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You can use Mocha to do what you want...

def test_me
  time_now  ime.parse("Jan 1 2001")
  Time.stubs(:now).returns( lambda { time_now } )
  assert_equal Time.parse("Jan 1 2001"), Time.now
  time_now  ime.parse("Oct 1 2001")
  assert_equal Time.parse("Oct 1 2001"), Time.now
end

The test times should be unaffected. The Time class should get put back to
normal in the test teardown.

For any other questions on Mocha, it's probably better to use the mailing
list - http://rubyforge.org/mailman/listinfo/mocha-developer

-- 
James.
http://blog.floehopper.org

On 06/09/06, Pete Yandell <pete / notahat.com> wrote:
>
> Oops...not paying attention to which list I was reading, so my answer
> was Rails-specific! The code still applies though, and still has the
> advantage of restoring time to normality once you're done.
>
> Pete Yandell
>
> On 06/09/2006, at 9:21 AM, Pete Yandell wrote:
>
> > Jay,
> >
> > I don't know about Mocha, but you have to be a bit careful about
> > replacing Time.now because the test timings depend on it. The way I
> > do it is as follows. First, I've got a little plugin that includes
> > this:
> >
> >   class Time
> >     @@now  il
> >
> >     def self.nowime)
> >       @@now  ime
> >     end
> >
> >     def self.forced_now #:nodoc:
> >       @@now || unforced_now
> >     end
> >
> >     class << self
> >       alias_method :unforced_now, :now
> >       alias_method :now, :forced_now
> >     end
> >   end
> >
> > and then in my test helper:
> >
> >   def at_time(time)
> >     time  ime.parse(time + ' UTC') unless time.instance_of?(Time)
> >     Time.now  ime
> >     begin
> >       yield
> >     ensure
> >       Time.now  il
> >     end
> >   end
> >
> > That lets me do something like this in a test:
> >
> >   def test_whatever
> >     at_time("Jan 1 2001") do
> >       # Tests go in here.
> >     end
> >   end
> >
> > Hope that helps!
> >
> > Cheers,
> >
> > Pete Yandell
> >
> >
> > On 06/09/2006, at 7:25 AM, Jay Levitt wrote:
> >
> >> Mocha seems a great way to stub Time.now for testing expiration
> >> dates, etc.
> >> with rspec.  I can get it to stub a single time easily:
> >>
> >>   Time.stubs(:now).returns(Time.at(1))
> >>
> >> but what I'd really like to do is do that multiple times during a
> >> test:
> >>
> >>   specify "with an expired cookie should return nil"
> >>     Time.stubs(:now).returns(Time.parse("Jan 1 2001"))
> >>     louie.login
> >>     cookie  ouie.remember_me
> >>
> >>     Time.stubs(:now).returns(Time.parse("Oct 1 2001"))
> >>     louie.login_with_cookie(cookie).should_be_nil
> >>   end
> >>
> >> However, only the first stubs call has any effect.  I've tried
> >> stubbing it
> >> to a FakeTime object:
> >>
> >>   Time.stubs(:now).returns(FakeTime.now)
> >>
> >> but it only looks at the value of FakeTime.now when the stub is
> >> created.
> >> Is there a way using Mocha/Stubba to stub a routine and have it call
> >> another for the return value?  I've tried creating procs/lambdas,
> >> but I
> >> must be doing something wrong - I get an infinite recursion.
> >>
> >> Jay Levitt
> >>
> >
> >
>
>
>

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