[webkit-dev] generic test expectations?

[Dirk Pranke]

On Tue, Nov 13, 2012 at 1:04 PM, Tony Chang <tony at chromium.org> wrote:
> On Tue, Nov 13, 2012 at 12:09 PM, Glenn Adams <glenn at skynav.com> wrote:
>>
>> On Tue, Nov 13, 2012 at 1:02 PM, Tony Chang <tony at chromium.org> wrote:
>>>
>>> I don't think we should support port specific ref test results.  That
>>> kind of misses the point of using a ref test in the first place.  I mean,
>>> you may as well check in port specific pixel results which are easier to
>>> review for correctness.
>>>
>>> It may be the case that a ref test is not appropriate for what you're
>>> trying to test.
>>
>>
>> In the case of line break behavior, using reftests seem better than pixel
>> tests, since there is less need for port-specific expectations. If I can
>> come up with a text based approach (perhaps using range boundary rects),
>> then I'll do so, but in the mean time, reftests seem a better option,
>> especially for defining correctness based expectations (instead of merely
>> regression based expectations). But we are straying from the original topic
>> of this thread.
>
>
> Did you try using the ahem font to see if you can get the same line break
> behavior across ports?  The ahem font doesn't always work for pixel tests
> (anti-aliasing issues? maybe line height issues?), but I think the width of
> each character should be the same.

Yeah, there were lots of pixel test failures in mountain lion w/ ahem
due to changes in aliasing.

-- Dirk