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Fix #5302: Proper alpha-blending for jpeg #5324

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Merged
merged 5 commits into from
Oct 28, 2015
Merged

Fix #5302: Proper alpha-blending for jpeg #5324

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bdea63d
Fix #5302: Proper alpha-blending for jpeg
mdboom Oct 26, 2015
3dea66d
Get background color from savefig.facecolor
mdboom Oct 27, 2015
183f246
Fix test
mdboom Oct 27, 2015
737da1e
Add prints to test
mdboom Oct 27, 2015
fb6ff8a
Adjust acceptable range
mdboom Oct 28, 2015
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Fix test
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@mdboom
mdboom committed Oct 27, 2015
commit 183f246cfca1d804d7b905b324d0fe610e2322cb
4 changes: 2 additions & 2 deletions lib/matplotlib/tests/test_image.py
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Expand Up @@ -473,10 +473,10 @@ def test_jpeg_alpha():

# If this fails, there will be only one color (all black). If this
# is working, we should have all 256 shades of grey represented.
assert len(image.getcolors(256)) == 179
assert len(image.getcolors(256)) >= 170 and len(image.getcolors(256)) <= 180
# The fully transparent part should be red, not white or black
# or anything else
assert image.getpixel(0, 0) == (0, 0, 255)
assert image.getpixel((0, 0)) == (254, 0, 0)


if __name__=='__main__':
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