public function testStatusCode() {
$flattened = FlattenException::create(new \RuntimeException(), 403);
$this
->assertEquals('403', $flattened
->getStatusCode());
$flattened = FlattenException::create(new \RuntimeException());
$this
->assertEquals('500', $flattened
->getStatusCode());
$flattened = FlattenException::create(new NotFoundHttpException());
$this
->assertEquals('404', $flattened
->getStatusCode());
}