getMockBuilder('\Aws\DynamoDb\DynamoDbClient') ->disableOriginalConstructor() ->setMethods(array('query')) ->getMock(); $return = $this->getMockBuilder('\Guzzle\Service\Resource\Model') ->setMethods(array('count', 'toArray')) ->getMock(); $data = array( 'Items' => array(), 'Count' => 0, 'ScannedCount'=> 0 ); $return->expects($this->once()) ->method('count') ->will($this->returnValue(count($data))); $return->expects($this->once()) ->method('toArray') ->will($this->returnValue($data)); // should return null default scope if none is set in database $client->expects($this->once()) ->method('query') ->will($this->returnValue($return)); $storage = new DynamoDB($client); $this->assertNull($storage->getDefaultScope()); } }