public function testIn()
{
$command = new MockCommand(array('request' => $this->request));
fwrite($command->request->input, 'nada mucho');
rewind($command->request->input);
$expected = "nada mucho";
$result = $command->in('What up dog?');
$this->assertEqual($expected, $result);
$expected = "What up dog? \n > ";
$result = $command->response->output;
$this->assertEqual($expected, $result);
}