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Demonstrate addMinutes() across DST transition adds an hour #518

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Demonstrate addMinutes() across DST transition adds an hour #518

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36 changes: 36 additions & 0 deletions tests/TestCase/DateTime/DaylightSavingsAddTest.php
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<?php

declare(strict_types=1);

Check failure on line 3 in tests/TestCase/DateTime/DaylightSavingsAddTest.php

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GitHub Actions / cs-stan / Coding Standard & Static Analysis 

Expected 0 lines before declare statement, found 1.

/**
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @copyright Copyright (c) Brian Nesbitt <brian@nesbot.com>
* @link https://cakephp.org CakePHP(tm) Project
* @license https://www.opensource.org/licenses/mit-license.php MIT License
*/

namespace Cake\Chronos\Test\TestCase\DateTime;

use Cake\Chronos\Chronos;
use Cake\Chronos\Test\TestCase\TestCase;

class DaylightSavingsAddTest extends TestCase
{
public function testDayLightSavingsTransition(): void
{
// Australia/Melbourne changes out of daylight savings 5th April 2026
$time = Chronos::parse('2026-04-05 09:00:00', 'Australia/Melbourne');

$this->assertSame('2026-04-05T09:00:00+10:00', $time->toIso8601String());
$this->assertSame('2026-04-05T00:00:00+11:00', $time->startOfDay()->toIso8601String());

$this->assertSame(600, $time->diffInMinutes($time->startOfDay()));

$this->assertSame('2026-04-05T09:00:00+10:00', $time->startOfDay()->addMinutes(600)->toIso8601String());
}
}
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