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error test for bw compression on RGB file

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wiredfool 2013-11-05 20:59:57 -08:00
parent a4a9b36ed0
commit 1d6f6ffa10
1 changed files with 8 additions and 0 deletions
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8
Tests/test_file_libtiff.py
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@ -212,3 +212,11 @@ def test_cmyk_save():
im.save(out, compression='tiff_adobe_deflate')
im2 = Image.open(out)
assert_image_equal(im, im2)
def test_bw_compression_wRGB():
im = lena('RGB')
out = tempfile('temp.tif')
assert_exception(IOError, lambda: im.save(out, compression='tiff_ccitt'))
assert_exception(IOError, lambda: im.save(out, compression='group3'))
assert_exception(IOError, lambda: im.save(out, compression='group4'))