fmt-11.0.2/test/unicode-test.cc

   1 // Formatting library for C++ - Unicode tests
   2 //
   3 // Copyright (c) 2012 - present, Victor Zverovich
   4 // All rights reserved.
   5 //
   6 // For the license information refer to format.h.
   7
   8 #include <iomanip>
   9 #include <locale>
  10 #include <vector>
  11
  12 #include "fmt/chrono.h"
  13 #include "gmock/gmock.h"
  14 #include "util.h"  // get_locale
  15
  16 using testing::Contains;
  17
  18 TEST(unicode_test, use_utf8) { EXPECT_TRUE(fmt::detail::use_utf8()); }
  19
  20 TEST(unicode_test, legacy_locale) {
  21   auto loc = get_locale("be_BY.CP1251", "Belarusian_Belarus.1251");
  22   if (loc == std::locale::classic()) return;
  23
  24   auto s = std::string();
  25   try {
  26     s = fmt::format(loc, "Дзень тыдня: {:L}", fmt::weekday(1));
  27   } catch (const fmt::format_error& e) {
  28     // Formatting can fail due to an unsupported encoding.
  29     fmt::print("Format error: {}\n", e.what());
  30     return;
  31   }
  32
  33 #if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 500
  34   auto&& os = std::ostringstream();
  35   os.imbue(loc);
  36   auto tm = std::tm();
  37   tm.tm_wday = 1;
  38   os << std::put_time(&tm, "%a");
  39   auto wd = os.str();
  40   if (wd == "??") {
  41     EXPECT_EQ(s, "Дзень тыдня: ??");
  42     fmt::print("std::locale gives ?? as a weekday.\n");
  43     return;
  44   }
  45 #endif
  46   EXPECT_THAT((std::vector<std::string>{"Дзень тыдня: пн", "Дзень тыдня: Пан"}),
  47               Contains(s));
  48 }