old_contents: class Rover:
      def __init__(self, x=0, y=0, direction='N'):
          self.x = x
          self.y = y
          self.direction = direction
  
new_contents: class Rover:
  
      compass = ['N', 'E', 'S', 'W']
  
      def __init__(self, x=0, y=0, direction='N'):
          self.x = x
          self.y = y
          self.direction = direction
  
subject: Fix failing compass test