public function testWriteStream()
{
$container = $this->getContainerMock();
$dataObject = $this->getDataObjectMock('filename.ext');
$container->shouldReceive('uploadObject')->andReturn($dataObject);
$adapter = new Rackspace($container);
$config = new Config([]);
$stream = tmpfile();
fwrite($stream, 'something');
$this->assertInternalType('array', $adapter->writeStream('filename.ext', $stream, $config));
fclose($stream);
}
