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Don't leak test.jpeg into cwd while testing. #9486

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Merged
merged 1 commit into from
Oct 20, 2017
Merged

Don't leak test.jpeg into cwd while testing. #9486

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12 changes: 5 additions & 7 deletions lib/matplotlib/tests/test_agg.py
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Original file line number Diff line number Diff line change
Expand Up @@ -238,12 +238,10 @@ def test_chunksize():

@pytest.mark.backend('Agg')
def test_jpeg_dpi():
try:
from PIL import Image
except Exception:
pytest.skip("Could not import PIL")
# Check that dpi is set correctly in jpg files
Image = pytest.importorskip("PIL.Image")
# Check that dpi is set correctly in jpg files.
plt.plot([0, 1, 2], [0, 1, 0])
plt.savefig('test.jpg', dpi=200)
im = Image.open("test.jpg")
buf = io.BytesIO()
plt.savefig(buf, format="jpg", dpi=200)
im = Image.open(buf)
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I do not remember details, but from my previous experience this should not work without a buf.seek(0) call.
However CI is fine...

assert im.info['dpi'] == (200, 200)