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/*
* Copyright (C) 2026 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "TemporalCoreTest.h"
#include "CalendarArithmetic.h"
#include "CalendarFields.h"
#include "CalendarICUBridge.h"
#include "DurationArithmetic.h"
#include "ISO8601.h"
#include "ISOArithmetic.h"
#include "InstantCore.h"
#include "JSCTimeZone.h"
#include "PlainDateTimeCore.h"
#include "Rounding.h"
#include "TemporalCalendar.h"
#include "TemporalCoreTypes.h"
#include "TemporalEnums.h"
#include "TimeZoneICUBridge.h"
#include "ZonedDateTimeCore.h"
#include <stdio.h>
#include <wtf/Int128.h>
#include <wtf/text/MakeString.h>
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC {
namespace TemporalCore {
// ---------------------------------------------------------------------------
// Assertion helpers
// ---------------------------------------------------------------------------
static int s_failures = 0;
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
#define TCHECK_EQ(actual, expected, name) \
do { \
if ((actual) != (expected)) { \
fprintf(stderr, "FAIL [%s]: got %s, expected %s\n", name, #actual, #expected); \
s_failures++; \
} \
} while (0)
#define TCHECK_TRUE(cond, name) \
do { \
if (!(cond)) { \
fprintf(stderr, "FAIL [%s]: condition false: %s\n", name, #cond); \
s_failures++; \
} \
} while (0)
#define TCHECK_ERR(result, name) \
do { \
if ((result)) { \
fprintf(stderr, "FAIL [%s]: expected error but got success\n", name); \
s_failures++; \
} \
} while (0)
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
// ---------------------------------------------------------------------------
// ISOArithmetic tests — mirrors temporal_rs src/iso.rs tests
// ---------------------------------------------------------------------------
static void testAddDaysToISODate()
{
// temporal_rs: test balance_iso_date (now addDaysToISODate — same algorithm, taking a
// PlainDate + day delta directly instead of (year, month, day-with-overflow)).
// 2020-01-31 +1d -> 2020-02-01
auto r = addDaysToISODate(ISO8601::PlainDate { 2020, 1, 31 }, 1);
TCHECK_EQ(r.year(), 2020, "addDaysToISODate: 2020-01-31 +1d year");
TCHECK_EQ(r.month(), 2u, "addDaysToISODate: 2020-01-31 +1d month");
TCHECK_EQ(r.day(), 1u, "addDaysToISODate: 2020-01-31 +1d day");
// 2020-12-31 +1d -> 2021-01-01
auto r2 = addDaysToISODate(ISO8601::PlainDate { 2020, 12, 31 }, 1);
TCHECK_EQ(r2.year(), 2021, "addDaysToISODate: 2020-12-31 +1d year");
TCHECK_EQ(r2.month(), 1u, "addDaysToISODate: 2020-12-31 +1d month");
TCHECK_EQ(r2.day(), 1u, "addDaysToISODate: 2020-12-31 +1d day");
// 2020-01-01 -1d -> 2019-12-31
auto r3 = addDaysToISODate(ISO8601::PlainDate { 2020, 1, 1 }, -1);
TCHECK_EQ(r3.year(), 2019, "addDaysToISODate: 2020-01-01 -1d year");
TCHECK_EQ(r3.month(), 12u, "addDaysToISODate: 2020-01-01 -1d month");
TCHECK_EQ(r3.day(), 31u, "addDaysToISODate: 2020-01-01 -1d day");
// 2020-03-01 +0d (unchanged)
auto r4 = addDaysToISODate(ISO8601::PlainDate { 2020, 3, 1 }, 0);
TCHECK_EQ(r4.year(), 2020, "addDaysToISODate: 2020-03-01 +0d year");
TCHECK_EQ(r4.month(), 3u, "addDaysToISODate: 2020-03-01 +0d month");
TCHECK_EQ(r4.day(), 1u, "addDaysToISODate: 2020-03-01 +0d day");
}
static void testRegulateISODate()
{
// temporal_rs: test regulate_iso_date
// constrain: 2020-02-30 -> 2020-02-29 (2020 is leap year)
auto r = regulateISODate(2020, 2, 30, TemporalOverflow::Constrain);
TCHECK_TRUE(r.has_value(), "regulateISODate: constrain 2020-02-30 ok");
TCHECK_EQ(r->month(), 2u, "regulateISODate: constrain month");
TCHECK_EQ(r->day(), 29u, "regulateISODate: constrain day");
// constrain: 2021-02-30 -> 2021-02-28 (2021 not leap)
auto r2 = regulateISODate(2021, 2, 30, TemporalOverflow::Constrain);
TCHECK_TRUE(r2.has_value(), "regulateISODate: constrain 2021-02-30 ok");
TCHECK_EQ(r2->day(), 28u, "regulateISODate: constrain 2021-02-30 day");
// reject: 2020-13-01 -> error
auto r3 = regulateISODate(2020, 13, 1, TemporalOverflow::Reject);
TCHECK_TRUE(!r3.has_value(), "regulateISODate: reject 2020-13-01 errors");
// reject: valid 2020-06-15 -> ok
auto r4 = regulateISODate(2020, 6, 15, TemporalOverflow::Reject);
TCHECK_TRUE(r4.has_value(), "regulateISODate: reject 2020-06-15 ok");
TCHECK_EQ(r4->year(), 2020, "regulateISODate: reject year");
TCHECK_EQ(r4->month(), 6u, "regulateISODate: reject month");
TCHECK_EQ(r4->day(), 15u, "regulateISODate: reject day");
}
static void testISODateAdd()
{
// temporal_rs: plain_date.rs test simple_date_add
// 1976-11-18 + P43Y -> 2019-11-18
auto r1 = isoDateAdd({ 1976, 11, 18 }, ISO8601::Duration(43, 0, 0, 0, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
TCHECK_TRUE(r1.has_value(), "isoDateAdd: +43y ok");
TCHECK_EQ(r1->year(), 2019, "isoDateAdd: +43y year");
TCHECK_EQ(r1->month(), 11u, "isoDateAdd: +43y month");
TCHECK_EQ(r1->day(), 18u, "isoDateAdd: +43y day");
// 1976-11-18 + P3M -> 1977-02-18
auto r2 = isoDateAdd({ 1976, 11, 18 }, ISO8601::Duration(0, 3, 0, 0, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
TCHECK_TRUE(r2.has_value(), "isoDateAdd: +3m ok");
TCHECK_EQ(r2->year(), 1977, "isoDateAdd: +3m year");
TCHECK_EQ(r2->month(), 2u, "isoDateAdd: +3m month");
TCHECK_EQ(r2->day(), 18u, "isoDateAdd: +3m day");
// 1976-11-18 + P20D -> 1976-12-08
auto r3 = isoDateAdd({ 1976, 11, 18 }, ISO8601::Duration(0, 0, 0, 20, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
TCHECK_TRUE(r3.has_value(), "isoDateAdd: +20d ok");
TCHECK_EQ(r3->year(), 1976, "isoDateAdd: +20d year");
TCHECK_EQ(r3->month(), 12u, "isoDateAdd: +20d month");
TCHECK_EQ(r3->day(), 8u, "isoDateAdd: +20d day");
// 2019-11-18 - P43Y -> 1976-11-18
auto r4 = isoDateAdd({ 2019, 11, 18 }, ISO8601::Duration(-43, 0, 0, 0, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
TCHECK_TRUE(r4.has_value(), "isoDateAdd: -43y ok");
