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71 lines
2.3 KiB
71 lines
2.3 KiB
<?php
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declare(strict_types=1);
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/**
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* This file is part of the Carbon package.
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*
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* (c) Brian Nesbitt <brian@nesbot.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Tests\CarbonImmutable;
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use Carbon\CarbonImmutable as Carbon;
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use Generator;
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use PHPUnit\Framework\Attributes\DataProvider;
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use PHPUnit\Framework\Attributes\Group;
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use Tests\AbstractTestCase;
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class ModifyNearDSTChangeTest extends AbstractTestCase
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{
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/**
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* Tests transition through DST change hour in non default timezone.
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*/
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#[Group('dst')]
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#[DataProvider('dataForTransitionTests')]
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public function testTransitionInNonDefaultTimezone(string $dateString, int $addHours, string $expected): void
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{
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date_default_timezone_set('Europe/london');
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$date = Carbon::parse($dateString, 'America/New_York');
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$date = $date->addHours($addHours);
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$this->assertSame($expected, $date->format('c'));
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}
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/**
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* Tests transition through DST change hour in default timezone.
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*/
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#[Group('dst')]
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#[DataProvider('dataForTransitionTests')]
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public function testTransitionInDefaultTimezone(string $dateString, int $addHours, string $expected): void
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{
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date_default_timezone_set('America/New_York');
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$date = Carbon::parse($dateString, 'America/New_York');
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$date = $date->addHours($addHours);
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$this->assertSame($expected, $date->format('c'));
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}
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public static function dataForTransitionTests(): Generator
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{
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// arguments:
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// - Date string to Carbon::parse in America/New_York.
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// - Hours to add
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// - Resulting string in 'c' format
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// testForwardTransition
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// When standard time was about to reach 2010-03-14T02:00:00-05:00 clocks were turned forward 1 hour to
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// 2010-03-14T03:00:00-04:00 local daylight time instead
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yield [
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'2010-03-14T00:00:00',
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24,
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'2010-03-15T01:00:00-04:00',
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];
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// testBackwardTransition
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// When local daylight time was about to reach 2010-11-07T02:00:00-04:00 clocks were turned backward 1 hour
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// to 2010-11-07T01:00:00-05:00 local standard time instead
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yield ['2010-11-07T00:00:00', 24, '2010-11-07T23:00:00-05:00'];
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}
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}
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