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<?php declare(strict_types=1);
/*
* This file is part of PHPUnit.
*
* (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 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<Throwable>
*/
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->getMessage(), (int) $t->getCode());
$this->setOriginalException($t);
}
public function __toString(): string
{
$string = TestFailure::exceptionToString($this);
if ($trace = Filter::getFilteredStacktrace($this)) {
$string .= "\n" . $trace;
}
if ($this->previous) {
$string .= "\nCaused by\n" . $this->previous;
}
return $string;
}
public function getClassName(): string
{
return $this->className;
}
public function getPreviousWrapped(): ?self
{
return $this->previous;
}
public function setClassName(string $className): void
{
$this->className = $className;
}
public function setOriginalException(Throwable $t): void
{
$this->originalException($t);
$this->className = get_class($t);
$this->file = $t->getFile();
$this->line = $t->getLine();
$this->serializableTrace = $t->getTrace();
foreach (array_keys($this->serializableTrace) as $key) {
unset($this->serializableTrace[$key]['args']);
}
if ($t->getPrevious()) {
$this->previous = new self($t->getPrevious());
}
}
public function getOriginalException(): ?Throwable
{
return $this->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 < 70400) {
static $originalExceptions;
$instanceId = spl_object_hash($this);
if ($exceptionToStore) {
$originalExceptions[$instanceId] = $exceptionToStore;
}
return $originalExceptions[$instanceId] ?? null;
}
if ($exceptionToStore) {
$this->originalException = WeakReference::create($exceptionToStore);
}
return $this->originalException !== null ? $this->originalException->get() : null;
}
}
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