python-pillow / Pillow / 3973

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EMF: support negative bounding box coordinates (#2249)

* EMF: support negative bounding box coordinates

Similar to placeable WMF, bounding box coordinates
should be interpreted as signed integer, otherwise
opening EMF file with negative (x0,y0) fails.

* Basic load tests for WMF and EMF formats

* WMF/WMF tests: just test open(), not load()

Not sure why load() fails on Debian build. Well, at least we can test
open().

* WMF/EMF: Unpack signed integers using unpack()

* WMF/EMF: Compare to reference PNG rendering

* EMF/WMF comparison: use assert_image_similar()

* Use similarity epsilon 0.5 for WMF, as vector rendering looks different across Windows platforms

* Trigger rebuild

11 of 11 new or added lines in 2 files covered. (100.0%)

17007 of 21569 relevant lines covered (78.85%)

848205.31 hits per line