public function setUp()
{
$this->client = Common::getOssClient();
$this->bucketName = 'php-sdk-test-bucket-image-' . strval(rand(0, 10000));
$this->client->createBucket($this->bucketName);
Common::waitMetaSync();
$this->local_file = "example.jpg";
$this->object = "oss-example.jpg";
$this->download_file = "image.jpg";
$this->client->uploadFile($this->bucketName, $this->object, $this->local_file);
}