// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/i18n/time_formatting.h"

#include <memory>

#include "base/i18n/language_tag.h"
#include "base/i18n/rtl.h"
#include "base/i18n/test/scoped_icu_locale.h"
#include "base/i18n/timezone.h"
#include "base/i18n/unicodestring.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/icu_test_util.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/icu/source/common/unicode/uversion.h"
#include "third_party/icu/source/i18n/unicode/calendar.h"
#include "third_party/icu/source/i18n/unicode/timezone.h"
#include "third_party/icu/source/i18n/unicode/tzfmt.h"

namespace base {
namespace {

constexpr Time::Exploded kTestDateTimeExploded = {.year = 2011,
                                                  .month = 4,
                                                  .day_of_week = 6,
                                                  .day_of_month = 30,
                                                  .hour = 22,
                                                  .minute = 42,
                                                  .second = 7};

// Returns difference between the local time and GMT formatted as string.
// This function gets |time| because the difference depends on time,
// see https://en.wikipedia.org/wiki/Daylight_saving_time for details.
std::u16string GetShortTimeZone(Time time) {
  UErrorCode status = U_ZERO_ERROR;
  std::unique_ptr<icu::TimeZone> zone(icu::TimeZone::createDefault());
  std::unique_ptr<icu::TimeZoneFormat> zone_formatter(
      icu::TimeZoneFormat::createInstance(icu::Locale::getDefault(), status));
  EXPECT_TRUE(U_SUCCESS(status));
  icu::UnicodeString name;
  zone_formatter->format(
      UTZFMT_STYLE_SPECIFIC_SHORT, *zone,
      static_cast<UDate>(time.InSecondsFSinceUnixEpoch() * 1000), name,
      nullptr);
  return i18n::UnicodeStringToString16(name);
}

// Calls TimeDurationFormat() with |delta| and |width| and returns the resulting
// string. On failure, adds a failed expectation and returns an empty string.
std::u16string TimeDurationFormatString(TimeDelta delta,
                                        DurationFormatWidth width) {
  std::u16string str;
  EXPECT_TRUE(TimeDurationFormat(delta, width, &str))
      << "Failed to format " << delta.ToInternalValue() << " with width "
      << width;
  return str;
}

// Calls TimeDurationFormatWithSeconds() with |delta| and |width| and returns
// the resulting string. On failure, adds a failed expectation and returns an
// empty string.
std::u16string TimeDurationFormatWithSecondsString(TimeDelta delta,
                                                   DurationFormatWidth width) {
  std::u16string str;
  EXPECT_TRUE(TimeDurationFormatWithSeconds(delta, width, &str))
      << "Failed to format " << delta.ToInternalValue() << " with width "
      << width;
  return str;
}

// Calls TimeDurationCompactFormatWithSeconds() with |delta| and |width| and
// returns the resulting string. On failure, adds a failed expectation and
// returns an empty string.
std::u16string TimeDurationCompactFormatWithSecondsString(
    TimeDelta delta,
    DurationFormatWidth width) {
  std::u16string str;
  EXPECT_TRUE(TimeDurationCompactFormatWithSeconds(delta, width, &str))
      << "Failed to format " << delta.ToInternalValue() << " with width "
      << width;
  return str;
}

TEST(TimeFormattingTest, TimeFormatTimeOfDayDefault12h) {
  // Test for a locale defaulted to 12h clock.
  // As an instance, we use third_party/icu/source/data/locales/en.txt.
  i18n::ScopedDefaultIcuLocale restore_locale(
      i18n::GetKnownLanguageTag("en-US"));
  test::ScopedRestoreDefaultTimezone la_time("America/Los_Angeles");

  Time time;
  EXPECT_TRUE(Time::FromUTCExploded(kTestDateTimeExploded, &time));
  std::u16string clock24h(u"15:42");
  std::u16string clock12h_pm(u"3:42\u202fPM");
  std::u16string clock12h(u"3:42");
  std::u16string clock24h_millis(u"15:42:07.000");

