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Edit File: ComparisonFailure.php

<?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 RuntimeException;
use SebastianBergmann\Diff\Differ;
use SebastianBergmann\Diff\Output\UnifiedDiffOutputBuilder;

final class ComparisonFailure extends RuntimeException
{
    private mixed $expected;
    private mixed $actual;
    private string $expectedAsString;
    private string $actualAsString;

public function __construct(mixed $expected, mixed $actual, string $expectedAsString, string $actualAsString, string $message = '')
    {
        parent::__construct($message);

$this->expected         = $expected;
        $this->actual           = $actual;
        $this->expectedAsString = $expectedAsString;
        $this->actualAsString   = $actualAsString;
    }

public function getActual(): mixed
    {
        return $this->actual;
    }

public function getExpected(): mixed
    {
        return $this->expected;
    }

public function getActualAsString(): string
    {
        return $this->actualAsString;
    }

public function getExpectedAsString(): string
    {
        return $this->expectedAsString;
    }

public function getDiff(): string
    {
        if (!$this->actualAsString && !$this->expectedAsString) {
            return '';
        }

$differ = new Differ(new UnifiedDiffOutputBuilder("\n--- Expected\n+++ Actual\n"));

return $differ->diff($this->expectedAsString, $this->actualAsString);
    }

public function toString(): string
    {
        return $this->getMessage() . $this->getDiff();
    }
}

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