Rspec sample

gistfile1.rb

#sample code
class Hoge
  def say(message=nil)
    message ||= "hoge"
    return message
  end
end

#rspec
describe Hoge do
  describe "#say" do
    context "when argument is nil" do
      subject { Hoge.new }   
      its(:say) { should == 'hoge' }
    end

    context "when argument is 'fuga'" do
       subject{
         hoge = Hoge.new
         hoge.say('fuga')
       }
       it { should == 'fuga' }
    end
  end
end