  // The default is 12h clock.
  EXPECT_EQ(clock12h_pm, TimeFormatTimeOfDay(time));
  EXPECT_EQ(clock24h_millis, TimeFormatTimeOfDayWithMilliseconds(time));
  EXPECT_EQ(k12HourClock, GetHourClockType());
  // k{Keep,Drop}AmPm should not affect for 24h clock.
  EXPECT_EQ(clock24h, TimeFormatTimeOfDayWithHourClockType(time, k24HourClock,
                                                           kKeepAmPm));
  EXPECT_EQ(clock24h, TimeFormatTimeOfDayWithHourClockType(time, k24HourClock,
                                                           kDropAmPm));
  // k{Keep,Drop}AmPm affects for 12h clock.
  EXPECT_EQ(clock12h_pm, TimeFormatTimeOfDayWithHourClockType(
                             time, k12HourClock, kKeepAmPm));
  EXPECT_EQ(clock12h, TimeFormatTimeOfDayWithHourClockType(time, k12HourClock,
                                                           kDropAmPm));
}

TEST(TimeFormattingTest, TimeFormatTimeOfDayDefault24h) {
  // Test for a locale defaulted to 24h clock.
  // As an instance, we use third_party/icu/source/data/locales/en_GB.txt.
  i18n::ScopedDefaultIcuLocale restore_locale(
      i18n::GetKnownLanguageTag("en-GB"));
  test::ScopedRestoreDefaultTimezone la_time("America/Los_Angeles");

  Time time;
  EXPECT_TRUE(Time::FromUTCExploded(kTestDateTimeExploded, &time));
  std::u16string clock24h(u"15:42");
  std::u16string clock12h_pm(u"3:42\u202fpm");
  std::u16string clock12h(u"3:42");
  std::u16string clock24h_millis(u"15:42:07.000");

  // The default is 24h clock.
  EXPECT_EQ(clock24h, TimeFormatTimeOfDay(time));
  EXPECT_EQ(clock24h_millis, TimeFormatTimeOfDayWithMilliseconds(time));
  EXPECT_EQ(k24HourClock, GetHourClockType());
  // k{Keep,Drop}AmPm should not affect for 24h clock.
  EXPECT_EQ(clock24h, TimeFormatTimeOfDayWithHourClockType(time, k24HourClock,
                                                           kKeepAmPm));
  EXPECT_EQ(clock24h, TimeFormatTimeOfDayWithHourClockType(time, k24HourClock,
                                                           kDropAmPm));
  // k{Keep,Drop}AmPm affects for 12h clock.
  EXPECT_EQ(clock12h_pm, TimeFormatTimeOfDayWithHourClockType(
                             time, k12HourClock, kKeepAmPm));
  EXPECT_EQ(clock12h, TimeFormatTimeOfDayWithHourClockType(time, k12HourClock,
                                                           kDropAmPm));
}

TEST(TimeFormattingTest, TimeFormatTimeOfDayJP) {
  // Test for a locale that uses different mark than "AM" and "PM".
  // As an instance, we use third_party/icu/source/data/locales/ja.txt.
  i18n::ScopedDefaultIcuLocale restore_locale(
      i18n::GetKnownLanguageTag("ja-JP"));
  test::ScopedRestoreDefaultTimezone la_time("America/Los_Angeles");

  Time time;
  EXPECT_TRUE(Time::FromUTCExploded(kTestDateTimeExploded, &time));
  std::u16string clock24h(u"15:42");
  std::u16string clock12h_pm(u"午後3:42");
  std::u16string clock12h(u"3:42");

  // The default is 24h clock.
  EXPECT_EQ(clock24h, TimeFormatTimeOfDay(time));
  EXPECT_EQ(k24HourClock, GetHourClockType());
  // k{Keep,Drop}AmPm should not affect for 24h clock.
  EXPECT_EQ(clock24h, TimeFormatTimeOfDayWithHourClockType(time, k24HourClock,
                                                           kKeepAmPm));
  EXPECT_EQ(clock24h, TimeFormatTimeOfDayWithHourClockType(time, k24HourClock,
                                                           kDropAmPm));
  // k{Keep,Drop}AmPm affects for 12h clock.
  EXPECT_EQ(clock12h_pm, TimeFormatTimeOfDayWithHourClockType(
                             time, k12HourClock, kKeepAmPm));
  EXPECT_EQ(clock12h, TimeFormatTimeOfDayWithHourClockType(time, k12HourClock,
                                                           kDropAmPm));
}

