Testing
On Fri, Mar 13, 2009 at 2:38 PM, Henrik Akesson wrote:
I'd like to set up some regression tests before doing any changes to the
code.
You agree on using the glib test framework?
I'll do it by applying some operations on an input image file and comparing
the resulting output image file with a reference. However, I suppose that
this is not platform independent. There would be slight differences in the
precision of the calculations, resulting in slightly different pixel values
and files that are not at all comparable.
Any ideas/suggestions?
The gallery in docs/ could be extended to also store reference images.
I've been using this setup to look for rendering and performance
regressions (it used to even be built and have a browsable
multi-architecture continous build and testing at Open Source
Development Labs but that effort was shut down with some of OSDLs
cut-backs in Engineering operations).
There is a set of regression tests for GeglBuffer in tests/buffer
which outputs grayscale images as unicode and uses unified diffs to
detects differences, I think Martin Nordholts has mentioned that he
wants to port these tests to use glib test framework.
/Øyvind K.
