gistfile1.rb

class Twitter
  def self.find(twitter_username)
    # makes an API call to twitter to find the kinsey object!
    # returns a TwitterUser object
    # TwitterUser.new
  end
end

class TwitterUser
  def recent_tweets
    # calls to twitter to get all of the users recent tweets
    # ["#YOLO", "#imakefoodawesome GOod stuff!"]
  end
end

class RecentTweets
  def initialize(twitter_username)
    @twitter_user = Twitter.find(twitter_username)
  end
  
  def return_2
    tweets = @twitter_user.recent_tweets.take(10)
    if tweets < 2
      tweets + ["FAKE TWEET: user has less than 2"]
    else
      tweets
    end
  end
end

describe RecentTweets
  describe "#return_2" do
    context "unit level tests, with mocking!" do
      before :each do
        puts "before each: this runs twice"
        @fake_kinsey = double
        fake_tweets = [
          "#YOLO",
          "something happened to me",
          "awesome possum"
        ]
        @fake_kinsey.should_receive(:recent_tweets).and_return(fake_tweets)
        
        Twitter.should_receive(:find).with("kinsey").and_return(@fake_kinsey)
      end
      
      before :all do
        puts "before :all: this runs once"
      end
      
      it "returns only 10 tweets" do
        recent_tweet_finder = RecentTweets.new("kinsey")
        recent_tweet_finder.return_2.should == ["#YOLO", "something happened to me"]
      end
      
      context "when there is less than 2" do
        
        it "returns false" do
          if @fake_kinsey.nil?
            puts "there is no kinsey!" 
          else
            puts "there is a kinsey!"
          end
        
          fake_tweets = [
            "#YOLO"
          ]
          
          @fake_kinsey.should_receive(:recent_tweets).and_return(fake_tweets) # change the behavior of kinsey
        
          recent_tweet_finder = RecentTweets.new("kinsey")
          recent_tweet_finder.return_2.should == ["#YOLO", "FAKE TWEET: user has less than 2"]
        end
      end
    end
    
    context "Integration test!! No mocking!" do
      it "doesn't blow up when I talk to twitter for real" do
        if @fake_kinsey.nil?
          puts "there is no kinsey!" 
        else
          puts "there is a kinsey!"
        end
        
        kinsey = Twitter.find("kinsey")
        
        RecentTweets.new(kinsey).return_2.length.should == 2
      end
    end
  end
end