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    <h3>Editing: ObjectComparator.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php declare(strict_types=1);
/*
 * This file is part of sebastian/comparator.
 *
 * (c) Sebastian Bergmann &lt;sebastian@phpunit.de&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace SebastianBergmann\Comparator;

use function get_class;
use function in_array;
use function is_object;
use function sprintf;
use function substr_replace;

/**
 * Compares objects for equality.
 */
class ObjectComparator extends ArrayComparator
{
    /**
     * 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, $actual)
    {
        return is_object($expected) &amp;&amp; is_object($actual);
    }

    /**
     * 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 $processed    List of already processed elements (used to prevent infinite recursion)
     *
     * @throws ComparisonFailure
     */
    public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = false, $ignoreCase = false, array &amp;$processed = [])/*: void*/
    {
        if (get_class($actual) !== get_class($expected)) {
            throw new ComparisonFailure(
                $expected,
                $actual,
                $this-&gt;exporter-&gt;export($expected),
                $this-&gt;exporter-&gt;export($actual),
                false,
                sprintf(
                    '%s is not instance of expected class &quot;%s&quot;.',
                    $this-&gt;exporter-&gt;export($actual),
                    get_class($expected)
                )
            );
        }

        // don't compare twice to allow for cyclic dependencies
        if (in_array([$actual, $expected], $processed, true) ||
            in_array([$expected, $actual], $processed, true)) {
            return;
        }

        $processed[] = [$actual, $expected];

        // don't compare objects if they are identical
        // this helps to avoid the error &quot;maximum function nesting level reached&quot;
        // CAUTION: this conditional clause is not tested
        if ($actual !== $expected) {
            try {
                parent::assertEquals(
                    $this-&gt;toArray($expected),
                    $this-&gt;toArray($actual),
                    $delta,
                    $canonicalize,
                    $ignoreCase,
                    $processed
                );
            } catch (ComparisonFailure $e) {
                throw new ComparisonFailure(
                    $expected,
                    $actual,
                    // replace &quot;Array&quot; with &quot;MyClass object&quot;
                    substr_replace($e-&gt;getExpectedAsString(), get_class($expected) . ' Object', 0, 5),
                    substr_replace($e-&gt;getActualAsString(), get_class($actual) . ' Object', 0, 5),
                    false,
                    'Failed asserting that two objects are equal.'
                );
            }
        }
    }

    /**
     * Converts an object to an array containing all of its private, protected
     * and public properties.
     *
     * @param object $object
     *
     * @return array
     */
    protected function toArray($object)
    {
        return $this-&gt;exporter-&gt;toArray($object);
    }
}
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