private function getComparison(Exception $e)
{
if ($e instanceof PHPUnit_Framework_ExpectationFailedException && $e->getComparisonFailure()) {
return ['expected' => $e->getComparisonFailure()->getExpected(), 'actual' => $e->getComparisonFailure()->getActual()];
}
return ['expected' => '', 'actual' => ''];
}