I'm having trouble getting started with approval testing in ruby, I can't find any documentation, and I can't seem to make sense of the source code. I'd really appreciate some help getting this code to run.

spec_helper.rb

require 'approvals'
require 'approvals/rspec'

Approvals.configuration.approvals_path = './'

untitled.rb

def answer
  42
end

untitled_spec.rb

require './spec_helper'

require './untitled'

describe "untitled" do
  
  context "when doing sums" do
    it "multiplies correctly" do
      Approvals.verify(answer, :name => "untitled_test")
    end
  end
  
  subject do
    answer
  end

  it "works" do
      approve do
        subject
      end
    end
end