b6bef6b688
Produce JS-visible string results as UTF-16 at their source, including numeric formatting, BigInt and BigFraction formatting, URI encoding, console formatting, parser errors, regular expression errors, Intl and Temporal records, LibUnicode locale boundaries, and LibWeb bindings. Handle fractional radix formatting through the UTF-16 builder view.
164 lines
8.1 KiB
C++
164 lines
8.1 KiB
C++
/*
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* Copyright (c) 2024-2025, Tim Flynn <trflynn89@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/TestCase.h>
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#include <AK/StringView.h>
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#include <LibUnicode/TimeZone.h>
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class TimeZoneGuard {
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public:
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explicit TimeZoneGuard(StringView time_zone)
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: m_time_zone(Unicode::current_time_zone())
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{
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auto time_zone_utf16 = Utf16String::from_utf8(time_zone);
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(void)Unicode::set_current_time_zone(time_zone_utf16);
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}
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~TimeZoneGuard()
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{
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MUST(Unicode::set_current_time_zone(m_time_zone));
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}
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Utf16String const& time_zone() const { return m_time_zone; }
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private:
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Utf16String m_time_zone;
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};
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TEST_CASE(current_time_zone)
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{
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{
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TimeZoneGuard guard { "America/New_York"sv };
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EXPECT_EQ(Unicode::current_time_zone(), "America/New_York"_utf16);
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}
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{
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TimeZoneGuard guard { "America/Los_Angeles"sv };
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EXPECT_EQ(Unicode::current_time_zone(), "America/Los_Angeles"_utf16);
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}
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{
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TimeZoneGuard guard { "ladybird"sv };
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EXPECT_EQ(Unicode::current_time_zone(), guard.time_zone());
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}
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}
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TEST_CASE(available_time_zones)
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{
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auto const& time_zones = Unicode::available_time_zones();
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EXPECT(time_zones.contains_slow("UTC"_utf16));
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EXPECT(!time_zones.contains_slow("EAT"_utf16));
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}
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TEST_CASE(available_time_zones_in_region)
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{
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{
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auto time_zones = Unicode::available_time_zones_in_region("AD"sv);
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EXPECT_EQ(time_zones, to_array({ "Europe/Andorra"_utf16 }));
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}
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{
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auto time_zones = Unicode::available_time_zones_in_region("ES"sv);
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EXPECT_EQ(time_zones, to_array({ "Africa/Ceuta"_utf16, "Atlantic/Canary"_utf16, "Europe/Madrid"_utf16 }));
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}
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}
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TEST_CASE(resolve_primary_time_zone)
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{
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EXPECT_EQ(Unicode::resolve_primary_time_zone("UTC"sv), "Etc/UTC"_utf16);
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EXPECT_EQ(Unicode::resolve_primary_time_zone("Asia/Katmandu"sv), "Asia/Kathmandu"_utf16);
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EXPECT_EQ(Unicode::resolve_primary_time_zone("Australia/Canberra"sv), "Australia/Sydney"_utf16);
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}
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using enum Unicode::TimeZoneOffset::InDST;
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static void test_offset(StringView time_zone, i64 time, AK::Duration expected_offset, Unicode::TimeZoneOffset::InDST expected_in_dst)
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{
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auto time_zone_utf16 = Utf16String::from_utf8(time_zone);
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auto actual_offset = Unicode::time_zone_offset(time_zone_utf16, AK::UnixDateTime::from_seconds_since_epoch(time));
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VERIFY(actual_offset.has_value());
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EXPECT_EQ(actual_offset->offset, expected_offset);
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EXPECT_EQ(actual_offset->in_dst, expected_in_dst);
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}
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static constexpr AK::Duration offset(i64 sign, i64 hours, i64 minutes, i64 seconds)
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{
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return AK::Duration::from_seconds(sign * ((hours * 3600) + (minutes * 60) + seconds));
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}
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TEST_CASE(time_zone_ids_with_utf16_storage)
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{
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char16_t const region[] = u"DE";
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auto time_zones = Unicode::available_time_zones_in_region({ region, 2 });
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EXPECT(time_zones.contains_slow("Europe/Berlin"_utf16));
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char16_t const time_zone[] = u"Europe/Berlin";
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auto time_zone_view = Utf16View { time_zone, 13 };
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EXPECT_EQ(Unicode::resolve_primary_time_zone(time_zone_view), "Europe/Berlin"_utf16);
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auto actual_offset = Unicode::time_zone_offset(time_zone_view, AK::UnixDateTime::from_seconds_since_epoch(0));
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VERIFY(actual_offset.has_value());
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EXPECT_EQ(actual_offset->offset, offset(+1, 1, 0, 0));
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EXPECT_EQ(actual_offset->in_dst, No);
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}
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// Useful website to convert times in the TZDB (which sometimes are and aren't UTC) to UTC and the desired local time:
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// https://www.epochconverter.com/#tools
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//
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// In the tests below, if only UTC time is shown as a comment, then the corresponding Rule change in the TZDB was specified
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// as UTC. Otherwise, the TZDB time was local, and was converted to a UTC timestamp for that test.