TCHECK_EQ(r4->year(), 1976, "isoDateAdd: -43y year");
// constrain: 2021-01-31 + P1M -> 2021-02-28 (not 2021-02-31)
auto r5 = isoDateAdd({ 2021, 1, 31 }, ISO8601::Duration(0, 1, 0, 0, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
TCHECK_TRUE(r5.has_value(), "isoDateAdd: end-of-month constrain ok");
TCHECK_EQ(r5->month(), 2u, "isoDateAdd: end-of-month month");
TCHECK_EQ(r5->day(), 28u, "isoDateAdd: end-of-month day");
}
static void testISODateCompare()
{
// temporal_rs: src/iso.rs IsoDate::cmp
TCHECK_EQ(isoDateCompare({ 2020, 1, 1 }, { 2020, 1, 1 }), 0, "isoDateCompare: equal");
TCHECK_EQ(isoDateCompare({ 2020, 1, 2 }, { 2020, 1, 1 }), 1, "isoDateCompare: later day");
TCHECK_EQ(isoDateCompare({ 2020, 1, 1 }, { 2020, 1, 2 }), -1, "isoDateCompare: earlier day");
TCHECK_EQ(isoDateCompare({ 2021, 1, 1 }, { 2020, 12, 31 }), 1, "isoDateCompare: later year");
TCHECK_EQ(isoDateCompare({ 2020, 6, 1 }, { 2020, 7, 1 }), -1, "isoDateCompare: earlier month");
}
static void testDiffISODate()
{
// temporal_rs: plain_date.rs test simple_date_until
// 1969-07-24 until 1969-10-05 in days = 73
auto r1 = diffISODate({ 1969, 7, 24 }, { 1969, 10, 5 }, TemporalUnit::Day);
TCHECK_EQ(static_cast<int64_t>(r1.days()), 73LL, "diffISODate: 73 days");
// 1969-07-24 until 1996-03-03 in days = 9719
auto r2 = diffISODate({ 1969, 7, 24 }, { 1996, 3, 3 }, TemporalUnit::Day);
TCHECK_EQ(static_cast<int64_t>(r2.days()), 9719LL, "diffISODate: 9719 days");
// 1969-07-24 until 1969-10-05 in months = 2m12d
auto r3 = diffISODate({ 1969, 7, 24 }, { 1969, 10, 5 }, TemporalUnit::Month);
TCHECK_EQ(static_cast<int64_t>(r3.months()), 2LL, "diffISODate: months");
TCHECK_EQ(static_cast<int64_t>(r3.days()), 11LL, "diffISODate: remaining days");
// Same date -> zero
auto r4 = diffISODate({ 2020, 6, 15 }, { 2020, 6, 15 }, TemporalUnit::Day);
TCHECK_EQ(static_cast<int64_t>(r4.days()), 0LL, "diffISODate: same date");
// Negative diff: 1969-10-05 until 1969-07-24 in days = -73
auto r5 = diffISODate({ 1969, 10, 5 }, { 1969, 7, 24 }, TemporalUnit::Day);
TCHECK_EQ(static_cast<int64_t>(r5.days()), -73LL, "diffISODate: negative days");
}
// ---------------------------------------------------------------------------
// Rounding tests — mirrors temporal_rs src/rounding.rs tests
// ---------------------------------------------------------------------------
static void testRoundNumberToIncrementDouble()
{
// temporal_rs: round_number_to_increment tests
// 5.5 with increment 1, HalfExpand -> 6
TCHECK_EQ(roundNumberToIncrementDouble(5.5, 1.0, RoundingMode::HalfExpand), 6.0, "round: 5.5 HalfExpand");
// 5.5 with increment 1, HalfTrunc -> 5
TCHECK_EQ(roundNumberToIncrementDouble(5.5, 1.0, RoundingMode::HalfTrunc), 5.0, "round: 5.5 HalfTrunc");
// 5.5 with increment 1, HalfEven -> 6 (round to even)
TCHECK_EQ(roundNumberToIncrementDouble(5.5, 1.0, RoundingMode::HalfEven), 6.0, "round: 5.5 HalfEven");
// 4.5 with increment 1, HalfEven -> 4 (round to even)
TCHECK_EQ(roundNumberToIncrementDouble(4.5, 1.0, RoundingMode::HalfEven), 4.0, "round: 4.5 HalfEven");
// Increment > 1: 23 / increment 5, Trunc -> 20
TCHECK_EQ(roundNumberToIncrementDouble(23.0, 5.0, RoundingMode::Trunc), 20.0, "round: 23 inc5 Trunc");
// 23 / increment 5, Ceil -> 25
TCHECK_EQ(roundNumberToIncrementDouble(23.0, 5.0, RoundingMode::Ceil), 25.0, "round: 23 inc5 Ceil");
// 23 / increment 5, Floor -> 20
TCHECK_EQ(roundNumberToIncrementDouble(23.0, 5.0, RoundingMode::Floor), 20.0, "round: 23 inc5 Floor");
// Negative: -23 / increment 5, Trunc -> -20
TCHECK_EQ(roundNumberToIncrementDouble(-23.0, 5.0, RoundingMode::Trunc), -20.0, "round: -23 inc5 Trunc");
// -23 / increment 5, Floor -> -25
TCHECK_EQ(roundNumberToIncrementDouble(-23.0, 5.0, RoundingMode::Floor), -25.0, "round: -23 inc5 Floor");
}
static void testRoundNumberToIncrementInt128()
{
// temporal_rs: round_number_to_increment (integer path)
// 5 / inc 2, HalfExpand -> 6
TCHECK_EQ(roundNumberToIncrementInt128(Int128(5), Int128(2), RoundingMode::HalfExpand), Int128(6), "roundInt128: 5 inc2 HalfExpand");
// 5 / inc 2, HalfTrunc -> 4
TCHECK_EQ(roundNumberToIncrementInt128(Int128(5), Int128(2), RoundingMode::HalfTrunc), Int128(4), "roundInt128: 5 inc2 HalfTrunc");
// 4 / inc 2, HalfEven -> 4
TCHECK_EQ(roundNumberToIncrementInt128(Int128(4), Int128(2), RoundingMode::HalfEven), Int128(4), "roundInt128: 4 inc2 HalfEven");
// 6 / inc 2, HalfEven -> 6
TCHECK_EQ(roundNumberToIncrementInt128(Int128(6), Int128(2), RoundingMode::HalfEven), Int128(6), "roundInt128: 6 inc2 HalfEven");
// Nanoseconds: 1500000000 / inc 1000000000 (1s), HalfExpand -> 2000000000
Int128 ns = Int128(1500000000LL);
Int128 inc = Int128(1000000000LL);
TCHECK_EQ(roundNumberToIncrementInt128(ns, inc, RoundingMode::HalfExpand), Int128(2000000000LL), "roundInt128: 1.5s HalfExpand");
// temporal_rs: duration rounding 25h with inc=1day (86400s = 86400000000000ns)
// 25h in ns = 90000000000000, inc = 86400000000000, Trunc -> 86400000000000
Int128 h25 = Int128(90000000000000LL);
Int128 day = Int128(86400000000000LL);
TCHECK_EQ(roundNumberToIncrementInt128(h25, day, RoundingMode::Trunc), day, "roundInt128: 25h Trunc to 1day");
// Floor same result
TCHECK_EQ(roundNumberToIncrementInt128(h25, day, RoundingMode::Floor), day, "roundInt128: 25h Floor to 1day");
}
static void testMaximumRoundingIncrement()
{
// temporal_rs: maximum_temporal_duration_rounding_increment
TCHECK_TRUE(!maximumRoundingIncrement(TemporalUnit::Year).has_value(), "maxIncrement: Year = unlimited");
TCHECK_TRUE(!maximumRoundingIncrement(TemporalUnit::Month).has_value(), "maxIncrement: Month = unlimited");
TCHECK_TRUE(!maximumRoundingIncrement(TemporalUnit::Week).has_value(), "maxIncrement: Week = unlimited");
TCHECK_TRUE(!maximumRoundingIncrement(TemporalUnit::Day).has_value(), "maxIncrement: Day = unlimited");
