public function testEchoResponse()
{
$output = null;
$this->response->addEventHandler(Response::OUTPUT_EVENT, function (Response $response) use(&$output) {
$output = $response->getResponse();
});
$this->response->setResponseType(Response::TEXT);
$this->response->echoResponse('Hello World');
$this->assertSame('Hello World', $output);
}
