def find(*args)
    method = description_args.first.sub(' ', '_')
    Post.send(method, *args)
  end

  describe "today" do
    it "should show the post for tomorrow" do
      find("tomorrow").map(&:text).should include("Tomorrow's post")
    end
  end

  describe "yesterday" do
    it "should be able find yesterday, given a Date" do
      find(Date.today).map(&:text).should include("Yesterday's post")
    end
  end

  describe "tomorrow" do
    it "should be able find tomorrow, given a Date" do
      find(Date.today).map(&:text).should include("Tomorrow's post")
    end
  end