TCHECK_EQ(maximumRoundingIncrement(TemporalUnit::Hour).value_or(0), 24u, "maxIncrement: Hour = 24");
TCHECK_EQ(maximumRoundingIncrement(TemporalUnit::Minute).value_or(0), 60u, "maxIncrement: Minute = 60");
TCHECK_EQ(maximumRoundingIncrement(TemporalUnit::Second).value_or(0), 60u, "maxIncrement: Second = 60");
TCHECK_EQ(maximumRoundingIncrement(TemporalUnit::Millisecond).value_or(0), 1000u, "maxIncrement: Millisecond = 1000");
TCHECK_EQ(maximumRoundingIncrement(TemporalUnit::Microsecond).value_or(0), 1000u, "maxIncrement: Microsecond = 1000");
TCHECK_EQ(maximumRoundingIncrement(TemporalUnit::Nanosecond).value_or(0), 1000u, "maxIncrement: Nanosecond = 1000");
}
// ---------------------------------------------------------------------------
// DurationArithmetic tests — mirrors temporal_rs src/builtins/core/duration.rs
// ---------------------------------------------------------------------------
static void testTimeDurationFromComponents()
{
// temporal_rs: TimeDuration::from_components
// 1h = 3600000000000 ns
Int128 h1 = timeDurationFromComponents(1, 0, 0, 0, 0, 0);
TCHECK_EQ(h1, Int128(3600000000000LL), "timeDuration: 1h");
// 1m = 60000000000 ns
Int128 m1 = timeDurationFromComponents(0, 1, 0, 0, 0, 0);
TCHECK_EQ(m1, Int128(60000000000LL), "timeDuration: 1m");
// 1s = 1000000000 ns
Int128 s1 = timeDurationFromComponents(0, 0, 1, 0, 0, 0);
TCHECK_EQ(s1, Int128(1000000000LL), "timeDuration: 1s");
// 1ms = 1000000 ns
Int128 ms1 = timeDurationFromComponents(0, 0, 0, 1, 0, 0);
TCHECK_EQ(ms1, Int128(1000000LL), "timeDuration: 1ms");
// 1µs = 1000 ns
Int128 us1 = timeDurationFromComponents(0, 0, 0, 0, 1, 0);
TCHECK_EQ(us1, Int128(1000LL), "timeDuration: 1µs");
// 1ns
Int128 ns1 = timeDurationFromComponents(0, 0, 0, 0, 0, 1);
TCHECK_EQ(ns1, Int128(1LL), "timeDuration: 1ns");
// Combined: 1h2m3s = 3723000000000 ns
Int128 combined = timeDurationFromComponents(1, 2, 3, 0, 0, 0);
TCHECK_EQ(combined, Int128(3723000000000LL), "timeDuration: 1h2m3s");
// 25h = 90000000000000 ns
Int128 h25 = timeDurationFromComponents(25, 0, 0, 0, 0, 0);
TCHECK_EQ(h25, Int128(90000000000000LL), "timeDuration: 25h");
}
static void testDurationSign()
{
// temporal_rs: Duration::sign
ISO8601::Duration pos(1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
TCHECK_EQ(durationSign(pos), 1, "durationSign: positive");
ISO8601::Duration neg(-1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
TCHECK_EQ(durationSign(neg), -1, "durationSign: negative");
ISO8601::Duration zero;
TCHECK_EQ(durationSign(zero), 0, "durationSign: zero");
// Mixed field signs -> should not occur in valid durations, but sign uses first nonzero
ISO8601::Duration negHours(0, 0, 0, 0, -5, 0, 0, 0, 0, 0);
TCHECK_EQ(durationSign(negHours), -1, "durationSign: negative hours");
}
static void testLargestSubduration()
{
// temporal_rs: Duration::default_largest_unit
ISO8601::Duration d1(1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
TCHECK_EQ(largestSubduration(d1), TemporalUnit::Year, "largestSub: years");
ISO8601::Duration d2(0, 2, 0, 0, 0, 0, 0, 0, 0, 0);
TCHECK_EQ(largestSubduration(d2), TemporalUnit::Month, "largestSub: months");
ISO8601::Duration d3(0, 0, 0, 0, 3, 0, 0, 0, 0, 0);
TCHECK_EQ(largestSubduration(d3), TemporalUnit::Hour, "largestSub: hours");
ISO8601::Duration d4(0, 0, 0, 0, 0, 0, 0, 0, 0, 5);
TCHECK_EQ(largestSubduration(d4), TemporalUnit::Nanosecond, "largestSub: nanoseconds");
// Zero duration -> Nanosecond (first nonzero not found, returns last)
ISO8601::Duration d5;
TCHECK_EQ(largestSubduration(d5), TemporalUnit::Nanosecond, "largestSub: zero");
}
static void testAdjustDateDurationRecord()
{
// temporal_rs: AdjustDateDurationRecord
ISO8601::Duration base(2, 3, 1, 5, 0, 0, 0, 0, 0, 0);
// Override days only
auto r1 = adjustDateDurationRecord(base, 10, std::nullopt, std::nullopt);
TCHECK_TRUE(r1.has_value(), "adjustDateDur: days override ok");
TCHECK_EQ(static_cast<int64_t>(r1->years()), 2LL, "adjustDateDur: years preserved");
TCHECK_EQ(static_cast<int64_t>(r1->months()), 3LL, "adjustDateDur: months preserved");
TCHECK_EQ(static_cast<int64_t>(r1->days()), 10LL, "adjustDateDur: days overridden");
// Override weeks
auto r2 = adjustDateDurationRecord(base, 5, 2, std::nullopt);
TCHECK_TRUE(r2.has_value(), "adjustDateDur: weeks override ok");
TCHECK_EQ(static_cast<int64_t>(r2->weeks()), 2LL, "adjustDateDur: weeks overridden");
// Mixed signs -> invalid, should error
auto r3 = adjustDateDurationRecord(base, -10, std::nullopt, std::nullopt);
TCHECK_TRUE(!r3.has_value(), "adjustDateDur: mixed sign rejected");
// Day-magnitude limit. isValidDuration enforces |normalizedSeconds| < 2^53 which, for a
// date-only Duration, reduces to |days × 86400| < 2^53. The largest `days` that satisfies
// this is floor((2^53 - 1) / 86400) = 104249991374; one beyond that rejects.
ISO8601::Duration zeroBase(0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
constexpr int64_t maxValidDays = 104249991374LL;
auto rMax = adjustDateDurationRecord(zeroBase, maxValidDays, std::nullopt, std::nullopt);
TCHECK_TRUE(rMax.has_value(), "adjustDateDur: max valid days accepted");
auto rOver = adjustDateDurationRecord(zeroBase, maxValidDays + 1, std::nullopt, std::nullopt);
TCHECK_TRUE(!rOver.has_value(), "adjustDateDur: days past 2^53/86400 rejected");
// Symmetric for negative.
auto rMinNeg = adjustDateDurationRecord(zeroBase, -maxValidDays, std::nullopt, std::nullopt);
TCHECK_TRUE(rMinNeg.has_value(), "adjustDateDur: negative max valid days accepted");
auto rOverNeg = adjustDateDurationRecord(zeroBase, -(maxValidDays + 1), std::nullopt, std::nullopt);
TCHECK_TRUE(!rOverNeg.has_value(), "adjustDateDur: negative days past -2^53/86400 rejected");
// Years/months/weeks 2^32 cap (isValidDuration step 3-5: |y|,|mo|,|w| < 2^32).
