public function testCredentialsGetUpdated()
{
$credentials = new Credentials('access-key-one', 'secret');
$signature = $this->getMock('Aws\\Common\\Signature\\SignatureV4');
$config = new Collection();
$client = new \Aws\S3\S3Client($credentials, $signature, $config);
$listener = new SignatureListener($credentials, $signature);
$client->addSubscriber($listener);
$this->assertEquals('access-key-one', $this->readAttribute($listener, 'credentials')->getAccessKeyId());
$client->setCredentials(new Credentials('access-key-two', 'secret'));
$this->assertEquals('access-key-two', $this->readAttribute($listener, 'credentials')->getAccessKeyId());
}
