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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 function array_keys;
use function get_object_vars;
use PHPUnit\Util\Filter;
use RuntimeException;
use Throwable;
/**
* Base class for all PHPUnit Framework exceptions.
*
* Ensures that exceptions thrown during a test run do not leave stray
* references behind.
*
* Every Exception contains a stack trace. Each stack frame contains the 'args'
* of the called function. The function arguments can contain references to
* instantiated objects. The references prevent the objects from being
* destructed (until test results are eventually printed), so memory cannot be
* freed up.
*
* With enabled process isolation, test results are serialized in the child
* process and unserialized in the parent process. The stack trace of Exceptions
* may contain objects that cannot be serialized or unserialized (e.g., PDO
* connections). Unserializing user-space objects from the child process into
* the parent would break the intended encapsulation of process isolation.
*
* @see http://fabien.potencier.org/article/9/php-serialization-stack-traces-and-exceptions
*
* @internal This class is not covered by the backward compatibility promise for PHPUnit
*/
class Exception extends RuntimeException implements \PHPUnit\Exception
{
/**
* @var array
*/
protected $serializableTrace;
public function __construct($message = '', $code = 0, Throwable $previous = null)
{
parent::__construct($message, $code, $previous);
$this->serializableTrace = $this->getTrace();
foreach (array_keys($this->serializableTrace) as $key) {
unset($this->serializableTrace[$key]['args']);
}
}
public function __toString(): string
{
$string = TestFailure::exceptionToString($this);
if ($trace = Filter::getFilteredStacktrace($this)) {
$string .= "\n" . $trace;
}
return $string;
}
public function __sleep(): array
{
return array_keys(get_object_vars($this));
}
/**
* Returns the serializable trace (without 'args').
*/
public function getSerializableTrace(): array
{
return $this->serializableTrace;
}
}
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