<?php
/*
* 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\Constraint;

use PHPUnit\Util\Filter;
use Throwable;

class Exception extends Constraint
{
/**
* @var string
*/
protected $className;

/**
* @param string $className
*/
public function __construct($className)
{
parent::__construct();
$this->className = $className;
}

/**
* Evaluates the constraint for parameter $other. Returns true if the
* constraint is met, false otherwise.
*
* @param mixed $other Value or object to evaluate.
*
* @return bool
*/
protected function matches($other)
{
return $other instanceof $this->className;
}

/**
* Returns the description of the failure
*
* The beginning of failure messages is "Failed asserting that" in most
* cases. This method should return the second part of that sentence.
*
* @param mixed $other Evaluated value or object.
*
* @return string
*/
protected function failureDescription($other)
{
if ($other !== null) {
$message = '';
if ($other instanceof Throwable) {
$message = '. Message was: "' . $other->getMessage() . '" at'
. "\n" . Filter::getFilteredStacktrace($other);
}

return \sprintf(
'exception of type "%s" matches expected exception "%s"%s',
\get_class($other),
$this->className,
$message
);
}

return \sprintf(
'exception of type "%s" is thrown',
$this->className
);
}

/**
* Returns a string representation of the constraint.
*
* @return string
*/
public function toString()
{
return \sprintf(
'exception of type "%s"',
$this->className
);
}
}