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// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import "package:expect/expect.dart";
// Dart test program for DateTime, far away dates.
// TODO(37442): Find far-away dates with milliseconds-since-epoch values that
// are 'web' integers.
bool get supportsMicroseconds =>
new DateTime.fromMicrosecondsSinceEpoch(1).microsecondsSinceEpoch == 1;
void testFarAwayDates() {
DateTime dt =
new DateTime.fromMillisecondsSinceEpoch(1000000000000001, isUtc: true);
Expect.equals(33658, dt.year);
Expect.equals(9, dt.month);
Expect.equals(27, dt.day);
Expect.equals(1, dt.hour);
Expect.equals(46, dt.minute);
Expect.equals(40, dt.second);
Expect.equals(1, dt.millisecond);
Expect.equals(0, dt.microsecond);
dt = new DateTime.fromMillisecondsSinceEpoch(-1000000000000001, isUtc: true);
Expect.equals(-29719, dt.year);
Expect.equals(4, dt.month);
Expect.equals(5, dt.day);
Expect.equals(22, dt.hour);
Expect.equals(13, dt.minute);
Expect.equals(19, dt.second);
Expect.equals(999, dt.millisecond);
Expect.equals(0, dt.microsecond);
// Same with local zone.
dt = new DateTime.fromMillisecondsSinceEpoch(1000000000000001);
Expect.equals(33658, dt.year);
Expect.equals(9, dt.month);
Expect.equals(true, dt.day == 27 || dt.day == 26);
// Not much we can test for local hour.
Expect.equals(true, dt.hour >= 0 && dt.hour < 24);
// Timezones can have offsets down to 15 minute.
Expect.equals(true, dt.minute % 15 == 46 % 15);
Expect.equals(40, dt.second);
Expect.equals(1, dt.millisecond);
Expect.equals(0, dt.microsecond);
dt = new DateTime.fromMillisecondsSinceEpoch(-1000000000000001);
Expect.equals(-29719, dt.year);
Expect.equals(4, dt.month);
Expect.equals(true, 5 == dt.day || 6 == dt.day);
// Not much we can test for local hour.
Expect.equals(true, dt.hour >= 0 && dt.hour < 24);
// Timezones can have offsets down to 15 minute.
Expect.equals(true, dt.minute % 15 == 13);
Expect.equals(19, dt.second);
Expect.equals(999, dt.millisecond);
Expect.equals(0, dt.microsecond);
if (!supportsMicroseconds) return;
dt =
new DateTime.fromMicrosecondsSinceEpoch(1000000000000000001, isUtc: true);
Expect.equals(33658, dt.year);
Expect.equals(9, dt.month);
Expect.equals(27, dt.day);
Expect.equals(1, dt.hour);
Expect.equals(46, dt.minute);
Expect.equals(40, dt.second);
Expect.equals(0, dt.millisecond);
Expect.equals(1, dt.microsecond);
dt = new DateTime.fromMicrosecondsSinceEpoch(-1000000000000000001,
isUtc: true);
Expect.equals(-29719, dt.year);
Expect.equals(4, dt.month);
Expect.equals(5, dt.day);
Expect.equals(22, dt.hour);
Expect.equals(13, dt.minute);
Expect.equals(19, dt.second);
Expect.equals(999, dt.millisecond);
Expect.equals(999, dt.microsecond);
// Same with local zone.
dt = new DateTime.fromMicrosecondsSinceEpoch(1000000000000000001);
Expect.equals(33658, dt.year);
Expect.equals(9, dt.month);
Expect.equals(true, dt.day == 27 || dt.day == 26);
// Not much we can test for local hour.
Expect.equals(true, dt.hour >= 0 && dt.hour < 24);
// Timezones can have offsets down to 15 minute.
Expect.equals(true, dt.minute % 15 == 46 % 15);
Expect.equals(40, dt.second);
Expect.equals(0, dt.millisecond);
Expect.equals(1, dt.microsecond);
dt = new DateTime.fromMicrosecondsSinceEpoch(-1000000000000000001);
Expect.equals(-29719, dt.year);
Expect.equals(4, dt.month);
Expect.equals(true, 5 == dt.day || 6 == dt.day);
// Not much we can test for local hour.
Expect.equals(true, dt.hour >= 0 && dt.hour < 24);
// Timezones can have offsets down to 15 minute.
Expect.equals(true, dt.minute % 15 == 13);
Expect.equals(19, dt.second);
Expect.equals(999, dt.millisecond);
Expect.equals(999, dt.microsecond);
}
void main() {
testFarAwayDates();
}