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