TEST(TimeFormattingTest, TimeFormatTimeOfDayDE) {
  // German uses 24h by default, but uses 'AM', 'PM' for 12h format.
  i18n::ScopedDefaultIcuLocale restore_locale(i18n::GetKnownLanguageTag("de"));
  test::ScopedRestoreDefaultTimezone la_time("America/Los_Angeles");

  Time time;
  EXPECT_TRUE(Time::FromUTCExploded(kTestDateTimeExploded, &time));
  std::u16string clock24h(u"15:42");
  std::u16string clock12h_pm(u"3:42\u202fPM");
  std::u16string clock12h(u"3:42");

  // The default is 24h clock.
  EXPECT_EQ(clock24h, TimeFormatTimeOfDay(time));
  EXPECT_EQ(k24HourClock, GetHourClockType());
  // k{Keep,Drop}AmPm should not affect for 24h clock.
  EXPECT_EQ(clock24h, TimeFormatTimeOfDayWithHourClockType(time, k24HourClock,
                                                           kKeepAmPm));
  EXPECT_EQ(clock24h, TimeFormatTimeOfDayWithHourClockType(time, k24HourClock,
                                                           kDropAmPm));
  // k{Keep,Drop}AmPm affects for 12h clock.
  EXPECT_EQ(clock12h_pm, TimeFormatTimeOfDayWithHourClockType(
                             time, k12HourClock, kKeepAmPm));
  EXPECT_EQ(clock12h, TimeFormatTimeOfDayWithHourClockType(time, k12HourClock,
                                                           kDropAmPm));
}

#if BUILDFLAG(IS_CHROMEOS)
TEST(TimeFormattingTest, TimeMonthYearInUTC) {
  // See third_party/icu/source/data/locales/en.txt.
  // The date patterns are "EEEE, MMMM d, y", "MMM d, y", and "M/d/yy".
  i18n::ScopedDefaultIcuLocale restore_locale(
      i18n::GetKnownLanguageTag("en-US"));
  test::ScopedRestoreDefaultTimezone la_time("America/Los_Angeles");

  Time time;
  EXPECT_TRUE(Time::FromUTCExploded(kTestDateTimeExploded, &time));
  EXPECT_EQ(u"April 2011",
            TimeFormatMonthAndYearForTimeZone(time, icu::TimeZone::getGMT()));
  EXPECT_EQ(u"April 2011", TimeFormatMonthAndYear(time));

  const Time::Exploded kDiffMonthsForDiffTzTime = {
      2011, 4, 5, 1,  // Fri, Apr 1, 2011 UTC = Thurs, March 31, 2011 US PDT.
      0,    0, 0, 0   // 00:00:00.000 UTC = 05:00:00 previous day US PDT.
  };

  EXPECT_TRUE(Time::FromUTCExploded(kDiffMonthsForDiffTzTime, &time));
  EXPECT_EQ(u"April 2011",
            TimeFormatMonthAndYearForTimeZone(time, icu::TimeZone::getGMT()));
  EXPECT_EQ(u"March 2011", TimeFormatMonthAndYear(time));
}
#endif  // BUILDFLAG(IS_CHROMEOS)

TEST(TimeFormattingTest, TimeFormatDateUS) {
  // See third_party/icu/source/data/locales/en.txt.
  // The date patterns are "EEEE, MMMM d, y", "MMM d, y", and "M/d/yy".
  i18n::ScopedDefaultIcuLocale restore_locale(
      i18n::GetKnownLanguageTag("en-US"));
  test::ScopedRestoreDefaultTimezone la_time("America/Los_Angeles");

