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From: esabof@gmail.com
To: help-gnu-emacs@gnu.org
Subject: Re: Render a buffer or string to a simpler string?
Date: Mon, 27 May 2013 05:14:05 -0700 (PDT)	[thread overview]
Message-ID: <3b90dcd9-51d3-4e8d-a212-4e40646abae0@googlegroups.com> (raw)
In-Reply-To: <mailman.446.1369622948.22516.help-gnu-emacs@gnu.org>

On Monday, May 27, 2013 3:48:54 AM UTC+1, Dmitry Gutov wrote:

> The main problem as I see it, is how to output the difference
> 
> information in case of mismatch. Saying "these pics are different, go
> 
> look at them yourself" isn't very helpful for test-driven development.
> 
> 
> 
> This would extend to arrays of glyphs, too, maybe even to a larger
> 
> degree (haven't thought of that before).

If you want to quickly become aware of differences between two images, you can switch between them - human eyes are very good at detecting movement.

Further, some image formats are quite straight forward (like BMP, if I'm not mistaken). It should be possible to implement a cropping function. It should also be possible to only display the rectangle which is different (with some padding). I guess this could be made into an extension to ERT, and images could be dumped along with other errors.

Evgeni


  parent reply	other threads:[~2013-05-27 12:14 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-25 19:36 Render a buffer or string to a simpler string? Dmitry Gutov
2013-05-25 20:58 ` Eli Zaretskii
2013-05-25 21:46   ` Dmitry Gutov
2013-05-26  2:50     ` Eli Zaretskii
2013-05-26  3:38       ` Dmitry Gutov
2013-05-26 15:11         ` Eli Zaretskii
2013-05-26 15:40           ` Dmitry Gutov
2013-05-26 16:15             ` Eli Zaretskii
2013-05-26 23:20               ` Dmitry Gutov
     [not found]             ` <mailman.418.1369584930.22516.help-gnu-emacs@gnu.org>
2013-05-26 17:08               ` esabof
2013-05-26 23:36                 ` Dmitry Gutov
2013-05-26 17:16       ` Stefan Monnier
2013-05-26 23:28         ` Dmitry Gutov
     [not found]       ` <mailman.419.1369588606.22516.help-gnu-emacs@gnu.org>
2013-05-26 17:56         ` esabof
2013-05-27  2:47           ` Eli Zaretskii
2013-05-27  2:48           ` Dmitry Gutov
     [not found]           ` <mailman.445.1369622831.22516.help-gnu-emacs@gnu.org>
2013-05-27 11:59             ` esabof
     [not found]           ` <mailman.446.1369622948.22516.help-gnu-emacs@gnu.org>
2013-05-27 12:14             ` esabof [this message]
     [not found] <mailman.381.1369510626.22516.help-gnu-emacs@gnu.org>
2013-05-25 20:45 ` Barry Margolin

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