CODEWITHSUNDEEP
rubyrspec
Kiran Surdhar
Kiran Surdhar

Reputation: 1

Issue properly formatting ruby to pass rspec

I'm currently working through a set of TestFirst problems. The spec for the problem I'm working on can be found here: http://testfirst.org/live/learn_ruby/book_titles

I've tested the title method outside of the class so I know that it works, but once I place it in the class I get the following error:

 1) Book title should capitalize the first letter
    Failure/Error: @book.title.should == "Inferno"
    ArgumentError:
      wrong number of arguments (0 for 1)

Here's what I have so far:

class Book
  attr_accessor :title

  def initialize(title=nil)
    @title = title
  end

  def title(title)
    first_check = 0
    articles = %w{a the an in and of}
    words = title.split(" ")

    words.each do |word|

      if first_check == 0
        word.capitalize!
        first_check += 1
      elsif !articles.include?(word)
        word.capitalize!
      end

    end
    @title = words.join(" ")
  end

end

If someone could explain how the class should be formatted, it'd be greatly appreciated!

Upvotes: 0

Views: 102

Answers (1)

mu is too short
mu is too short

Reputation: 434595

Your problem is right here:

def title(title)

Your Book#title method expects an argument but you're not giving it one in your spec:

@book.title.should == "Inferno"
# ----^^^^^ this method call needs an argument

I think you actually want a Book#title= method:

def title=(title)
  # The same method body as you already have
end

Then you'll use the title accessor method that attr_accessor :title supplies and assigning a new title will use your title= method. And since you're supplying your own mutator method, you could use attr_reader instead:

class Book
  attr_reader :title

  def initialize(title=nil)
    @title = title
  end

  def title=(title)
    #...
  end
end

Upvotes: 1

Related Questions