  Time time;
  EXPECT_TRUE(Time::FromUTCExploded(kTestDateTimeExploded, &time));

  EXPECT_EQ(u"Apr 30, 2011", TimeFormatShortDate(time));
  EXPECT_EQ(u"4/30/11", TimeFormatShortDateNumeric(time));

  EXPECT_EQ(u"4/30/11, 3:42:07\u202fPM", TimeFormatShortDateAndTime(time));
  EXPECT_EQ(u"4/30/11, 3:42:07\u202fPM " + GetShortTimeZone(time),
            TimeFormatShortDateAndTimeWithTimeZone(time));

  EXPECT_EQ(u"April 2011", TimeFormatMonthAndYear(time));

  EXPECT_EQ(u"Saturday, April 30, 2011 at 3:42:07\u202fPM",
            TimeFormatFriendlyDateAndTime(time));

  EXPECT_EQ(u"Saturday, April 30, 2011", TimeFormatFriendlyDate(time));
}

TEST(TimeFormattingTest, TimeFormatDateGB) {
  // See third_party/icu/source/data/locales/en_GB.txt.
  // The date patterns are "EEEE, d MMMM y", "d MMM y", and "dd/MM/yyyy".
  i18n::ScopedDefaultIcuLocale restore_locale(
      i18n::GetKnownLanguageTag("en-GB"));
  test::ScopedRestoreDefaultTimezone la_time("America/Los_Angeles");

  Time time;
  EXPECT_TRUE(Time::FromUTCExploded(kTestDateTimeExploded, &time));

  EXPECT_EQ(u"30 Apr 2011", TimeFormatShortDate(time));
  EXPECT_EQ(u"30/04/2011", TimeFormatShortDateNumeric(time));
  EXPECT_EQ(u"30/04/2011, 15:42:07", TimeFormatShortDateAndTime(time));
  EXPECT_EQ(u"30/04/2011, 15:42:07 " + GetShortTimeZone(time),
            TimeFormatShortDateAndTimeWithTimeZone(time));
  EXPECT_EQ(u"April 2011", TimeFormatMonthAndYear(time));
  EXPECT_EQ(u"Saturday, 30 April 2011 at 15:42:07",
            TimeFormatFriendlyDateAndTime(time));
  EXPECT_EQ(u"Saturday, 30 April 2011", TimeFormatFriendlyDate(time));
}

TEST(TimeFormattingTest, TimeFormatAsIso8601) {
  Time time;
  EXPECT_TRUE(Time::FromUTCExploded(kTestDateTimeExploded, &time));
  EXPECT_EQ("2011-04-30T22:42:07.000Z", TimeFormatAsIso8601(time));
}

TEST(TimeFormattingTest, TimeFormatAsIso8601WithTimeZone) {
  test::ScopedRestoreDefaultTimezone time_zone("Asia/Tokyo");
  Time time;
  EXPECT_TRUE(Time::FromUTCExploded(kTestDateTimeExploded, &time));
  EXPECT_EQ("2011-04-30T22:42:07.000Z",
            TimeFormatAsIso8601WithTimeZone(time, i18n::TimeZone::GMT()));
  EXPECT_EQ("2011-04-30T22:42:07.000",
            TimeFormatAsIso8601WithTimeZone(time, i18n::TimeZone::GMT(),
                                            /*include_offset_suffix=*/false));
  EXPECT_EQ("2011-05-01T07:42:07.000+09:00",
            TimeFormatAsIso8601WithTimeZone(time, i18n::TimeZone::Default()));
  EXPECT_EQ("2011-05-01T07:42:07.000",
            TimeFormatAsIso8601WithTimeZone(time, i18n::TimeZone::Default(),
                                            /*include_offset_suffix=*/false));
}

TEST(TimeFormattingTest, TimeFormatAsIso8601Precision) {
  Time time;
  EXPECT_TRUE(Time::FromUTCExploded(kTestDateTimeExploded, &time));
  using TimePrecision = i18n::DateTimeFormatterOptions::TimePrecision;

