June});
 171   check(SV("%b='juil.'\t%B='juillet'\t%h='juil.'\t%m='07'\t%Om='07'\n"),
 172         lfmt,
 173         std::chrono::month_day_last{std::chrono::July});
 174   check(SV("%b='août'\t%B='août'\t%h='août'\t%m='08'\t%Om='08'\n"),
 175         lfmt,
 176         std::chrono::month_day_last{std::chrono::August});
 177   check(SV("%b='sept.'\t%B='septembre'\t%h='sept.'\t%m='09'\t%Om='09'\n"),
 178         lfmt,
 179         std::chrono::month_day_last{std::chrono::September});
 180   check(SV("%b='oct.'\t%B='octobre'\t%h='oct.'\t%m='10'\t%Om='10'\n"),
 181         lfmt,
 182         std::chrono::month_day_last{std::chrono::October});
 183   check(SV("%b='nov.'\t%B='novembre'\t%h='nov.'\t%m='11'\t%Om='11'\n"),
 184         lfmt,
 185         std::chrono::month_day_last{std::chrono::November});
 186   check(SV("%b='déc.'\t%B='décembre'\t%h='déc.'\t%m='12'\t%Om='12'\n"),
 187         lfmt,
 188         std::chrono::month_day_last{std::chrono::December});
 189 #endif   // defined(__APPLE__)
 190
 191   // Use supplied locale (ja_JP)
 192 #ifdef _WIN32
 193   check(loc,
 194         SV("%b='1'\t%B='1月'\t%h='1'\t%m='01'\t%Om='01'\n"),
 195         lfmt,
 196         std::chrono::month_day_last{std::chrono::January});
 197   check(loc,
 198         SV("%b='2'\t%B='2月'\t%h='2'\t%m='02'\t%Om='02'\n"),
 199         lfmt,
 200         std::chrono::month_day_last{std::chrono::February});
 201   check(
 202       loc, SV("%b='3'\t%B='3月'\t%h='3'\t%m='03'\t%Om='03'\n"), lfmt, std::chrono::month_day_last{std::chrono::March});
 203   check(
 204       loc, SV("%b='4'\t%B='4月'\t%h='4'\t%m='04'\t%Om='04'\n"), lfmt, std::chrono::month_day_last{std::chrono::April});
 205   check(loc, SV("%b='5'\t%B='5月'\t%h='5'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::month_day_last{std::chrono::May});
 206   check(loc, SV("%b='6'\t%B='6月'\t%h='6'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::month_day_last{std::chrono::June});
 207   check(loc, SV("%b='7'\t%B='7月'\t%h='7'\t%m='07'\t%Om='07'\n"), lfmt, std::chrono::month_day_last{std::chrono::July});
 208   check(
 209       loc, SV("%b='8'\t%B='8月'\t%h='8'\t%m='08'\t%Om='08'\n"), lfmt, std::chrono::month_day_last{std::chrono::August});
 210   check(loc,
 211         SV("%b='9'\t%B='9月'\t%h='9'\t%m='09'\t%Om='09'\n"),
 212         lfmt,
 213         std::chrono::month_day_last{std::chrono::September});
 214   check(loc,
 215         SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\n"),
 216         lfmt,
 217         std::chrono::month_day_last{std::chrono::October});
 218   check(loc,
 219         SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\n"),
 220         lfmt,
 221         std::chrono::month_day_last{std::chrono::November});
 222   check(loc,
 223         SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\n"),
 224         lfmt,
 225         std::chrono::month_day_last{std::chrono::December});
 226 #elif defined(__APPLE__) // defined(_WIN32)
 227   check(loc,
 228         SV("%b=' 1'\t%B='1月'\t%h=' 1'\t%m='01'\t%Om='01'\n"),
 229         lfmt,
 230         std::chrono::month_day_last{std::chrono::January});
 231   check(loc,
 232         SV("%b=' 2'\t%B='2月'\t%h=' 2'\t%m='02'\t%Om='02'\n"),
 233         lfmt,
 234         std::chrono::month_day_last{std::chrono::February});
 235   check(loc,
 236         SV("%b=' 3'\t%B='3月'\t%h=' 3'\t%m='03'\t%Om='03'\n"),
 237         lfmt,
 238         std::chrono::month_day_last{std::chrono::March});
 239   check(loc,
 240         SV("%b=' 4'\t%B='4月'\t%h=' 4'\t%m='04'\t%Om='04'\n"),
 241         lfmt,
 242         std::chrono::month_day_last{std::chrono::April});
 243   check(
 244       loc, SV("%b=' 5'\t%B='5月'\t%h=' 5'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::month_day_last{std::chrono::May});
 245   check(
 246       loc, SV("%b=' 6'\t%B='6月'\t%h=' 6'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::month_day_last{std::chrono::June});
 247   check(
 248       loc, SV("%b=' 7'\t%B='7月'\t%h=' 7'\t%m='07'\t%Om='07'\n"), lfmt, std::chrono::month_day_last{std::chrono::July});
 249   check(loc,
 250         SV("%b=' 8'\t%B='8月'\t%h=' 8'\t%m='08'\t%Om='08'\n"),
 251         lfmt,
 252         std::chrono::month_day_last{std::chrono::August});
 253   check(loc,
