Rails - Mar 2006 - Test Failure: <0.01> expected but was <0.01>

I have two database fields, and then I have a method which shows the
difference.  It''s simply

def ev_diff
  ev_push - ev_fold
end

The value of ev_push is 0.26, value of ev_fold is 0.05, so the diff is
obviously 0.01.  I have an assertion written as:

assert_equal 0.01, stats.ev_diff

Which fails..but I have no clue why.  The failure message follow:

  1) Failure:
test_calc_stats(HandStatsTest) [test/unit/hand_stats_test.rb:54]:
<0.01> expected but was
<0.01>.

That makes absolutely no sense to me.  It expects 0.01 and gets 0.01,
but somehow fails?  What''s up with that?

Pat

Hi,

To assert float values, you should use:

assert_in_delta expected_float, actual_float, delta

Look at Test::Unit rdocumentation for details. Hope this helps.

Simon

Pat Maddox wrote:
> I have two database fields, and then I have a method which shows the
> difference.  It''s simply
>
> def ev_diff
>   ev_push - ev_fold
> end
>
> The value of ev_push is 0.26, value of ev_fold is 0.05, so the diff is
> obviously 0.01.  I have an assertion written as:
>
> assert_equal 0.01, stats.ev_diff
>
> Which fails..but I have no clue why.  The failure message follow:
>
>   1) Failure:
> test_calc_stats(HandStatsTest) [test/unit/hand_stats_test.rb:54]:
> <0.01> expected but was
> <0.01>.
>
> That makes absolutely no sense to me.  It expects 0.01 and gets 0.01,
> but somehow fails?  What''s up with that?
>
> Pat
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
>   
-- 
Simon PASQUIER
Quiconnect <http://www.quiconnect.com>
Tel: +33 4 56 58 61 02 
Skype Name: simonpasquier
This message may contain privileged or confidential information

2006/3/22, Pat Maddox <pergesu@gmail.com>:
> Which fails..but I have no clue why.  The failure message follow:
>
>   1) Failure:
> test_calc_stats(HandStatsTest) [test/unit/hand_stats_test.rb:54]:
> <0.01> expected but was
> <0.01>.
>
> That makes absolutely no sense to me.  It expects 0.01 and gets 0.01,
> but somehow fails?  What''s up with that?
Another option is to test the String value of each:

assert_equal ''0.01'', stats.ev_diff.to_s

Hope that helps !
--
Fran?ois Beausoleil
http://blog.teksol.info/