  EXPECT_EQ(
      "2011-04-30T22",
      TimeFormatAsIso8601(time, i18n::TimeZone::GMT(), TimePrecision::kHour,
                          /*include_offset_suffix=*/false));
  EXPECT_EQ(
      "2011-04-30T22:42",
      TimeFormatAsIso8601(time, i18n::TimeZone::GMT(), TimePrecision::kMinute,
                          /*include_offset_suffix=*/false));
  EXPECT_EQ(
      "2011-04-30T22:42:07",
      TimeFormatAsIso8601(time, i18n::TimeZone::GMT(), TimePrecision::kSecond,
                          /*include_offset_suffix=*/false));
  EXPECT_EQ("2011-04-30T22:42:07.000",
            TimeFormatAsIso8601(time, i18n::TimeZone::GMT(),
                                TimePrecision::kSubsecond_3,
                                /*include_offset_suffix=*/false));
  EXPECT_EQ("2011-04-30T22:42:07.000Z",
            TimeFormatAsIso8601(time, i18n::TimeZone::GMT(),
                                TimePrecision::kSubsecond_3,
                                /*include_offset_suffix=*/true));
}

TEST(TimeFormattingTest, TimeFormatHTTP) {
  Time time;
  EXPECT_TRUE(Time::FromUTCExploded(kTestDateTimeExploded, &time));
  EXPECT_EQ("Sat, 30 Apr 2011 22:42:07 GMT", TimeFormatHTTP(time));
}

// Regression test: `TimeFormatHTTP()` must render the weekday, month, and day
// from UTC as unlocalized English, independent of both the machine's local
// timezone and the ICU default locale (set to a non-English locale below). Each
// case places the local wall-clock on a different calendar day than UTC --
// negative-offset zones roll back to the previous day, positive-offset zones
// forward to the next day -- so a weekday/month taken from local time would
// disagree with the UTC output (e.g. "Sat, 01 Apr 2011 ..." for an instant that
// is Sunday, May 1 in GMT). A month boundary always also moves the day, so
// there is no "month-only" case.
TEST(TimeFormattingTest, TimeFormatHTTPUsesGmtRegardlessOfTimeZone) {
  // Use a non-English default locale so the assertions also verify that the
  // weekday/month names stay English (RFC 7231) rather than being localized.
  i18n::ScopedDefaultIcuLocale restore_locale(
      i18n::GetKnownLanguageTag("fr-FR"));

  // Negative offset (Los Angeles): the local wall-clock is the previous day.
  {
    // Previous day, same month (Jan 15 00:30 UTC == Jan 14 PST).
    test::ScopedRestoreDefaultTimezone time_zone("America/Los_Angeles");
    Time time;
    ASSERT_TRUE(Time::FromUTCExploded({.year = 2011,
                                       .month = 1,
                                       .day_of_week = 6,
                                       .day_of_month = 15,
                                       .hour = 0,
                                       .minute = 30,
                                       .second = 0},
                                      &time));
    EXPECT_EQ("Sat, 15 Jan 2011 00:30:00 GMT", TimeFormatHTTP(time));
  }
  {
    // Previous day and month (May 1 00:30 UTC == Apr 30 PDT).
    test::ScopedRestoreDefaultTimezone time_zone("America/Los_Angeles");
    Time time;
    ASSERT_TRUE(Time::FromUTCExploded({.year = 2011,
                                       .month = 5,
                                       .day_of_week = 0,
                                       .day_of_month = 1,
                                       .hour = 0,
                                       .minute = 30,
                                       .second = 0},
                                      &time));
    EXPECT_EQ("Sun, 01 May 2011 00:30:00 GMT", TimeFormatHTTP(time));
  }

