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Description: Fix test failure with wand 0.4.1+
wand 0.4.1 added an Image.destroy()
(https://sources.debian.net/src/wand/0.4.4-1/wand/image.py/#L2760) that
iterates over self.sequence (the frames of an animation) to free their
memory; this throws an exception on single images (where
self.sequence=None), but as this is called from __del__, this
exception is warned about then ignored
(https://docs.python.org/3/reference/datamodel.html#object.__del__),
and hence is not an error in normal use.
However, blockdiag tests that use capture_stderr fail on any output
containing "Traceback", including this warning message.
This patch ignores this message to allow blockdiag to build.
Author: Rebecca Palmer <rebecca_palmer@zoho.com>
Bug-Debian: https://bugs.debian.org/848748
Forwarded: no
Index: blockdiag-2.0.1+dfsg/src/blockdiag/tests/utils.py
===================================================================
--- blockdiag-2.0.1+dfsg.orig/src/blockdiag/tests/utils.py 2021-01-31 23:23:07.242772141 +0900
+++ blockdiag-2.0.1+dfsg/src/blockdiag/tests/utils.py 2021-01-31 23:23:07.238772142 +0900
@@ -74,7 +74,14 @@
func(*args, **kwargs)
- if re.search('(ERROR|Traceback)', sys.stderr.getvalue()):
+ filtered_stderr=re.sub(r"""Exception ignored in: <bound method Resource\.__del__ of <wand\.image\.Image: \(empty\)>>
+Traceback \(most recent call last\):
+ File "/usr/lib/python3/dist-packages/wand/resource\.py", line [0-9]+, in __del__
+ self\.destroy\(\)
+ File "/usr/lib/python3/dist-packages/wand/image\.py", line [0-9]+, in destroy
+ for i in range\(0, len\(self\.sequence\)\):
+TypeError: object of type 'NoneType' has no len\(\)""","",sys.stderr.getvalue())#this is the expected result of freeing a single image (as opposed to an animation) in wand 0.4, not a blockdiag bug - #848748
+ if re.search('(ERROR|Traceback)', filtered_stderr):
raise AssertionError('Caught error')
finally:
if sys.stderr.getvalue():
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