Stand by me

stand_by_me_spec.rb

require 'rails_helper'

class Tear
end

class Me
  attr_accessor :you

  def afraid?
    !you.present?
  end

  def shed_a_tear
    Tear.new unless you.present?
  end
end

class You
  def stand_by(me)
    me.you = self
  end
end

RSpec.describe "Stand By Me" do
  let(:me) { Me.new }
  let(:you) { You.new }
  before { you.stand_by me }

  context "When the night has come and the land is dark" do
    context "And the moon is the only light we'll see" do
      specify { expect(me).not_to be_afraid }
    end
  end

  context "If the sky that we look upon should tumble and fall" do
    context "Or the mountain should crumble to the sea" do
      specify { expect(me.shed_a_tear).to be_nil }
    end
  end
end