 254         SV("%b=' 9'\t%B='9月'\t%h=' 9'\t%m='09'\t%Om='09'\n"),
 255         lfmt,
 256         std::chrono::month_day_last{std::chrono::September});
 257   check(loc,
 258         SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\n"),
 259         lfmt,
 260         std::chrono::month_day_last{std::chrono::October});
 261   check(loc,
 262         SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\n"),
 263         lfmt,
 264         std::chrono::month_day_last{std::chrono::November});
 265   check(loc,
 266         SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\n"),
 267         lfmt,
 268         std::chrono::month_day_last{std::chrono::December});
 269 #elif defined(_AIX)      // defined(_WIN32)
 270   check(loc,
 271         SV("%b='1月'\t%B='1月'\t%h='1月'\t%m='01'\t%Om='01'\n"),
 272         lfmt,
 273         std::chrono::month_day_last{std::chrono::January});
 274   check(loc,
 275         SV("%b='2月'\t%B='2月'\t%h='2月'\t%m='02'\t%Om='02'\n"),
 276         lfmt,
 277         std::chrono::month_day_last{std::chrono::February});
 278   check(loc,
 279         SV("%b='3月'\t%B='3月'\t%h='3月'\t%m='03'\t%Om='03'\n"),
 280         lfmt,
 281         std::chrono::month_day_last{std::chrono::March});
 282   check(loc,
 283         SV("%b='4月'\t%B='4月'\t%h='4月'\t%m='04'\t%Om='04'\n"),
 284         lfmt,
 285         std::chrono::month_day_last{std::chrono::April});
 286   check(loc,
 287         SV("%b='5月'\t%B='5月'\t%h='5月'\t%m='05'\t%Om='05'\n"),
 288         lfmt,
 289         std::chrono::month_day_last{std::chrono::May});
 290   check(loc,
 291         SV("%b='6月'\t%B='6月'\t%h='6月'\t%m='06'\t%Om='06'\n"),
 292         lfmt,
 293         std::chrono::month_day_last{std::chrono::June});
 294   check(loc,
 295         SV("%b='7月'\t%B='7月'\t%h='7月'\t%m='07'\t%Om='07'\n"),
 296         lfmt,
 297         std::chrono::month_day_last{std::chrono::July});
 298   check(loc,
 299         SV("%b='8月'\t%B='8月'\t%h='8月'\t%m='08'\t%Om='08'\n"),
 300         lfmt,
 301         std::chrono::month_day_last{std::chrono::August});
 302   check(loc,
 303         SV("%b='9月'\t%B='9月'\t%h='9月'\t%m='09'\t%Om='09'\n"),
 304         lfmt,
 305         std::chrono::month_day_last{std::chrono::September});
 306   check(loc,
 307         SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='10'\n"),
 308         lfmt,
 309         std::chrono::month_day_last{std::chrono::October});
 310   check(loc,
 311         SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='11'\n"),
 312         lfmt,
 313         std::chrono::month_day_last{std::chrono::November});
 314   check(loc,
 315         SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='12'\n"),
 316         lfmt,
 317         std::chrono::month_day_last{std::chrono::December});
 318 #elif defined(__FreeBSD__) // defined(_WIN32)
 319   check(loc,
 320         SV("%b=' 1月'\t%B='1月'\t%h=' 1月'\t%m='01'\t%Om='01'\n"),
 321         lfmt,
 322         std::chrono::month_day_last{std::chrono::January});
 323   check(loc,
 324         SV("%b=' 2月'\t%B='2月'\t%h=' 2月'\t%m='02'\t%Om='02'\n"),
 325         lfmt,
 326         std::chrono::month_day_last{std::chrono::February});
 327   check(loc,
 328         SV("%b=' 3月'\t%B='3月'\t%h=' 3月'\t%m='03'\t%Om='03'\n"),
 329         lfmt,
 330         std::chrono::month_day_last{std::chrono::March});
 331   check(loc,
 332         SV("%b=' 4月'\t%B='4月'\t%h=' 4月'\t%m='04'\t%Om='04'\n"),
 333         lfmt,
 334         std::chrono::month_day_last{std::chrono::April});
 335   check(loc,
 336         SV("%b=' 5月'\t%B='5月'\t%h=' 5月'\t%m='05'\t%Om='05'\n"),
 337         lfmt,
 338         std::chrono::month_day_last{std::chrono::May});
 339   check(loc,
 340         SV("%b=' 6月'\t%B='6月'\t%h=' 6月'\t%m='06'\t%Om='06'\n"),
 341         lfmt,
 342         std::chrono::month_day_last{std::chrono::June});
 343   check(loc,
 344         SV("%b=' 7月'\t%B='7月'\t%h=' 7月'\t%m='07'\t%Om='07'\n"),
 345         lfmt,
 346         std::chrono::month_day_last{std::chrono::July});
 347   check(loc,
 348         SV("%b=' 8月'\t%B='8月'\t%h=' 8月'\t%m='08'\t%Om='08'\n"),
 349         lfmt,
 350         std::chrono::month_day_last{std::chrono::August});
 351   check(loc,
 352         SV("%b=' 9月'\t%B='9月'\t%h=' 9月'\t%m='09'\t%Om='09'\n"),
