### Question:
Game2048BoardManager implements Serializable { boolean isWinning() { for (int i = 0; i < complexity; i++) { for (int j = 0; j < complexity; j++) { Game2048Item item = game2048Items[i][j]; if (item.getNumber() == WINNING_THRESHOLD) { return true; } } } return false; } Game2048BoardManager(User user, int complexity, Context context); User getUser(); void undo(Context context);  }### Answer:
@Test public void testIsWinning() { initializeBoard(); fillBoardWithZero(); Game2048Item game2048Item2 = new Game2048Item(context); game2048Item2.setNumber(2); boardManager.setGame2048ItemWithIndex(game2048Item2, 2, 2); assertFalse(boardManager.isWinning()); Game2048Item game2048Item2048 = new Game2048Item(context); game2048Item2048.setNumber(2048); boardManager.setGame2048ItemWithIndex(game2048Item2048, 1, 1); assertTrue(boardManager.isWinning()); boardManager.resetSameSizeBoard(); assertFalse(boardManager.isWinning()); }