Ruby beginner: class, instance variable, accessor, rspec - ruby

Question

So I'm in the process of trying to recreate a board game called Ciao Ciao. I'm not anywhere near done but I keep getting stuck and would really appreciate some help. So far I've made the following 3 classes and rspec file:
The Player class
require_relative 'die'
class Player
attr_reader :name
attr_accessor :token, :position, :point
def initialize(name, token, position, point)
#name = name
#token = token
#position = position
#point = point
end
def advance
#position += #number #basically I want the player to advance when he rolls between 1-4 but not sure how to connect it to the Die class here.
end
def lie
#token -= 1 #here I want the player to lose a token if he rolls between 5-6
#position == 0 #and have to start again from position 0
end
def score
#token -= 1
#position == 0
#point += 1
end
end
The Game Class
require_relative 'player'
require_relative 'die'
class Game
def initialize(title)
#title = title
#players = []
end
def join(player)
#players << player
end
def play
puts "There are #{#players.size} players in the current round of #{#title}."
#players.each do |player|
die = Die.new
case die.roll
when 1..4
puts "#{player.name} just rolled #{die.roll}!"
player.advance
puts "#{player.name} advances to #{player.position}!"
when 5..6
puts "#{player.name} just rolled #{die.roll}!"
player.lie
puts "#{player.name} is down to #{player.token} and starts at #{player.name}!"
end
puts "#{player.name} has #{player.point} points and is at #{player.position}. He has #{player.token} token(s) left."
if player.position >= 10
player.score
puts "#{player.name} scores a point for reaching the endzone!"
end
if player.token == 0
#players.delete(player)
puts "#{player.name} has been eliminated."
end
end
end
end
The Die Class
class Die
attr_reader :number
def initialize
end
def roll
#number = rand(1..6)
end
end
The rspec file
require_relative 'game'
describe Game do
before do
#game = Game.new("chaochao")
#initial_token == 4
#initial_position == 0
#initial_point == 0
#player = Player.new("iswg", #initial_token, #initial_position, #initial_point)
#game.join(#player)
end
it "advances the player if a number between 1 and 4 is rolled" do
#game.stub(:roll).and_return(3)
#game.play
#player.position.should == #initial_position + 3
end
it "makes the player lie if a number between 5 and 6 is rolled" do
#game.stub(:roll).and_return(5)
#game.play
#player.token.should == #initial_token - 1
end
end
I keep getting the following error message when I run the rspec file:
Failures:
1) Game advances the player if a number between 1 and 4 is rolled
Failure/Error: #game.play
NoMethodError:
undefined method -' for nil:NilClass
# ./player.rb:19:inlie'
# ./game.rb:24:in block in play'
# ./game.rb:16:ineach'
# ./game.rb:16:in play'
# ./game_spec.rb:17:inblock (2 levels) in '
2) Game makes the player lie if a number between 5 and 6 is rolled
Failure/Error: #game.play
NoMethodError:
undefined method +' for nil:NilClass
# ./player.rb:15:inadvance'
# ./game.rb:21:in block in play'
# ./game.rb:16:ineach'
# ./game.rb:16:in play'
# ./game_spec.rb:23:inblock (2 levels) in '
So the error message points to the advance/lie methods under Player class but I have no idea what I've done wrong. Also please feel free to point out other blunders. Thanks so much in advance.

Answer 1

This isn't the whole problem, but it's a problem.
Your first error stood out to me a bit. player.lie is only supposed to be called when the roll is a 5 or 6, but you stubbed the roll method to return a 3. Or did you?
roll is a method of the Die class, but you stubbed #game, which is an instance of the Game class.