 353         lfmt,
 354         std::chrono::month_day_last{std::chrono::September});
 355   check(loc,
 356         SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='10'\n"),
 357         lfmt,
 358         std::chrono::month_day_last{std::chrono::October});
 359   check(loc,
 360         SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='11'\n"),
 361         lfmt,
 362         std::chrono::month_day_last{std::chrono::November});
 363   check(loc,
 364         SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='12'\n"),
 365         lfmt,
 366         std::chrono::month_day_last{std::chrono::December});
 367 #else                    // defined(_WIN32)
 368   check(loc,
 369         SV("%b=' 1月'\t%B='1月'\t%h=' 1月'\t%m='01'\t%Om='一'\n"),
 370         lfmt,
 371         std::chrono::month_day_last{std::chrono::January});
 372   check(loc,
 373         SV("%b=' 2月'\t%B='2月'\t%h=' 2月'\t%m='02'\t%Om='二'\n"),
 374         lfmt,
 375         std::chrono::month_day_last{std::chrono::February});
 376   check(loc,
 377         SV("%b=' 3月'\t%B='3月'\t%h=' 3月'\t%m='03'\t%Om='三'\n"),
 378         lfmt,
 379         std::chrono::month_day_last{std::chrono::March});
 380   check(loc,
 381         SV("%b=' 4月'\t%B='4月'\t%h=' 4月'\t%m='04'\t%Om='四'\n"),
 382         lfmt,
 383         std::chrono::month_day_last{std::chrono::April});
 384   check(loc,
 385         SV("%b=' 5月'\t%B='5月'\t%h=' 5月'\t%m='05'\t%Om='五'\n"),
 386         lfmt,
 387         std::chrono::month_day_last{std::chrono::May});
 388   check(loc,
 389         SV("%b=' 6月'\t%B='6月'\t%h=' 6月'\t%m='06'\t%Om='六'\n"),
 390         lfmt,
 391         std::chrono::month_day_last{std::chrono::June});
 392   check(loc,
 393         SV("%b=' 7月'\t%B='7月'\t%h=' 7月'\t%m='07'\t%Om='七'\n"),
 394         lfmt,
 395         std::chrono::month_day_last{std::chrono::July});
 396   check(loc,
 397         SV("%b=' 8月'\t%B='8月'\t%h=' 8月'\t%m='08'\t%Om='八'\n"),
 398         lfmt,
 399         std::chrono::month_day_last{std::chrono::August});
 400   check(loc,
 401         SV("%b=' 9月'\t%B='9月'\t%h=' 9月'\t%m='09'\t%Om='九'\n"),
 402         lfmt,
 403         std::chrono::month_day_last{std::chrono::September});
 404   check(loc,
 405         SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='十'\n"),
 406         lfmt,
 407         std::chrono::month_day_last{std::chrono::October});
 408   check(loc,
 409         SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='十一'\n"),
 410         lfmt,
 411         std::chrono::month_day_last{std::chrono::November});
 412   check(loc,
 413         SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='十二'\n"),
 414         lfmt,
 415         std::chrono::month_day_last{std::chrono::December});
 416 #endif                   // defined(_WIN32)
 417
 418   std::locale::global(std::locale::classic());
 419 }
 420
 421 template <class CharT>
 422 static void test() {
 423   test_no_chrono_specs<CharT>();
 424   test_valid_values<CharT>();
 425   check_invalid_types<CharT>(
 426       {SV("b"), SV("B"), SV("h"), SV("m"), SV("Om")}, std::chrono::month_day_last{std::chrono::January});
 427
 428   check_exception(
 429       "The format specifier expects a '%' or a '}'", SV("{:A"), std::chrono::month_day_last{std::chrono::January});
 430   check_exception(
 431       "The chrono specifiers contain a '{'", SV("{:%%{"), std::chrono::month_day_last{std::chrono::January});
 432   check_exception("End of input while parsing a conversion specifier",
 433                   SV("{:%"),
 434                   std::chrono::month_day_last{std::chrono::January});
 435   check_exception(
 436       "End of input while parsing the modifier E", SV("{:%E"), std::chrono::month_day_last{std::chrono::January});
 437   check_exception(
 438       "End of input while parsing the modifier O", SV("{:%O"), std::chrono::month_day_last{std::chrono::January});
 439
 440   // Precision not allowed
 441   check_exception(
 442       "The format specifier expects a '%' or a '}'", SV("{:.3}"), std::chrono::month_day_last{std::chrono::January});
 443 }
 444
 445 int main(int, char**) {
 446   test<char>();
 447
 448 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
 449   test<wchar_t>();
 450 #endif
 451
 452   return 0;
 453 }