  // Positive offset (Tokyo): the local wall-clock is the next day.
  {
    // Next day, same month (Jan 15 23:30 UTC == Jan 16 JST).
    test::ScopedRestoreDefaultTimezone time_zone("Asia/Tokyo");
    Time time;
    ASSERT_TRUE(Time::FromUTCExploded({.year = 2011,
                                       .month = 1,
                                       .day_of_week = 6,
                                       .day_of_month = 15,
                                       .hour = 23,
                                       .minute = 30,
                                       .second = 0},
                                      &time));
    EXPECT_EQ("Sat, 15 Jan 2011 23:30:00 GMT", TimeFormatHTTP(time));
  }
  {
    // Next day and month (Apr 30 23:30 UTC == May 1 JST).
    test::ScopedRestoreDefaultTimezone time_zone("Asia/Tokyo");
    Time time;
    ASSERT_TRUE(Time::FromUTCExploded({.year = 2011,
                                       .month = 4,
                                       .day_of_week = 6,
                                       .day_of_month = 30,
                                       .hour = 23,
                                       .minute = 30,
                                       .second = 0},
                                      &time));
    EXPECT_EQ("Sat, 30 Apr 2011 23:30:00 GMT", TimeFormatHTTP(time));
  }
}

TEST(TimeFormattingTest, TimeDurationFormat) {
  TimeDelta delta = Minutes(15 * 60 + 42);

  // US English.
  {
    i18n::ScopedDefaultIcuLocale scoped_locale(
        i18n::GetKnownLanguageTag("en-US"));
    EXPECT_EQ(u"15 hours, 42 minutes",
              TimeDurationFormatString(delta, DURATION_WIDTH_WIDE));
    EXPECT_EQ(u"15 hr, 42 min",
              TimeDurationFormatString(delta, DURATION_WIDTH_SHORT));
    EXPECT_EQ(u"15h 42m",
              TimeDurationFormatString(delta, DURATION_WIDTH_NARROW));
    EXPECT_EQ(u"15:42",
              TimeDurationFormatString(delta, DURATION_WIDTH_NUMERIC));
  }

  // Danish, with Latin alphabet but different abbreviations and punctuation.
  {
    i18n::ScopedDefaultIcuLocale scoped_locale(i18n::GetKnownLanguageTag("da"));
    EXPECT_EQ(u"15 timer og 42 minutter",
              TimeDurationFormatString(delta, DURATION_WIDTH_WIDE));
    EXPECT_EQ(u"15 t. og 42 min.",
              TimeDurationFormatString(delta, DURATION_WIDTH_SHORT));
    EXPECT_EQ(u"15 t og 42 m",
              TimeDurationFormatString(delta, DURATION_WIDTH_NARROW));
    EXPECT_EQ(u"15.42",
              TimeDurationFormatString(delta, DURATION_WIDTH_NUMERIC));
  }

  // Persian, with non-Arabic numbers.
  {
    i18n::ScopedDefaultIcuLocale scoped_locale(i18n::GetKnownLanguageTag("fa"));
    std::u16string fa_wide =
        u"\u06f1\u06f5 \u0633\u0627\u0639\u062a \u0648 \u06f4\u06f2 "
        u"\u062f\u0642"
        u"\u06cc\u0642\u0647";
    std::u16string fa_short =
        u"\u06f1\u06f5 \u0633\u0627\u0639\u062a\u060c\u200f \u06f4\u06f2 \u062f"
        u"\u0642\u06cc\u0642\u0647";
    std::u16string fa_narrow = u"\u06f1\u06f5h \u06f4\u06f2m";
    std::u16string fa_numeric = u"\u06f1\u06f5:\u06f4\u06f2";
    EXPECT_EQ(fa_wide, TimeDurationFormatString(delta, DURATION_WIDTH_WIDE));
    EXPECT_EQ(fa_short, TimeDurationFormatString(delta, DURATION_WIDTH_SHORT));
    EXPECT_EQ(fa_narrow,
              TimeDurationFormatString(delta, DURATION_WIDTH_NARROW));
    EXPECT_EQ(fa_numeric,
              TimeDurationFormatString(delta, DURATION_WIDTH_NUMERIC));
  }
}

TEST(TimeFormattingTest, TimeDurationFormatWithSeconds) {
  i18n::ScopedDefaultIcuLocale restore_locale(
      i18n::GetKnownLanguageTag("en-US"));

