public function testOutput()
{
$r = new Response(200, array('Content-Type' => 'text/plain'));
$r->setBody('This is a test.');
$response = $r->getHeadersAsString() . PHP_EOL . $r->getBody();
$this->assertContains('HTTP/1.1 200 OK', $response);
$this->assertContains('Content-Type: text/plain', $response);
$this->assertContains('This is a test', $response);
}