tweet_spec.rb

describe Tweet do
  describe "basic fetching of tweets" do
    describe "(search conditions)" do
      attr_reader :new_search
      before do 
        @new_search = mock(Twitter::Search, :null_object => true)
        Twitter::Search.should_receive(:new).and_return(new_search)
      end
      after do
        Tweet.fetch_new_tweets
      end
  
      it "should search for tweets containing 'protip:'" do
        new_search.should_receive(:containing).with('protip:').and_return(new_search)
      end
      
      it "should only find new tweets" do
        last_id_processed = Tweet.stub!(:last_id_processed => 123)
        new_search.should_receive(:since).with(123).and_return(new_search)
      end

      it "should skip retweets" do
        new_search.should_receive(:not_retweeted).and_return(new_search)
      end

      it "should end with a fetch" do
        new_search.should_receive(:fetch)  # returns nil, if anything chains off this, boom!
      end

      it "should happen in a certain order" do
        new_search.should_receive(:containing).ordered.and_return(new_search)
        new_search.should_receive(:not_retweeted).ordered.and_return(new_search)
        new_search.should_receive(:since).ordered.and_return(new_search)
        new_search.should_receive(:fetch).ordered
      end
    end
   
    it "should get the last tweet_id processed from the database" do
      last_tweet = mock(Tweet)

      Tweet.should_receive(:last).and_return(last_tweet)
      last_tweet.should_receive(:object_id)

      Tweet.last_id_processed
    end
  end
end