rspec_expectations.rb

# example from: https://relishapp.com/rspec/rspec-mocks/v/2-14/docs/
# wrote the code to make their example spec pass


class Account
  attr_accessor :logger

  def close
    logger.account_closed(self)
  end

  def account_closed(something)
  end
end

describe Account do
  context "when closed" do
    it "logs an 'account closed' message" do
      logger = double()
      account = Account.new
      account.logger = logger

      logger.should_receive(:account_closed).with(account)

      account.close
    end
  end
end