constexpr int64_t maxField = (static_cast<int64_t>(1) << 32) - 1;
auto rMaxY = adjustDateDurationRecord(ISO8601::Duration(maxField, 0, 0, 0, 0, 0, 0, 0, 0, 0), 0, std::nullopt, std::nullopt);
TCHECK_TRUE(rMaxY.has_value(), "adjustDateDur: years at 2^32-1 accepted");
auto rOverY = adjustDateDurationRecord(ISO8601::Duration(static_cast<int64_t>(1) << 32, 0, 0, 0, 0, 0, 0, 0, 0, 0), 0, std::nullopt, std::nullopt);
TCHECK_TRUE(!rOverY.has_value(), "adjustDateDur: years at 2^32 rejected");
auto rOverMo = adjustDateDurationRecord(zeroBase, 0, std::nullopt, static_cast<int64_t>(1) << 32);
TCHECK_TRUE(!rOverMo.has_value(), "adjustDateDur: months at 2^32 rejected");
auto rOverW = adjustDateDurationRecord(zeroBase, 0, static_cast<int64_t>(1) << 32, std::nullopt);
TCHECK_TRUE(!rOverW.has_value(), "adjustDateDur: weeks at 2^32 rejected");
}
// ---------------------------------------------------------------------------
// CalendarArithmetic tests — mirrors temporal_rs src/builtins/core/calendar.rs
// ---------------------------------------------------------------------------
static void testCalendarDateAdd()
{
// ISO8601 path only (no ICU needed)
// temporal_rs: Calendar::date_add (iso8601)
// 1976-11-18 + P43Y = 2019-11-18
auto r1 = calendarDateAdd({ 1976, 11, 18 }, ISO8601::Duration(43, 0, 0, 0, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
TCHECK_TRUE(r1.has_value(), "calendarDateAdd: +43y ok");
TCHECK_EQ(r1->year(), 2019, "calendarDateAdd: +43y year");
// 1976-11-18 + P-43Y = 1933-11-18
auto r2 = calendarDateAdd({ 1976, 11, 18 }, ISO8601::Duration(-43, 0, 0, 0, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
TCHECK_TRUE(r2.has_value(), "calendarDateAdd: -43y ok");
TCHECK_EQ(r2->year(), 1933, "calendarDateAdd: -43y year");
// End-of-month constrain: 2020-01-31 + P1M = 2020-02-29 (leap year)
auto r3 = calendarDateAdd({ 2020, 1, 31 }, ISO8601::Duration(0, 1, 0, 0, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
TCHECK_TRUE(r3.has_value(), "calendarDateAdd: eom constrain ok");
TCHECK_EQ(r3->month(), 2u, "calendarDateAdd: eom month");
TCHECK_EQ(r3->day(), 29u, "calendarDateAdd: eom day");
// Weeks: 1976-11-18 + P2W = 1976-12-02
auto r4 = calendarDateAdd({ 1976, 11, 18 }, ISO8601::Duration(0, 0, 2, 0, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
TCHECK_TRUE(r4.has_value(), "calendarDateAdd: +2w ok");
TCHECK_EQ(r4->month(), 12u, "calendarDateAdd: +2w month");
TCHECK_EQ(r4->day(), 2u, "calendarDateAdd: +2w day");
}
static void testCalendarDateUntil()
{
// ISO8601 path only — mirrors temporal_rs: Calendar::date_until + date_until_largest_year
// 1969-07-24 until 1996-03-03 in days = 9719
auto r1 = diffISODate({ 1969, 7, 24 }, { 1996, 3, 3 }, TemporalUnit::Day);
TCHECK_EQ(static_cast<int64_t>(r1.days()), 9719LL, "calendarDateUntil: 9719 days");
// Same date -> zero
auto r2 = diffISODate({ 2020, 6, 15 }, { 2020, 6, 15 }, TemporalUnit::Day);
TCHECK_EQ(static_cast<int64_t>(r2.days()), 0LL, "calendarDateUntil: same date");
// 1969-07-24 until 1969-10-05 in months = 2m11d
auto r3 = diffISODate({ 1969, 7, 24 }, { 1969, 10, 5 }, TemporalUnit::Month);
TCHECK_EQ(static_cast<int64_t>(r3.months()), 2LL, "calendarDateUntil: 2 months");
// Negative: later until earlier
auto r4 = diffISODate({ 1996, 3, 3 }, { 1969, 7, 24 }, TemporalUnit::Day);
TCHECK_EQ(static_cast<int64_t>(r4.days()), -9719LL, "calendarDateUntil: -9719 days");
// temporal_rs: date_until_largest_year — full ISO8601 table
// Each entry: (one, two, (years, months, weeks, days))
struct DateUntilCase {
ISO8601::PlainDate one;
ISO8601::PlainDate two;
int64_t years, months, days;
};
static const DateUntilCase cases[] = {
{ { 2021, 7, 16 }, { 2021, 7, 16 }, 0, 0, 0 }, // same
{ { 2021, 7, 16 }, { 2021, 7, 17 }, 0, 0, 1 }, // +1d
{ { 2021, 7, 16 }, { 2021, 7, 23 }, 0, 0, 7 }, // +7d
{ { 2021, 7, 16 }, { 2021, 8, 16 }, 0, 1, 0 }, // +1m
{ { 2020, 12, 16 }, { 2021, 1, 16 }, 0, 1, 0 }, // month wrap
{ { 2021, 1, 5 }, { 2021, 2, 5 }, 0, 1, 0 }, // +1m
{ { 2021, 1, 7 }, { 2021, 3, 7 }, 0, 2, 0 }, // +2m
{ { 2021, 7, 16 }, { 2021, 8, 17 }, 0, 1, 1 }, // +1m1d
{ { 2021, 7, 16 }, { 2021, 8, 13 }, 0, 0, 28 }, // sub-month days
{ { 2021, 7, 16 }, { 2021, 9, 16 }, 0, 2, 0 }, // +2m
{ { 2021, 7, 16 }, { 2022, 7, 16 }, 1, 0, 0 }, // exactly 1y
{ { 2021, 7, 16 }, { 2031, 7, 16 }, 10, 0, 0 }, // exactly 10y
{ { 2021, 7, 16 }, { 2022, 7, 19 }, 1, 0, 3 }, // 1y3d
{ { 2021, 7, 16 }, { 2022, 9, 19 }, 1, 2, 3 }, // 1y2m3d
{ { 2021, 7, 16 }, { 2031, 12, 16 }, 10, 5, 0 }, // 10y5m
{ { 1997, 12, 16 }, { 2021, 7, 16 }, 23, 7, 0 }, // large: 23y7m
{ { 1997, 7, 16 }, { 2021, 7, 16 }, 24, 0, 0 }, // large: 24y
{ { 1997, 7, 16 }, { 2021, 7, 15 }, 23, 11, 29 }, // just under 24y
{ { 1997, 6, 16 }, { 2021, 6, 15 }, 23, 11, 30 }, // just under 24y
{ { 1960, 2, 16 }, { 2020, 3, 16 }, 60, 1, 0 }, // 60y1m
{ { 1960, 2, 16 }, { 2021, 3, 15 }, 61, 0, 27 }, // 61y27d
{ { 1960, 2, 16 }, { 2020, 3, 15 }, 60, 0, 28 }, // 60y28d
{ { 2021, 3, 30 }, { 2021, 7, 16 }, 0, 3, 16 }, // 3m16d
{ { 2020, 3, 30 }, { 2021, 7, 16 }, 1, 3, 16 }, // 1y3m16d
{ { 1960, 3, 30 }, { 2021, 7, 16 }, 61, 3, 16 }, // 61y3m16d
{ { 2019, 12, 30 }, { 2021, 7, 16 }, 1, 6, 16 }, // 1y6m16d
{ { 2020, 12, 30 }, { 2021, 7, 16 }, 0, 6, 16 }, // 6m16d
{ { 1997, 12, 30 }, { 2021, 7, 16 }, 23, 6, 16 }, // 23y6m16d
{ { 1, 12, 25 }, { 2021, 7, 16 }, 2019, 6, 21 }, // ancient date
{ { 2019, 12, 30 }, { 2021, 3, 5 }, 1, 2, 5 }, // 1y2m5d
// Negative cases
{ { 2021, 7, 17 }, { 2021, 7, 16 }, 0, 0, -1 },
{ { 2021, 7, 23 }, { 2021, 7, 16 }, 0, 0, -7 },
{ { 2021, 8, 16 }, { 2021, 7, 16 }, 0, -1, 0 },
{ { 2021, 1, 16 }, { 2020, 12, 16 }, 0, -1, 0 },
{ { 2021, 2, 5 }, { 2021, 1, 5 }, 0, -1, 0 },
