def is my stub framework

pubdate_original.rb

## original code

describe "#pubdate" do
  describe "before publishing" do
   it "is blank" do 
    @it.pubdate.must_be_nil
   end 
  end
  describe "after publishing" do 
    before do
     @clock = stub!
      @now = DateTime.parse("2011-09-11T02:56")
      stub(@clock).now(){@now}
      @it.blog = stub!
      @it.publish(@clock) 
    end
    it "is a datetime" do 
      @it.pubdate.class.must_equal(DateTime)
    end 
    it "is the current time" do
      @it.pubdate.must_equal(@now)
    end
  end
end

pubdate_suggested.rb

## suggested code

describe "#pubdate" do
  describe "before publishing" do
    it "is blank" do
      @it.pubdate.must_be_nil
    end
  end

  describe "after publishing" do
     before do
       class Clock < DateTime
         def now
           DateTime.parse("2011-09-11T02:56")
         end
       end
       @clock = Clock.new
       @blog = MiniTest::Mock.new
       @blog.expect :add_entry, nil, [@it]
       @it.blog = @blog
       @it.publish(@clock)
     end    
     after do
       @blog.verify
     end          
     it "is a datetime" do
        @it.pubdate.class.must_equal(DateTime)
     end
     it "is the current time" do
       @it.pubdate.must_equal(@clock.now)
     end
   end
 end

pubdate_zven_better.rb

## or better yet

describe "after publishing" do
  before do
    class Clock < DateTime
      def now
        self.class.parse("2011-09-11T02:56")
      end
    end
   ...
  end
  ...
  it "is a datetime" do
    @it.pubdate.class.must_equal(Clock)
  end
  ...