user_spec.rb

# clear; spec spec/models/user_spec.rb -f specdoc --colour
require 'spec/spec_helper'

describe User, "add reputation via voting" do

  let(:user) {User.new}

  context "when starting from a brand new user" do
    it "gives a user one reputation for free" do
      user.reputation.should equal 1
    end
    it "increments the reputation by one" do
      user.add_reputation(:voting)
      user.reputation.should equal 2
    end

    it "can't add rep more than 10 times per day" do
      vote_twenty_times(user)
      user.reputation.should equal 11
    end
  end

  context "when working with an existing user who has some history" do

    before {user.last_vote_date = 3.days.ago }

    it "limits the reputation to the daily limit" do
      user.last_vote_date.utc < 1.day.ago
      vote_twenty_times(user)
      user.reputation.should equal 11
    end

    context "when user already has some reputation" do

      before {user.reputation = 5}

      it "limits rep per day when last vote is a few days back and has some rep already" do
        user.votes_per_day = 5
        vote_twenty_times(user)
        user.reputation.should equal 15
      end
    end
  end

  def vote_twenty_times(user)
    20.times do
      user.add_reputation(:voting) 
    end
  end
end