{ { 2021, 3, 7 }, { 2021, 1, 7 }, 0, -2, 0 },
{ { 2021, 8, 17 }, { 2021, 7, 16 }, 0, -1, -1 },
};
for (auto& c : cases) {
auto r = diffISODate(c.one, c.two, TemporalUnit::Year);
TCHECK_EQ(static_cast<int64_t>(r.years()), c.years, "dateUntilLargestYear: years");
TCHECK_EQ(static_cast<int64_t>(r.months()), c.months, "dateUntilLargestYear: months");
TCHECK_EQ(static_cast<int64_t>(r.days()), c.days, "dateUntilLargestYear: days");
}
}
// ---------------------------------------------------------------------------
// ISO date limit tests — mirrors temporal_rs src/iso.rs limit tests
// ---------------------------------------------------------------------------
static void testISODateLimits()
{
// Max valid ISO date for Temporal: +275760-09-13 (±1e8 epoch days)
// addDaysToISODate returns outOfRangeYear only when year exceeds the year representation limit
auto rMax = addDaysToISODate(ISO8601::PlainDate { 275760, 9, 13 }, 0);
TCHECK_EQ(rMax.year(), 275760, "limits: max date year");
TCHECK_EQ(rMax.month(), 9u, "limits: max date month");
TCHECK_EQ(rMax.day(), 13u, "limits: max date day");
// Min valid ISO date: -271821-04-19
auto rMin = addDaysToISODate(ISO8601::PlainDate { -271821, 4, 19 }, 0);
TCHECK_EQ(rMin.year(), -271821, "limits: min date year");
TCHECK_EQ(rMin.month(), 4u, "limits: min date month");
TCHECK_EQ(rMin.day(), 19u, "limits: min date day");
// Unix epoch: 1970-01-01
auto rEpoch = addDaysToISODate(ISO8601::PlainDate { 1970, 1, 1 }, 0);
TCHECK_EQ(rEpoch.year(), 1970, "limits: epoch year");
TCHECK_EQ(rEpoch.month(), 1u, "limits: epoch month");
TCHECK_EQ(rEpoch.day(), 1u, "limits: epoch day");
// Day before epoch: 1969-12-31
auto rEpochMinus1 = addDaysToISODate(ISO8601::PlainDate { 1969, 12, 31 }, 0);
TCHECK_EQ(rEpochMinus1.year(), 1969, "limits: epoch-1 year");
TCHECK_EQ(rEpochMinus1.month(), 12u, "limits: epoch-1 month");
TCHECK_EQ(rEpochMinus1.day(), 31u, "limits: epoch-1 day");
// isoDateAdd past Temporal max -> error (±1e8 days limit)
// Max date + P1D exceeds the epoch day limit
auto rOverMax = isoDateAdd({ 275760, 9, 13 }, ISO8601::Duration(0, 0, 0, 1, 0, 0, 0, 0, 0, 0), TemporalOverflow::Reject);
TCHECK_TRUE(!rOverMax.has_value(), "limits: isoDateAdd max+1d rejects");
// Min date - P1D exceeds minimum
auto rUnderMin = isoDateAdd({ -271821, 4, 19 }, ISO8601::Duration(0, 0, 0, -1, 0, 0, 0, 0, 0, 0), TemporalOverflow::Reject);
TCHECK_TRUE(!rUnderMin.has_value(), "limits: isoDateAdd min-1d rejects");
// regulateISODate validates month/day range (not Temporal epoch limits)
auto rRegValid = regulateISODate(275760, 9, 13, TemporalOverflow::Reject);
TCHECK_TRUE(rRegValid.has_value(), "limits: regulate 275760-09-13 ok");
auto rRegBadMonth = regulateISODate(2020, 13, 1, TemporalOverflow::Reject);
TCHECK_TRUE(!rRegBadMonth.has_value(), "limits: regulate month 13 rejects");
}
// ---------------------------------------------------------------------------
// Negative number rounding — mirrors temporal_rs src/rounding.rs tests
// ---------------------------------------------------------------------------
static void testNegativeRounding()
{
// temporal_rs: test_basic_rounding_cases (negative values)
// -101 / 10
TCHECK_EQ(roundNumberToIncrementDouble(-101.0, 10.0, RoundingMode::Ceil), -100.0, "negRound: -101 inc10 Ceil");
TCHECK_EQ(roundNumberToIncrementDouble(-101.0, 10.0, RoundingMode::Floor), -110.0, "negRound: -101 inc10 Floor");
TCHECK_EQ(roundNumberToIncrementDouble(-101.0, 10.0, RoundingMode::Expand), -110.0, "negRound: -101 inc10 Expand");
TCHECK_EQ(roundNumberToIncrementDouble(-101.0, 10.0, RoundingMode::Trunc), -100.0, "negRound: -101 inc10 Trunc");
// -105 / 10 (midpoint)
TCHECK_EQ(roundNumberToIncrementDouble(-105.0, 10.0, RoundingMode::HalfCeil), -100.0, "negRound: -105 HalfCeil");
TCHECK_EQ(roundNumberToIncrementDouble(-105.0, 10.0, RoundingMode::HalfFloor), -110.0, "negRound: -105 HalfFloor");
TCHECK_EQ(roundNumberToIncrementDouble(-105.0, 10.0, RoundingMode::HalfExpand), -110.0, "negRound: -105 HalfExpand");
TCHECK_EQ(roundNumberToIncrementDouble(-105.0, 10.0, RoundingMode::HalfTrunc), -100.0, "negRound: -105 HalfTrunc");
TCHECK_EQ(roundNumberToIncrementDouble(-105.0, 10.0, RoundingMode::HalfEven), -100.0, "negRound: -105 HalfEven (even=10)");
// -115 / 10: HalfEven -> -120 (even=12)
TCHECK_EQ(roundNumberToIncrementDouble(-115.0, 10.0, RoundingMode::HalfEven), -120.0, "negRound: -115 HalfEven (even=12)");
// -107 / 10 (not midpoint)
TCHECK_EQ(roundNumberToIncrementDouble(-107.0, 10.0, RoundingMode::Ceil), -100.0, "negRound: -107 Ceil");
TCHECK_EQ(roundNumberToIncrementDouble(-107.0, 10.0, RoundingMode::Floor), -110.0, "negRound: -107 Floor");
// Int128 negative rounding
TCHECK_EQ(roundNumberToIncrementInt128(Int128(-101), Int128(10), RoundingMode::Ceil), Int128(-100), "negRoundI128: Ceil");
TCHECK_EQ(roundNumberToIncrementInt128(Int128(-101), Int128(10), RoundingMode::Floor), Int128(-110), "negRoundI128: Floor");
TCHECK_EQ(roundNumberToIncrementInt128(Int128(-105), Int128(10), RoundingMode::HalfExpand), Int128(-110), "negRoundI128: HalfExpand midpoint");
TCHECK_EQ(roundNumberToIncrementInt128(Int128(-105), Int128(10), RoundingMode::HalfTrunc), Int128(-100), "negRoundI128: HalfTrunc midpoint");
}
// ---------------------------------------------------------------------------
// roundNumberToIncrementAsIfPositive — mirrors temporal_rs round_as_if_positive
// ---------------------------------------------------------------------------
static void testRoundAsIfPositive()
{
// roundNumberToIncrementAsIfPositive treats negative x as positive for rounding direction.
// x=-107 inc=10: Trunc→-110 (toward -∞ when treated positive), Expand→-100.
