I understand the resistance to implement yet another bit of process
and effort around layout tests. I really do. However, I found some
merit in Dirk's idea -- it allows us to clearly see the impact of a
regression.

Sadly, I can't come up with a specific example at the moment, but let
me pull one out of my ... hat, based on previous experiences. Let's
say we had a regression in JSON parsing. But since we already fail
parts of the LayoutTests/fast/js/JSON-parse.html, we wouldn't notice
it. Especially with DOM bindings, there are tons of tests like this --
we pass only parts of them, so we wouldn't know when our changes or
commits upstream introduce regressions that we really ought to be
noticing.

It's kind of like marking layout tests as flakey: there's no way to
determine whether the flakiness is gone other than by recording some
extra information.

So to me at least, the benefit of this type of solution is not
near-zero. My only hesitation comes from having to decide whether we
should stop and implement this rather than dedicate all of our
resources to plowing ahead in fixing layout tests and driving the
number to 0 (and thus eliminating the need for this solution).

:DG<

On Fri, Aug 21, 2009 at 6:43 PM, Ojan Vafai<[email protected]> wrote:
> On Fri, Aug 21, 2009 at 4:54 PM, Peter Kasting <[email protected]>
> wrote:
>>
>> On Fri, Aug 21, 2009 at 4:50 PM, Dirk Pranke <[email protected]> wrote:
>>>
>>> This is all good feedback, thanks! To clarify, though: what do you
>>> think the cost will be? Perhaps you are assuming things about how I
>>> would implement this that are different than what I had in mind.
>>
>> Some amount of your time, and some amount of space on the bots.
>
> Also, some amount of the rest of the team's time to follow this process.
> Ojan
> >
>

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