  // Test different formats.
  TimeDelta delta = Seconds(15 * 3600 + 42 * 60 + 30);
  EXPECT_EQ(u"15 hours, 42 minutes, 30 seconds",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"15 hr, 42 min, 30 sec",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"15h 42m 30s",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"15:42:30",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when hour >= 100.
  delta = Seconds(125 * 3600 + 42 * 60 + 30);
  EXPECT_EQ(u"125 hours, 42 minutes, 30 seconds",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"125 hr, 42 min, 30 sec",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"125h 42m 30s",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"125:42:30",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when minute = 0.
  delta = Seconds(15 * 3600 + 0 * 60 + 30);
  EXPECT_EQ(u"15 hours, 0 minutes, 30 seconds",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"15 hr, 0 min, 30 sec",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"15h 0m 30s",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"15:00:30",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when second = 0.
  delta = Seconds(15 * 3600 + 42 * 60 + 0);
  EXPECT_EQ(u"15 hours, 42 minutes, 0 seconds",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"15 hr, 42 min, 0 sec",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"15h 42m 0s",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"15:42:00",
            TimeDurationFormatWithSecondsString(delta, DURATION_WIDTH_NUMERIC));
}

TEST(TimeFormattingTest, TimeDurationCompactFormatWithSeconds) {
  i18n::ScopedDefaultIcuLocale restore_locale(
      i18n::GetKnownLanguageTag("en-US"));

  // Test different formats.
  TimeDelta delta = Seconds(15 * 3600 + 42 * 60 + 30);
  EXPECT_EQ(
      u"15 hours, 42 minutes, 30 seconds",
      TimeDurationCompactFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(
      u"15 hr, 42 min, 30 sec",
      TimeDurationCompactFormatWithSecondsString(delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"15h 42m 30s", TimeDurationCompactFormatWithSecondsString(
                                delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"15:42:30", TimeDurationCompactFormatWithSecondsString(
                             delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when hour >= 100.
  delta = Seconds(125 * 3600 + 42 * 60 + 30);
  EXPECT_EQ(
      u"125 hours, 42 minutes, 30 seconds",
      TimeDurationCompactFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(
      u"125 hr, 42 min, 30 sec",
      TimeDurationCompactFormatWithSecondsString(delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"125h 42m 30s", TimeDurationCompactFormatWithSecondsString(
                                 delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"125:42:30", TimeDurationCompactFormatWithSecondsString(
                              delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when hour = 0.
  delta = Seconds(0 * 3600 + 7 * 60 + 30);
  EXPECT_EQ(
      u"7 minutes, 30 seconds",
      TimeDurationCompactFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"7 min, 30 sec", TimeDurationCompactFormatWithSecondsString(
                                  delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"7m 30s", TimeDurationCompactFormatWithSecondsString(
                           delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"0:07:30", TimeDurationCompactFormatWithSecondsString(
                            delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when hour = 1.
  delta = Seconds(1 * 3600 + 7 * 60 + 30);
  EXPECT_EQ(
      u"1 hour, 7 minutes, 30 seconds",
      TimeDurationCompactFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"1 hr, 7 min, 30 sec", TimeDurationCompactFormatWithSecondsString(
                                        delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"1h 7m 30s", TimeDurationCompactFormatWithSecondsString(
                              delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"1:07:30", TimeDurationCompactFormatWithSecondsString(
                            delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when minute = 0.
  delta = Seconds(15 * 3600 + 0 * 60 + 30);
  EXPECT_EQ(
      u"15 hours, 0 minutes, 30 seconds",
      TimeDurationCompactFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"15 hr, 0 min, 30 sec", TimeDurationCompactFormatWithSecondsString(
                                         delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"15h 0m 30s", TimeDurationCompactFormatWithSecondsString(
                               delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"15:00:30", TimeDurationCompactFormatWithSecondsString(
                             delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when minute = 1.
  delta = Seconds(15 * 3600 + 1 * 60 + 30);
  EXPECT_EQ(
      u"15 hours, 1 minute, 30 seconds",
      TimeDurationCompactFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"15 hr, 1 min, 30 sec", TimeDurationCompactFormatWithSecondsString(
                                         delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"15h 1m 30s", TimeDurationCompactFormatWithSecondsString(
                               delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"15:01:30", TimeDurationCompactFormatWithSecondsString(
                             delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when hour = 0 and minute = 0.
  delta = Seconds(0 * 3600 + 0 * 60 + 30);
  EXPECT_EQ(u"30 seconds", TimeDurationCompactFormatWithSecondsString(
                               delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"30 sec", TimeDurationCompactFormatWithSecondsString(
                           delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"30s", TimeDurationCompactFormatWithSecondsString(
                        delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"0:00:30", TimeDurationCompactFormatWithSecondsString(
                            delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when second = 0.
  delta = Seconds(15 * 3600 + 42 * 60 + 0);
  EXPECT_EQ(
      u"15 hours, 42 minutes, 0 seconds",
      TimeDurationCompactFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"15 hr, 42 min, 0 sec", TimeDurationCompactFormatWithSecondsString(
                                         delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"15h 42m 0s", TimeDurationCompactFormatWithSecondsString(
                               delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"15:42:00", TimeDurationCompactFormatWithSecondsString(
                             delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when second = 1.
  delta = Seconds(15 * 3600 + 42 * 60 + 1);
  EXPECT_EQ(
      u"15 hours, 42 minutes, 1 second",
      TimeDurationCompactFormatWithSecondsString(delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"15 hr, 42 min, 1 sec", TimeDurationCompactFormatWithSecondsString(
                                         delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"15h 42m 1s", TimeDurationCompactFormatWithSecondsString(
                               delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"15:42:01", TimeDurationCompactFormatWithSecondsString(
                             delta, DURATION_WIDTH_NUMERIC));

