public function testTypeManipulation()
{
$this->assertEqual('html', $this->response->type());
$this->assertEqual('html', $this->response->type('html'));
$this->assertEqual('json', $this->response->type('json'));
$this->assertEqual('json', $this->response->type());
$this->assertEqual(false, $this->response->type(false));
$this->assertEqual(false, $this->response->type());
}