TCHECK_EQ(roundNumberToIncrementAsIfPositive(Int128(-107), Int128(10), RoundingMode::Trunc), Int128(-110), "asIfPos: -107 Trunc=-110");
TCHECK_EQ(roundNumberToIncrementAsIfPositive(Int128(-107), Int128(10), RoundingMode::Expand), Int128(-100), "asIfPos: -107 Expand=-100");
TCHECK_EQ(roundNumberToIncrementAsIfPositive(Int128(-107), Int128(10), RoundingMode::Ceil), Int128(-100), "asIfPos: -107 Ceil=-100");
TCHECK_EQ(roundNumberToIncrementAsIfPositive(Int128(-107), Int128(10), RoundingMode::Floor), Int128(-110), "asIfPos: -107 Floor=-110");
// Positive values: same as regular roundNumberToIncrementInt128
TCHECK_EQ(roundNumberToIncrementAsIfPositive(Int128(107), Int128(10), RoundingMode::Trunc), Int128(100), "asIfPos: 107 Trunc=100");
TCHECK_EQ(roundNumberToIncrementAsIfPositive(Int128(107), Int128(10), RoundingMode::Expand), Int128(110), "asIfPos: 107 Expand=110");
// Zero is unchanged
TCHECK_EQ(roundNumberToIncrementAsIfPositive(Int128(0), Int128(10), RoundingMode::HalfExpand), Int128(0), "asIfPos: 0 = 0");
}
// ---------------------------------------------------------------------------
// negateTemporalRoundingMode — mirrors temporal_rs RoundingMode::negate
// ---------------------------------------------------------------------------
static void testNegateRoundingMode()
{
// temporal_rs: RoundingMode::negate
TCHECK_EQ(static_cast<int>(negateTemporalRoundingMode(RoundingMode::Floor)), static_cast<int>(RoundingMode::Ceil), "negate: Floor->Ceil");
TCHECK_EQ(static_cast<int>(negateTemporalRoundingMode(RoundingMode::Ceil)), static_cast<int>(RoundingMode::Floor), "negate: Ceil->Floor");
TCHECK_EQ(static_cast<int>(negateTemporalRoundingMode(RoundingMode::HalfFloor)), static_cast<int>(RoundingMode::HalfCeil), "negate: HalfFloor->HalfCeil");
TCHECK_EQ(static_cast<int>(negateTemporalRoundingMode(RoundingMode::HalfCeil)), static_cast<int>(RoundingMode::HalfFloor), "negate: HalfCeil->HalfFloor");
// Symmetric modes unchanged
TCHECK_EQ(static_cast<int>(negateTemporalRoundingMode(RoundingMode::Trunc)), static_cast<int>(RoundingMode::Trunc), "negate: Trunc unchanged");
TCHECK_EQ(static_cast<int>(negateTemporalRoundingMode(RoundingMode::Expand)), static_cast<int>(RoundingMode::Expand), "negate: Expand unchanged");
TCHECK_EQ(static_cast<int>(negateTemporalRoundingMode(RoundingMode::HalfExpand)), static_cast<int>(RoundingMode::HalfExpand), "negate: HalfExpand unchanged");
TCHECK_EQ(static_cast<int>(negateTemporalRoundingMode(RoundingMode::HalfTrunc)), static_cast<int>(RoundingMode::HalfTrunc), "negate: HalfTrunc unchanged");
TCHECK_EQ(static_cast<int>(negateTemporalRoundingMode(RoundingMode::HalfEven)), static_cast<int>(RoundingMode::HalfEven), "negate: HalfEven unchanged");
}
// ---------------------------------------------------------------------------
// Duration balancing — mirrors temporal_rs balance tests
// ---------------------------------------------------------------------------
static void testDurationBalancing()
{
// temporal_rs: balance_days_up_to_both_years_and_months
// 2020-01-01 + 11M = 2020-12-01, then + 396D = 2022-01-01
auto r = isoDateAdd({ 2020, 1, 1 }, ISO8601::Duration(0, 11, 0, 396, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
TCHECK_TRUE(r.has_value(), "balance: 11m+396d from 2020-01-01 ok");
TCHECK_EQ(r->year(), 2022, "balance: 11m+396d year=2022");
TCHECK_EQ(r->month(), 1u, "balance: 11m+396d month=1");
// temporal_rs: negative balance
// -60h = -3d (using timeDurationFromComponents)
Int128 neg60h = timeDurationFromComponents(-60, 0, 0, 0, 0, 0);
TCHECK_EQ(neg60h, Int128(-216000000000000LL), "balance: -60h in ns");
// Subsecond balancing: -999ms + -999999µs + -999999999ns = -2.998998999s
Int128 negMs = timeDurationFromComponents(0, 0, 0, -999, -999999, -999999999);
// Total = -999*1e6 - 999999*1e3 - 999999999 = -999000000 - 999999000 - 999999999 = -2998998999 ns
TCHECK_EQ(negMs, Int128(-2998998999LL), "balance: -999ms-999999µs-999999999ns");
}
// ---------------------------------------------------------------------------
// isoDateAdd boundary/error cases
// ---------------------------------------------------------------------------
static void testISODateAddBoundaries()
{
// temporal_rs: date_add_limits — adding to max date
// Max date + P1D -> error (out of range)
auto rOverMax = isoDateAdd({ 275760, 9, 13 }, ISO8601::Duration(0, 0, 0, 1, 0, 0, 0, 0, 0, 0), TemporalOverflow::Reject);
TCHECK_TRUE(!rOverMax.has_value(), "addBounds: max+1d rejects");
// Min date - P1D -> error
auto rUnderMin = isoDateAdd({ -271821, 4, 19 }, ISO8601::Duration(0, 0, 0, -1, 0, 0, 0, 0, 0, 0), TemporalOverflow::Reject);
TCHECK_TRUE(!rUnderMin.has_value(), "addBounds: min-1d rejects");
// Max date itself is valid
auto rMax = isoDateAdd({ 275760, 9, 12 }, ISO8601::Duration(0, 0, 0, 1, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
TCHECK_TRUE(rMax.has_value(), "addBounds: max date ok");
TCHECK_EQ(rMax->year(), 275760, "addBounds: max year");
TCHECK_EQ(rMax->day(), 13u, "addBounds: max day");
// Constrain: exceed max -> constrain clamps
auto rConstrain = isoDateAdd({ 275760, 9, 13 }, ISO8601::Duration(0, 1, 0, 0, 0, 0, 0, 0, 0, 0), TemporalOverflow::Constrain);
// +1M from 275760-09-13 would be 275760-10-13 which exceeds max -> out of range
TCHECK_TRUE(!rConstrain.has_value(), "addBounds: exceed max+1M errors");
}
// ---------------------------------------------------------------------------
// New tests — ISOArithmetic, DurationArithmetic, Rounding, Instant, Calendar,
// TimeZone, PlainDateTime
// ---------------------------------------------------------------------------
static void testBalanceISOYearMonth()
{
// Month overflow: 2021-13 -> 2022-01
auto r1 = balanceISOYearMonth(2021, 13);
TCHECK_EQ(r1.year(), 2022, "balanceYM: 2021m13 year");
TCHECK_EQ(r1.month(), 1u, "balanceYM: 2021m13 month");
// Month underflow: 2021-00 -> 2020-12
auto r2 = balanceISOYearMonth(2021, 0);
TCHECK_EQ(r2.year(), 2020, "balanceYM: 2021m0 year");
TCHECK_EQ(r2.month(), 12u, "balanceYM: 2021m0 month");
// No-op: 2020-06 -> 2020-06
auto r3 = balanceISOYearMonth(2020, 6);
TCHECK_EQ(r3.year(), 2020, "balanceYM: identity year");
TCHECK_EQ(r3.month(), 6u, "balanceYM: identity month");
// Large overflow: 2021-25 -> 2023-01
auto r4 = balanceISOYearMonth(2021, 25);
TCHECK_EQ(r4.year(), 2023, "balanceYM: 2021m25 year");
TCHECK_EQ(r4.month(), 1u, "balanceYM: 2021m25 month");
}
static void testISOTimeCompare()
{
// Equal
TCHECK_EQ(isoTimeCompare({ 12, 0, 0, 0, 0, 0 }, { 12, 0, 0, 0, 0, 0 }), 0, "timeCompare: equal");
// Hour difference
TCHECK_EQ(isoTimeCompare({ 14, 0, 0, 0, 0, 0 }, { 12, 0, 0, 0, 0, 0 }), 1, "timeCompare: later hour");
TCHECK_EQ(isoTimeCompare({ 12, 0, 0, 0, 0, 0 }, { 14, 0, 0, 0, 0, 0 }), -1, "timeCompare: earlier hour");
// Nanosecond difference
ISO8601::PlainTime t1(0, 0, 0, 0, 0, 1), t2(0, 0, 0, 0, 0, 0);