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TEST_CASE(time_zone_offset)
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{
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EXPECT(!Unicode::time_zone_offset("I don't exist"sv, {}).has_value());
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test_offset("America/Chicago"sv, -2717647201, offset(-1, 5, 50, 36), No); // November 18, 1883 5:59:59 PM UTC
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test_offset("America/Chicago"sv, -2717647200, offset(-1, 6, 0, 0), No); // November 18, 1883 6:00:00 PM UTC
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test_offset("America/Chicago"sv, -1067788860, offset(-1, 6, 0, 0), No); // March 1, 1936 1:59:00 AM Chicago (March 1, 1936 7:59:00 AM UTC)
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test_offset("America/Chicago"sv, -1067788800, offset(-1, 5, 0, 0), No); // March 1, 1936 3:00:00 AM Chicago (March 1, 1936 8:00:00 AM UTC)
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test_offset("America/Chicago"sv, -1045414860, offset(-1, 5, 0, 0), No); // November 15, 1936 1:59:00 AM Chicago (November 15, 1936 6:59:00 AM UTC)
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test_offset("America/Chicago"sv, -1045411200, offset(-1, 6, 0, 0), No); // November 15, 1936 2:00:00 AM Chicago (November 15, 1936 8:00:00 AM UTC)
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test_offset("Europe/London"sv, -3852662326, offset(-1, 0, 1, 15), No); // November 30, 1847 11:59:59 PM London (December 1, 1847 12:01:14 AM UTC)
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test_offset("Europe/London"sv, -3852662325, offset(+1, 0, 0, 0), No); // December 1, 1847 12:01:15 AM London (December 1, 1847 12:01:15 AM UTC)
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test_offset("Europe/London"sv, -59004001, offset(+1, 0, 0, 0), No); // February 18, 1968 1:59:59 AM London (February 18, 1968 1:59:59 AM UTC)
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test_offset("Europe/London"sv, -59004000, offset(+1, 1, 0, 0), Yes); // February 18, 1968 3:00:00 AM London (February 18, 1968 2:00:00 AM UTC)
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test_offset("Europe/London"sv, 57722399, offset(+1, 1, 0, 0), No); // October 31, 1971 1:59:59 AM UTC
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test_offset("Europe/London"sv, 57722400, offset(+1, 0, 0, 0), No); // October 31, 1971 2:00:00 AM UTC
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test_offset("UTC"sv, -1641846268, offset(+1, 0, 00, 00), No);
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test_offset("UTC"sv, 0, offset(+1, 0, 00, 00), No);
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test_offset("UTC"sv, 1641846268, offset(+1, 0, 00, 00), No);
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test_offset("Etc/GMT+4"sv, -1641846268, offset(-1, 4, 00, 00), No);
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test_offset("Etc/GMT+5"sv, 0, offset(-1, 5, 00, 00), No);
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test_offset("Etc/GMT+6"sv, 1641846268, offset(-1, 6, 00, 00), No);
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test_offset("Etc/GMT-12"sv, -1641846268, offset(+1, 12, 00, 00), No);
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test_offset("Etc/GMT-13"sv, 0, offset(+1, 13, 00, 00), No);
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test_offset("Etc/GMT-14"sv, 1641846268, offset(+1, 14, 00, 00), No);
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}
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TEST_CASE(time_zone_offset_with_dst)
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{
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test_offset("America/New_York"sv, 1642576528, offset(-1, 5, 00, 00), No); // January 19, 2022 2:15:28 AM New York (January 19, 2022 7:15:28 AM UTC)
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test_offset("America/New_York"sv, 1663568128, offset(-1, 4, 00, 00), Yes); // September 19, 2022 2:15:28 AM New York (September 19, 2022 6:15:28 AM UTC)
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test_offset("America/New_York"sv, 1671471238, offset(-1, 5, 00, 00), No); // December 19, 2022 12:33:58 PM New York (December 19, 2022 5:33:58 PM UTC)
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// Phoenix does not observe DST.
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test_offset("America/Phoenix"sv, 1642583728, offset(-1, 7, 00, 00), No); // January 19, 2022 2:15:28 AM Phoenix (January 19, 2022 9:15:28 AM UTC)
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test_offset("America/Phoenix"sv, 1663578928, offset(-1, 7, 00, 00), No); // September 19, 2022 2:15:28 AM Phoenix (September 19, 2022 9:15:28 AM UTC)
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test_offset("America/Phoenix"sv, 1671478438, offset(-1, 7, 00, 00), No); // December 19, 2022 12:33:58 PM Phoenix (December 19, 2022 7:33:58 PM UTC)
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// Moscow's observed DST changed several times in 1919.
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test_offset("Europe/Moscow"sv, -1609459200, offset(+1, 3, 31, 19), Yes); // January 1, 1919 12:00:00 AM UTC
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test_offset("Europe/Moscow"sv, -1596429079, offset(+1, 4, 31, 19), Yes); // June 1, 1919 12:00:00 AM Moscow (May 31, 1919 7:28:41 PM UTC)
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test_offset("Europe/Moscow"sv, -1592625600, offset(+1, 4, 00, 00), Yes); // July 15, 1919 12:00:00 AM Moscow (July 14, 1919 8:00:00 PM UTC)
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test_offset("Europe/Moscow"sv, -1589079600, offset(+1, 3, 00, 00), No); // August 25, 1919 12:00:00 AM Moscow (August 24, 1919 9:00:00 PM UTC)
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// Paraguay begins the year in DST.
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test_offset("America/Asuncion"sv, 1642569328, offset(-1, 3, 00, 00), Yes); // January 19, 2022 2:15:28 AM Asuncion (January 19, 2022 5:15:28 AM UTC)
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test_offset("America/Asuncion"sv, 1663568128, offset(-1, 4, 00, 00), No); // September 19, 2022 2:15:28 AM Asuncion (September 19, 2022 6:15:28 AM UTC)
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test_offset("America/Asuncion"sv, 1671464038, offset(-1, 3, 00, 00), Yes); // December 19, 2022 12:33:58 PM Asuncion (December 19, 2022 3:33:58 PM UTC)
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}
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