anchor.diff:  
   
   void newGame() {
  -  print("newGame triggered");
  -
  -
     CanvasElement element = querySelector(".game-element");
     gameLoop = new GameLoopHtml(element);
     canvas = element.context2D;
  
positive.code: 
      assert(coords.length >= oldLength);
    }
  
  
  
    void render(canvas) {
      coords.forEach((c) => renderSquare(c, white_color));
  
negative.code:     canvas.fillRect(0, 0, 20, 20);
      renderSquare(gold.getLocation(), gold_color);
      snake.render(canvas);
  
      snake.getCoords().forEach((c) => renderSquare(c, white_color));
      snake.showPoints();
    }
  
  