TCHECK_EQ(isoTimeCompare(t1, t2), 1, "timeCompare: 1ns later");
TCHECK_EQ(isoTimeCompare(t2, t1), -1, "timeCompare: 1ns earlier");
// Max time vs min time
ISO8601::PlainTime maxT(23, 59, 59, 999, 999, 999), minT(0, 0, 0, 0, 0, 0);
TCHECK_EQ(isoTimeCompare(maxT, minT), 1, "timeCompare: max > min");
}
static void testApplyUnsignedRoundingMode()
{
// x between r1 and r2 — direction modes
TCHECK_EQ(applyUnsignedRoundingMode(Int128(13), Int128(10), Int128(1), Int128(2), UnsignedRoundingMode::Zero), Int128(1), "applyURM: 13/10 Zero");
TCHECK_EQ(applyUnsignedRoundingMode(Int128(13), Int128(10), Int128(1), Int128(2), UnsignedRoundingMode::Infinity), Int128(2), "applyURM: 13/10 Inf");
// x == r1 (exact lower bound)
TCHECK_EQ(applyUnsignedRoundingMode(Int128(10), Int128(10), Int128(1), Int128(2), UnsignedRoundingMode::Zero), Int128(1), "applyURM: exact=r1");
// HalfZero at midpoint
TCHECK_EQ(applyUnsignedRoundingMode(Int128(3), Int128(2), Int128(1), Int128(2), UnsignedRoundingMode::HalfZero), Int128(1), "applyURM: 3/2 HalfZero");
TCHECK_EQ(applyUnsignedRoundingMode(Int128(3), Int128(2), Int128(1), Int128(2), UnsignedRoundingMode::HalfInfinity), Int128(2), "applyURM: 3/2 HalfInf");
// HalfEven: 2.5 -> 2 (even lower), 3.5 -> 4 (even upper)
TCHECK_EQ(applyUnsignedRoundingMode(Int128(5), Int128(2), Int128(2), Int128(3), UnsignedRoundingMode::HalfEven), Int128(2), "applyURM: 5/2 HalfEven->2");
TCHECK_EQ(applyUnsignedRoundingMode(Int128(7), Int128(2), Int128(3), Int128(4), UnsignedRoundingMode::HalfEven), Int128(4), "applyURM: 7/2 HalfEven->4");
}
static void testNegateDuration()
{
ISO8601::Duration d(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
auto neg = negateDuration(d);
TCHECK_EQ(static_cast<int64_t>(neg.years()), -1LL, "negate: years");
TCHECK_EQ(static_cast<int64_t>(neg.months()), -2LL, "negate: months");
TCHECK_EQ(static_cast<int64_t>(neg.days()), -4LL, "negate: days");
TCHECK_EQ(static_cast<int64_t>(neg.hours()), -5LL, "negate: hours");
// Double negation = identity
auto back = negateDuration(neg);
TCHECK_EQ(static_cast<int64_t>(back.years()), 1LL, "negate: double neg years");
// Zero unchanged
ISO8601::Duration zero;
auto negZero = negateDuration(zero);
TCHECK_EQ(durationSign(negZero), 0, "negate: zero");
}
static void testAbsDuration()
{
// Positive unchanged
ISO8601::Duration pos(1, 2, 0, 4, 0, 0, 0, 0, 0, 0);
auto absPos = absDuration(pos);
TCHECK_EQ(static_cast<int64_t>(absPos.years()), 1LL, "abs: pos years");
TCHECK_EQ(static_cast<int64_t>(absPos.days()), 4LL, "abs: pos days");
// Negative -> positive
ISO8601::Duration neg(-1, -2, 0, -4, 0, 0, 0, 0, 0, 0);
auto absNeg = absDuration(neg);
TCHECK_EQ(static_cast<int64_t>(absNeg.years()), 1LL, "abs: neg years");
TCHECK_EQ(static_cast<int64_t>(absNeg.months()), 2LL, "abs: neg months");
TCHECK_EQ(static_cast<int64_t>(absNeg.days()), 4LL, "abs: neg days");
TCHECK_EQ(durationSign(absNeg), 1, "abs: sign positive");
// Zero unchanged
ISO8601::Duration zero;
auto absZero = absDuration(zero);
TCHECK_EQ(durationSign(absZero), 0, "abs: zero");
}
static void testGetUTCEpochNanoseconds()
{
// Unix epoch = 0
auto r0 = getUTCEpochNanoseconds({ 1970, 1, 1 }, { 0, 0, 0, 0, 0, 0 });
TCHECK_EQ(r0, Int128(0LL), "utcEpoch: 1970-01-01 00:00:00 = 0");
// 1 day = 86400000000000 ns
auto r1 = getUTCEpochNanoseconds({ 1970, 1, 2 }, { 0, 0, 0, 0, 0, 0 });
TCHECK_EQ(r1, Int128(86400000000000LL), "utcEpoch: 1970-01-02 = 1 day");
// 1 second
auto r2 = getUTCEpochNanoseconds({ 1970, 1, 1 }, { 0, 0, 1, 0, 0, 0 });
TCHECK_EQ(r2, Int128(1000000000LL), "utcEpoch: 1970-01-01 00:00:01 = 1s");
// 2001-09-09T01:46:40Z = 1000000000 seconds = 1e18 ns
auto r3 = getUTCEpochNanoseconds({ 2001, 9, 9 }, { 1, 46, 40, 0, 0, 0 });
TCHECK_EQ(r3, Int128(1000000000LL) * Int128(1000000000LL), "utcEpoch: unix billion");
// Negative: 1969-12-31 = -1 day
auto r4 = getUTCEpochNanoseconds({ 1969, 12, 31 }, { 0, 0, 0, 0, 0, 0 });
TCHECK_EQ(r4, Int128(-86400000000000LL), "utcEpoch: 1969-12-31 = -1day");
}
static void testSplitTimeDuration()
{
// 25 hours = 90000000000000 ns -> 1 overflow day, 1h remainder
auto [days1, rem1] = splitTimeDuration(Int128(90000000000000LL));
TCHECK_EQ(days1, 1LL, "split: 25h = 1 overflow day");
TCHECK_EQ(rem1, Int128(3600000000000LL), "split: 25h remainder = 1h");
// Exact 1 day
auto [days2, rem2] = splitTimeDuration(Int128(86400000000000LL));
TCHECK_EQ(days2, 1LL, "split: 1day overflow");
TCHECK_EQ(rem2, Int128(0LL), "split: 1day remainder=0");
// Less than 1 day — no overflow
auto [days3, rem3] = splitTimeDuration(Int128(3600000000000LL));
TCHECK_EQ(days3, 0LL, "split: 1h no overflow");
TCHECK_EQ(rem3, Int128(3600000000000LL), "split: 1h remainder");
// Negative: -25h -> floor(-25/24) = -2, remainder = 23h = 82800000000000 ns
auto [days4, rem4] = splitTimeDuration(Int128(-90000000000000LL));
TCHECK_EQ(days4, -2LL, "split: -25h overflow=-2 (floor)");
TCHECK_EQ(rem4, Int128(82800000000000LL), "split: -25h remainder=23h");
}
static void testPlainTimeFromSubdayNs()
{
// 0 -> midnight
auto t0 = plainTimeFromSubdayNs(Int128(0));
TCHECK_EQ(t0.hour(), 0u, "ptFromNs: midnight hour");
TCHECK_EQ(t0.nanosecond(), 0u, "ptFromNs: midnight ns");
// 1 hour = 3600000000000 ns -> 01:00:00
auto t1 = plainTimeFromSubdayNs(Int128(3600000000000LL));
TCHECK_EQ(t1.hour(), 1u, "ptFromNs: 1h hour");
TCHECK_EQ(t1.minute(), 0u, "ptFromNs: 1h minute");
// 1 ns -> 00:00:00.000000001
auto t2 = plainTimeFromSubdayNs(Int128(1));
TCHECK_EQ(t2.nanosecond(), 1u, "ptFromNs: 1ns");
// 13:00:00 = 46800000000000 ns
auto t3 = plainTimeFromSubdayNs(Int128(46800000000000LL));
TCHECK_EQ(t3.hour(), 13u, "ptFromNs: 13h hour");
}
static void testAdd24HourDaysToTimeDuration()
{
// Add 1 day (86400000000000 ns) to 1h (3600000000000 ns) = 90000000000000 ns
auto r1 = add24HourDaysToTimeDuration(Int128(3600000000000LL), 1.0);
TCHECK_TRUE(r1.has_value(), "add24h: 1h+1d ok");
TCHECK_EQ(*r1, Int128(90000000000000LL), "add24h: 1h+1d = 25h");
// Add 0 days -> unchanged
auto r2 = add24HourDaysToTimeDuration(Int128(3600000000000LL), 0.0);
TCHECK_TRUE(r2.has_value(), "add24h: +0d ok");
TCHECK_EQ(*r2, Int128(3600000000000LL), "add24h: +0d unchanged");
// Negative days: 25h - 1d = 1h
auto r3 = add24HourDaysToTimeDuration(Int128(90000000000000LL), -1.0);
TCHECK_TRUE(r3.has_value(), "add24h: -1d ok");
TCHECK_EQ(*r3, Int128(3600000000000LL), "add24h: 25h-1d = 1h");
}
static void testTemporalDurationFromInternal()
{
// 4 days as time nanoseconds -> largestUnit=Day yields 4 days, 0 hours
Int128 fourDays = Int128(4LL) * Int128(86400000000000LL);
auto internal = ISO8601::InternalDuration::combineDateAndTimeDuration(ISO8601::Duration(), fourDays);
auto resultOrError = temporalDurationFromInternal(internal, TemporalUnit::Day);
TCHECK_TRUE(resultOrError.has_value(), "fromInternal: valid duration");
