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<?php declare(strict_types=1);
/*
* This file is part of sebastian/comparator.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Comparator;
use function abs;
use function floor;
use function sprintf;
use DateInterval;
use DateTime;
use DateTimeInterface;
use DateTimeZone;
use Exception;
/**
* Compares DateTimeInterface instances for equality.
*/
class DateTimeComparator extends ObjectComparator
{
/**
* Returns whether the comparator can compare two values.
*
* @param mixed $expected The first value to compare
* @param mixed $actual The second value to compare
*
* @return bool
*/
public function accepts($expected, $actual)
{
return ($expected instanceof DateTime || $expected instanceof DateTimeInterface) &&
($actual instanceof DateTime || $actual instanceof DateTimeInterface);
}
/**
* Asserts that two values are equal.
*
* @param mixed $expected First value to compare
* @param mixed $actual Second value to compare
* @param float $delta Allowed numerical distance between two values to consider them equal
* @param bool $canonicalize Arrays are sorted before comparison when set to true
* @param bool $ignoreCase Case is ignored when set to true
* @param array $processed List of already processed elements (used to prevent infinite recursion)
*
* @throws Exception
* @throws ComparisonFailure
*/
public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = false, $ignoreCase = false, array &$processed = [])/*: void*/
{
/** @var DateTimeInterface $expected */
/** @var DateTimeInterface $actual */
$absDelta = abs($delta);
$delta = new DateInterval(sprintf('PT%dS', $absDelta));
$delta->f = $absDelta - floor($absDelta);
$actualClone = (clone $actual)
->setTimezone(new DateTimeZone('UTC'));
$expectedLower = (clone $expected)
->setTimezone(new DateTimeZone('UTC'))
->sub($delta);
$expectedUpper = (clone $expected)
->setTimezone(new DateTimeZone('UTC'))
->add($delta);
if ($actualClone < $expectedLower || $actualClone > $expectedUpper) {
throw new ComparisonFailure(
$expected,
$actual,
$this->dateTimeToString($expected),
$this->dateTimeToString($actual),
false,
'Failed asserting that two DateTime objects are equal.'
);
}
}
/**
* Returns an ISO 8601 formatted string representation of a datetime or
* 'Invalid DateTimeInterface object' if the provided DateTimeInterface was not properly
* initialized.
*/
private function dateTimeToString(DateTimeInterface $datetime): string
{
$string = $datetime->format('Y-m-d\TH:i:s.uO');
return $string ?: 'Invalid DateTimeInterface object';
}
}
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