public function testUsesAuth()
{
$guzzle = $this->getGuzzle();
$client = new Client();
$client->setClient($guzzle);
$client->setAuth('me', '**');
$client->request('GET', 'http://www.example.com/');
$request = end($this->history)['request'];
$this->assertEquals('Basic bWU6Kio=', $request->getHeaderLine('Authorization'));
}