/**
* Constructs a comparison failure.
*
* @param string $expected
* @param string $actual
* @param string $message
* @access public
*/
public function __construct($expected, $actual, $message = '')
{
parent::__construct($message);
$this->expected = $expected === null ? 'null' : $expected;
$this->actual = $actual === null ? 'null' : $actual;
}
