On Wed, Apr 21, 2010 at 11:34 AM, Tudor Girba <tudor.gi...@gmail.com> wrote:

> Basically yes.
>
> It's not just for giving it to someone else, but also for yourself. The
> idea is to quickly notice when tests change color (from green to red), so
> instead of remembering how many failed before and comparing with the current
> number of failures, you simply mark them as expected failures and your bar
> becomes green.
>

Thanks, I think I get it now.

So really, I shouldn't expect to see any expected failures in Pharo 1.0, but
since Pharo 1.1 is still in alpha, it would be OK to have some there until
it's ready for release.

--
Cheers,
Peter


> Doru
>
>
>
> On 21 Apr 2010, at 11:28, Peter Hugosson-Miller wrote:
>
>  Thanks for answering, Doru!
>>
>> So if I've understood you correctly, expected failures are useful when one
>> wants to give some code to someone else, with all the tests running green,
>> but at the same time let that person know that some specific tests are
>> really still red, but known about. In other words, are they simply a way of
>> documenting "work in progress", and not for production code?
>>
>> --
>> Cheers,
>> Peter
>>
>> On Wed, Apr 21, 2010 at 11:12 AM, Tudor Girba <tudor.gi...@gmail.com>
>> wrote:
>> Hi,
>>
>> The idea behind this is that you can use unit tests to document things you
>> have not done yet, or bugs that you know about but you do not want to spend
>> time working on right now.
>>
>> Simply reverting the assertion in your test does make the test runner
>> green, but it fails to document the intention, and a newcomer might get to
>> the false conclusion that the answer is not 42. By marking the test as
>> expected failure, you make the test runner green, but you also explicitly
>> say that the answer should be 42, but the machine is not quite perfect yet.
>>
>> Cheers,
>> Doru
>>
>>
>>
>> On 21 Apr 2010, at 11:06, Peter Hugosson-Miller wrote:
>>
>> I'm trying to follow along with this discussion, but now I feel really
>> stupid :-(
>>
>> I've been using SUnit since 1998 (when it was still called
>> "BeckTestingFramework"), and ever since "expected failures" showed up, I've
>> never understood them. So I wonder if some kind guru-like person could
>> please explain to me what they are useful for? I mean, to my way of
>> thinking, if one writes a test that is expected to fail, then why not invert
>> the test and call it a success instead?
>>
>> for example:
>>
>>     self should: [answer = 42]
>>
>> ...as an expected failure could simply be re-written as
>>
>>     self should: [answer ~= 42]
>>
>> ...right? No, obviously I've missed something really obvious and
>> important, and that's why I'm asking the question now. Please be gentle ;-)
>>
>> --
>> Cheers,
>> Peter
>>
>> On Wed, Apr 21, 2010 at 10:30 AM, Stéphane Ducasse <
>> stephane.duca...@inria.fr> wrote:
>> We should have a look at what adrian did now the problem is that
>> understanding a large set of changes is more difficult than a couple of
>> simple ones.
>> If somebody want to help we are open.
>> Stef
>>
>>
>> > I think Adrian Kuhn did that in his SUnit work. I also remember he also
>> introduced a difference between expectedFailures and expectedErrors.
>> >
>> > Doru
>> >
>> >
>> > On 21 Apr 2010, at 10:16, Stéphane Ducasse wrote:
>> >
>> >>
>> >> On Apr 21, 2010, at 9:51 AM, Adrian Lienhard wrote:
>> >>
>> >>> Yea, I agree, the GUI is suboptimal.
>> >>>
>> >>> I still think, though, that treating this case as a failure is
>> correct. For instance, consider the case where you had added a workaround to
>> a known bug and when the bug is fixed you need to remove the workaround
>> again. Maybe it even leads to a wrong behavior now that the bug is gone. In
>> this case you really want to know that the test does not fail anymore.
>> >>
>> >> yes
>> >> Now I have the impression that expectedFailures should be like passes,
>> failed, errors: a state of the tests.
>> >>
>> >> Stef
>> >>
>> >>> In any case, I think that tagging methods as expected failures should
>> be done with pragmas and not with #expectedFailures. Like this it would also
>> be much easier to understand what's going on when you have a failure in this
>> test although all assertions pass.
>> >>>
>> >>> Adrian
>> >>>
>> >>> On Apr 21, 2010, at 08:22 , Stéphane Ducasse wrote:
>> >>>
>> >>>>
>> >>>> On Apr 20, 2010, at 11:20 PM, Adrian Lienhard wrote:
>> >>>>
>> >>>>> Yes, if a test that is expected to fail does not fail, this is
>> treated as a failure. I think that makes sense.
>> >>>>
>> >>>> well it depends about the scenario.
>> >>>> you put on expectedfailures something that gets in your way now, so
>> after if it works even better.
>> >>>> of course you should get notified that the test is green while
>> expected it to failed.
>> >>>>
>> >>>> Now it leads to a UI problem where you have a failure that passes so
>> when you click on it nothing happens: no debugger.
>> >>>> And you can wonder why the hell do I have a failure when my tests
>> pass.
>> >>>>
>> >>>> So I think that this implementation of expectedFailures is a hack.
>> >>>>
>> >>>>>
>> >>>>> Adrian
>> >>>>>
>> >>>>> On Apr 20, 2010, at 21:57 , Stéphane Ducasse wrote:
>> >>>>>
>> >>>>>> Hi
>> >>>>>>
>> >>>>>> I tagged some tests as expected failures and I got a strange
>> behavior.
>> >>>>>> On the the tests which was passing was listed under the failures.
>> >>>>>> When I renamed the method without updating the expected failures my
>> bar was green.
>> >>>>>> So expected failures really expect that the tests failed? We cannto
>> have green tests in there?
>> >>>>>>
>> >>>>>> Stef
>> >>>>>> _______________________________________________
>> >>>>>> Pharo-project mailing list
>> >>>>>> Pharo-project@lists.gforge.inria.fr
>> >>>>>>
>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project
>> >>>>>
>> >>>>>
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>> >>>>
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>> > --
>> > www.tudorgirba.com
>> >
>> > "Live like you mean it."
>> >
>> >
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>> --
>> www.tudorgirba.com
>>
>> "Reasonable is what we are accustomed with."
>>
>>
>>
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>
> --
> www.tudorgirba.com
>
> "Beauty is where we see it."
>
>
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