Re: regtests about very small differencies

[Reinhold Kainhofer]

Am Monday, 12. September 2011, 12:01:25 schrieb Janek Warchoł:
> Hi all,
> 
> I'm going to fix an issue where a note is misplaced by about 0.07
> staffspace.  I'll add a regtest for this, but how will we make sure
> that it won't be overlooked in the future?  When we watch a regtest
> comparison, it shows us the output in a quite low-resolution
> rasterized form; it will be impossible to spot the difference.  I can
> also think of some more issues that i'm planning to fix which involve
> such small changes.

Look at how beam-quanting (input/regression/beam-quant-standard.ly) does it: 
It prints the position of the beams, so that all changes in the position will 
lead to a change in the displayed text, which will be detectable in the 
regtests.

Cheers,
Reinhold
-- 
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Reinhold Kainhofer, address@hidden, http://reinhold.kainhofer.com/
 * Financial & Actuarial Math., Vienna Univ. of Technology, Austria
 * http://www.fam.tuwien.ac.at/, DVR: 0005886
 * LilyPond, Music typesetting, http://www.lilypond.org