public function testCreateFromFile()
{
// create temp file
$filename = tempnam(sys_get_temp_dir(), 'prefix');
file_put_contents($filename, 'somebinarydata');
// store file
$id = $this->gridFs->storeFile($filename, array('meta1' => 1, 'meta2' => 2));
$this->assertInstanceOf('\\MongoId', $id);
unlink($filename);
}