Testing a variable assignment in rspec

Question

Does anyone know why this test is failing? All I'm trying to do is prove this method (starting positions) assigns the current_room to the starting_room and I can't get a value returned for current_room?

class Room
  attr_reader :starting_room, :current_room  

  def initialize
    @starting_room = "Room 5"
    @current_room = nil
  end

  def starting_positions
    @current_room = starting_room
  end

end


 before(:each) do
   @room = Room.new
 end

 describe '#starting_positions' do
  it 'sets the starting location to the current location' do
    @room.instance_variable_set(:@starting_room, "Room 5")
    expect(@room.current_room).to eql("Room 5")
  end
end

My output:

 Failures:

 1) Room#starting_positions sets the starting location to the current location
 Failure/Error: expect(@room.current_room).to eql("Room 5")

   expected: "Room 5"
        got: nil

Any ideas?

It seems @room is nil. please add p @room.class. Then I don't see the readers in the class, where are they? — Малъ Скрылевъ
– Малъ Скрылевъ, Commented Apr 21, 2014 at 5:27
Ahhh sorry, there are readers, I just didn't copy them over (doing that now...) — user3007294
– user3007294, Commented Apr 21, 2014 at 5:34
hmmm, I'm not too sure what you mean. Are you referring to the new @room object that is created with before(:each)? — user3007294
– user3007294, Commented Apr 21, 2014 at 5:41

gotva · Accepted Answer · 2014-04-21 05:46:28Z

2

You assign @starting_room and don't assign current_room. You need trigger starting_positions

before(:each) do
  @room = Room.new
end

describe '#starting_positions' do
  it 'sets the starting location to the current location' do
    @room.instance_variable_set(:@starting_room, "Room 5")
    @room.starting_positions
    expect(@room.current_room).to eql("Room 5")
  end
end

answered Apr 21, 2014 at 5:46

gotva

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