A test socket is provided including a socket board, socket pins and a guiding member. The socket pins are exposed to an upper surface of the socket board and are configured to be electrically contacted by external terminals of an object. The guiding member is disposed on an upper surface of the socket board and is arranged to guide the external terminals as a single unit to contact the external terminals with the socket pins. The guiding member is also configured to a center of the socket board with a center of the object.