auto& result = *resultOrError;
TCHECK_EQ(static_cast<int64_t>(result.days()), 4LL, "fromInternal: 4d days");
TCHECK_EQ(static_cast<int64_t>(result.hours()), 0LL, "fromInternal: 4d hours=0");
// largestUnit=Hour: 4 days = 96 hours, 0 days
auto result2OrError = temporalDurationFromInternal(internal, TemporalUnit::Hour);
TCHECK_TRUE(result2OrError.has_value(), "fromInternal: valid duration 2");
auto& result2 = *result2OrError;
TCHECK_EQ(static_cast<int64_t>(result2.hours()), 96LL, "fromInternal: 96h");
TCHECK_EQ(static_cast<int64_t>(result2.days()), 0LL, "fromInternal: 96h days=0");
}
static void testCompareISODateTime()
{
ISO8601::PlainDate d1 { 2019, 1, 8 }, d2 { 2021, 9, 7 };
ISO8601::PlainTime t1 { 8, 22, 36, 0, 0, 0 }, t2 { 12, 39, 40, 0, 0, 0 };
// Equal
TCHECK_EQ(compareISODateTime(d1, t1, d1, t1), 0, "compareIDT: equal");
// Different date — earlier vs later
TCHECK_EQ(compareISODateTime(d1, t1, d2, t2), -1, "compareIDT: earlier");
TCHECK_EQ(compareISODateTime(d2, t2, d1, t1), 1, "compareIDT: later");
// Same date, different time
ISO8601::PlainTime earlyT { 8, 22, 35, 0, 0, 0 };
TCHECK_EQ(compareISODateTime(d1, earlyT, d1, t1), -1, "compareIDT: earlier time");
}
static void testMaximumInstantIncrement()
{
TCHECK_EQ(maximumInstantIncrement(TemporalUnit::Hour), 24.0, "maxInstInc: Hour=24");
TCHECK_EQ(maximumInstantIncrement(TemporalUnit::Minute), 1440.0, "maxInstInc: Minute=1440");
TCHECK_EQ(maximumInstantIncrement(TemporalUnit::Second), 86400.0, "maxInstInc: Second=86400");
TCHECK_EQ(maximumInstantIncrement(TemporalUnit::Millisecond), 8.64e7, "maxInstInc: Ms");
TCHECK_EQ(maximumInstantIncrement(TemporalUnit::Microsecond), 8.64e10, "maxInstInc: µs");
}
static void testToDateDurationRecordWithoutTime()
{
// Strip time fields, keep date fields
ISO8601::Duration d(1, 2, 0, 4, 5, 6, 7, 8, 9, 10);
auto r = toDateDurationRecordWithoutTime(d);
TCHECK_TRUE(r.has_value(), "stripTime: ok");
TCHECK_EQ(static_cast<int64_t>(r->years()), 1LL, "stripTime: years");
TCHECK_EQ(static_cast<int64_t>(r->months()), 2LL, "stripTime: months");
TCHECK_EQ(static_cast<int64_t>(r->days()), 4LL, "stripTime: days");
TCHECK_EQ(static_cast<int64_t>(r->hours()), 0LL, "stripTime: hours=0");
TCHECK_EQ(static_cast<int64_t>(r->minutes()), 0LL, "stripTime: minutes=0");
}
// ---------------------------------------------------------------------------
// totalTimeDuration — fractional unit conversion
// ---------------------------------------------------------------------------
static void testTotalTimeDuration()
{
// temporal_rs: internal nanosecond-to-unit conversion
// 3600000000000 ns = 1 hour
TCHECK_EQ(totalTimeDuration(Int128(3600000000000LL), TemporalUnit::Hour), 1.0, "totalTD: 1h");
// 86400000000000 ns = 1 day
TCHECK_EQ(totalTimeDuration(Int128(86400000000000LL), TemporalUnit::Day), 1.0, "totalTD: 1day");
// 1000000000 ns = 1 second
TCHECK_EQ(totalTimeDuration(Int128(1000000000LL), TemporalUnit::Second), 1.0, "totalTD: 1s");
// 90000000000000 ns (25h) in hours = 25.0
TCHECK_EQ(totalTimeDuration(Int128(90000000000000LL), TemporalUnit::Hour), 25.0, "totalTD: 25h");
// 1000000 ns = 1 ms
TCHECK_EQ(totalTimeDuration(Int128(1000000LL), TemporalUnit::Millisecond), 1.0, "totalTD: 1ms");
}
// ---------------------------------------------------------------------------
// toInternalDuration / toInternalDurationRecordWith24HourDays
// ---------------------------------------------------------------------------
static void testToInternalDuration()
{
// temporal_rs: internal conversion helpers
// P1DT2H -> InternalDuration with time portion = 2h in ns, date = 1 day (NOT folded)
ISO8601::Duration d(0, 0, 0, 1, 2, 0, 0, 0, 0, 0);
auto internal = toInternalDuration(d);
TCHECK_EQ(static_cast<int64_t>(internal.dateDuration().days()), 1LL, "toInternal: days=1");
TCHECK_EQ(internal.time(), Int128(7200000000000LL), "toInternal: time=2h ns");
// toInternalDurationRecordWith24HourDays: folds days into time
auto r = toInternalDurationRecordWith24HourDays(d);
TCHECK_TRUE(r.has_value(), "toInternal24h: ok");
// days folded into time: 1d + 2h = 26h = 93600000000000 ns, date part = 0 days
TCHECK_EQ(static_cast<int64_t>(r->dateDuration().days()), 0LL, "toInternal24h: days=0");
TCHECK_EQ(r->time(), Int128(93600000000000LL), "toInternal24h: time=26h");
}
// ---------------------------------------------------------------------------
// diffISODateTime — unrounded internal duration between datetimes
// ---------------------------------------------------------------------------
static void testDiffISODateTime()
{
// temporal_rs: IsoDateTime::diff (unrounded portion)
ISO8601::PlainDate d1 { 2019, 1, 8 }, d2 { 2021, 9, 7 };
ISO8601::PlainTime t1 { 8, 22, 36, 0, 0, 0 }, t2 { 12, 39, 40, 0, 0, 0 };
// 2019-01-08T08:22:36 until 2021-09-07T12:39:40, largestUnit=Day
auto r = diffISODateTime(d1, t1, d2, t2, TemporalUnit::Day);
// 973 days + 4h 17m 4s
TCHECK_EQ(static_cast<int64_t>(r.dateDuration().days()), 973LL, "diffIDT: days=973");
Int128 expected4h17m4s = timeDurationFromComponents(4, 17, 4, 0, 0, 0);
TCHECK_EQ(r.time(), expected4h17m4s, "diffIDT: time=4h17m4s");
// Same datetime -> zero
auto r2 = diffISODateTime(d1, t1, d1, t1, TemporalUnit::Day);
TCHECK_EQ(static_cast<int64_t>(r2.dateDuration().days()), 0LL, "diffIDT: same=0 days");
TCHECK_EQ(r2.time(), Int128(0LL), "diffIDT: same=0 time");
// Negative: later until earlier
auto r3 = diffISODateTime(d2, t2, d1, t1, TemporalUnit::Day);
TCHECK_EQ(static_cast<int64_t>(r3.dateDuration().days()), -973LL, "diffIDT: neg days");
}
// ---------------------------------------------------------------------------
// validateTemporalRoundingIncrement
// ---------------------------------------------------------------------------
static void testValidateTemporalRoundingIncrement()
{
// temporal_rs: RoundingIncrement::validate
// Valid: increment=1, dividend=60 (exclusive)
auto r1 = validateTemporalRoundingIncrement(1.0, 60.0, Inclusivity::Exclusive);
TCHECK_TRUE(r1.has_value(), "validate: 1 of 60 ok");
// Valid: increment=5, dividend=60 (exclusive) — 60/5=12 integer
auto r2 = validateTemporalRoundingIncrement(5.0, 60.0, Inclusivity::Exclusive);
TCHECK_TRUE(r2.has_value(), "validate: 5 of 60 ok");
// Valid: increment=60, dividend=60 (inclusive)
auto r3 = validateTemporalRoundingIncrement(60.0, 60.0, Inclusivity::Inclusive);
TCHECK_TRUE(r3.has_value(), "validate: 60 of 60 inclusive ok");
// Invalid: increment=61, dividend=60 (exclusive) — exceeds max
auto r4 = validateTemporalRoundingIncrement(61.0, 60.0, Inclusivity::Exclusive);
TCHECK_TRUE(!r4.has_value(), "validate: 61 of 60 rejects");
// Invalid: increment=60, dividend=60 (exclusive) — equal not allowed exclusive
auto r5 = validateTemporalRoundingIncrement(60.0, 60.0, Inclusivity::Exclusive);
TCHECK_TRUE(!r5.has_value(), "validate: 60 of 60 exclusive rejects");