  // Test edge case when delta = 0.
  delta = Seconds(0);
  EXPECT_EQ(u"0 seconds", TimeDurationCompactFormatWithSecondsString(
                              delta, DURATION_WIDTH_WIDE));
  EXPECT_EQ(u"0 sec", TimeDurationCompactFormatWithSecondsString(
                          delta, DURATION_WIDTH_SHORT));
  EXPECT_EQ(u"0s", TimeDurationCompactFormatWithSecondsString(
                       delta, DURATION_WIDTH_NARROW));
  EXPECT_EQ(u"0:00:00", TimeDurationCompactFormatWithSecondsString(
                            delta, DURATION_WIDTH_NUMERIC));
}

TEST(TimeFormattingTest, GetHourClockType_Persian) {
  i18n::ScopedDefaultIcuLocale restore_locale(i18n::GetKnownLanguageTag("fa"));
  Time time;
  EXPECT_TRUE(Time::FromUTCString("2026-05-25 22:30:00", &time));
  std::u16string result = TimeFormatTimeOfDay(time);
  // Use std::cout for debugging.
  std::cout << "Formatted time for fa: " << base::UTF16ToUTF8(result)
            << std::endl;
  HourClockType type = GetHourClockType();
  EXPECT_EQ(k24HourClock, type);
}

TEST(TimeFormattingTest, GetHourClockType_Arabic) {
  i18n::ScopedDefaultIcuLocale restore_locale(
      i18n::GetKnownLanguageTag("ar-EG"));
  HourClockType type = GetHourClockType();
  // Arabic (Egypt) normally uses eastern Arabic-Indic digits.
  // Verify that the hour clock type (12-hour) is correctly detected.
  EXPECT_EQ(k12HourClock, type);
}

TEST(TimeFormattingTest, GetHourClockType_PersianIR) {
  // Persian (Iran) normally uses eastern Arabic-Indic digits natively.
  // Verify that the hour clock type (24-hour) is correctly detected.
  i18n::ScopedDefaultIcuLocale restore_locale(
      i18n::GetKnownLanguageTag("fa-IR"));
  HourClockType type = GetHourClockType();
  EXPECT_EQ(k24HourClock, type);
}

}  // namespace
}  // namespace base