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    <h3>Editing: ExceptionWrapper.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php declare(strict_types=1);
/*
 * This file is part of PHPUnit.
 *
 * (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 PHPUnit\Framework;

use const PHP_VERSION_ID;
use function array_keys;
use function get_class;
use function spl_object_hash;
use PHPUnit\Util\Filter;
use Throwable;
use WeakReference;

/**
 * Wraps Exceptions thrown by code under test.
 *
 * Re-instantiates Exceptions thrown by user-space code to retain their original
 * class names, properties, and stack traces (but without arguments).
 *
 * Unlike PHPUnit\Framework\Exception, the complete stack of previous Exceptions
 * is processed.
 *
 * @internal This class is not covered by the backward compatibility promise for PHPUnit
 */
final class ExceptionWrapper extends Exception
{
    /**
     * @var string
     */
    protected $className;

    /**
     * @var null|ExceptionWrapper
     */
    protected $previous;

    /**
     * @var null|WeakReference&lt;Throwable&gt;
     */
    private $originalException;

    public function __construct(Throwable $t)
    {
        // PDOException::getCode() is a string.
        // @see https://php.net/manual/en/class.pdoexception.php#95812
        parent::__construct($t-&gt;getMessage(), (int) $t-&gt;getCode());

        $this-&gt;setOriginalException($t);
    }

    public function __toString(): string
    {
        $string = TestFailure::exceptionToString($this);

        if ($trace = Filter::getFilteredStacktrace($this)) {
            $string .= &quot;\n&quot; . $trace;
        }

        if ($this-&gt;previous) {
            $string .= &quot;\nCaused by\n&quot; . $this-&gt;previous;
        }

        return $string;
    }

    public function getClassName(): string
    {
        return $this-&gt;className;
    }

    public function getPreviousWrapped(): ?self
    {
        return $this-&gt;previous;
    }

    public function setClassName(string $className): void
    {
        $this-&gt;className = $className;
    }

    public function setOriginalException(Throwable $t): void
    {
        $this-&gt;originalException($t);

        $this-&gt;className = get_class($t);
        $this-&gt;file      = $t-&gt;getFile();
        $this-&gt;line      = $t-&gt;getLine();

        $this-&gt;serializableTrace = $t-&gt;getTrace();

        foreach (array_keys($this-&gt;serializableTrace) as $key) {
            unset($this-&gt;serializableTrace[$key]['args']);
        }

        if ($t-&gt;getPrevious()) {
            $this-&gt;previous = new self($t-&gt;getPrevious());
        }
    }

    public function getOriginalException(): ?Throwable
    {
        return $this-&gt;originalException();
    }

    /**
     * Method to contain static originalException to exclude it from stacktrace to prevent the stacktrace contents,
     * which can be quite big, from being garbage-collected, thus blocking memory until shutdown.
     *
     * Approach works both for var_dump() and var_export() and print_r().
     */
    private function originalException(?Throwable $exceptionToStore = null): ?Throwable
    {
        // drop once PHP 7.3 support is removed
        if (PHP_VERSION_ID &lt; 70400) {
            static $originalExceptions;

            $instanceId = spl_object_hash($this);

            if ($exceptionToStore) {
                $originalExceptions[$instanceId] = $exceptionToStore;
            }

            return $originalExceptions[$instanceId] ?? null;
        }

        if ($exceptionToStore) {
            $this-&gt;originalException = WeakReference::create($exceptionToStore);
        }

        return $this-&gt;originalException !== null ? $this-&gt;originalException-&gt;get() : null;
    }
}
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