어려운 테스트 아래와 같은 코드가 있다. ChessGame.java class ChessService { private final ChessGameDao chessGameDao; public void createNewGame() { ChessGame newGame = ChessBoardFactory.getInitialBoard(); chessGameDao.save(newGame) } public void statusGame(ChessGame chessGame) { chessGame.status(); chessGameDao.update(chessGame); } } class ChessGame { private final ChessBoard chessBoard; } class ChessBoard { priv..