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Description: Use imagemagick's compare for the testsuite, and compare with fuzz
As changing colorspace might introduce rounding errors, a binary comparison
will lead to false failures in the test suite. This patch ceased to use cmp
but uses compare with a very low fuzz of 0.5% to see if the image is same, it
is used for all tests with convert_colorspace.
See also http://www.libpng.org/pub/png/spec/1.2/PNG-Encoders.html for
rationale.
Author: Tobias Frost <tobi@debian.org>
Forwarded: no (upstream BTS currently down)
Last-Update: 2018-04-13
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
--- a/test/test.sh
+++ b/test/test.sh
@@ -22,7 +22,7 @@
for k in 8 16; do
for p in PB PB2; do # this tests solid buffer vs. original
name=$i.$j.$k.out # no $p in the name, they should not differ
- run "./convert_color_space $j $k $p $i out/$name && cmp out/$name cmp/$name"
+ run "./convert_color_space $j $k $p $i out/$name && compare -verbose -metric AE -fuzz 0.5% out/$name cmp/$name null:"
done;
done;
done;
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