Pillow/Tests/test_imagecms.py

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from tester import *
from PIL import Image
try:
from PIL import ImageCms
except ImportError:
skip()
SRGB = "Tests/icc/sRGB.icm"
def test_sanity():
# basic smoke test.
# this mostly follows the cms_test outline.
v = ImageCms.versions() # should return four strings
assert_equal(v[0], '0.1.0 pil')
assert_equal(list(map(type, v)), [str, str, str, str])
# internal version number
assert_match(ImageCms.core.littlecms_version, "\d+\.\d+$")
i = ImageCms.profileToProfile(lena(), SRGB, SRGB)
assert_image(i, "RGB", (128, 128))
t = ImageCms.buildTransform(SRGB, SRGB, "RGB", "RGB")
i = ImageCms.applyTransform(lena(), t)
assert_image(i, "RGB", (128, 128))
p = ImageCms.createProfile("sRGB")
o = ImageCms.getOpenProfile(SRGB)
t = ImageCms.buildTransformFromOpenProfiles(p, o, "RGB", "RGB")
i = ImageCms.applyTransform(lena(), t)
assert_image(i, "RGB", (128, 128))
t = ImageCms.buildProofTransform(SRGB, SRGB, SRGB, "RGB", "RGB")
assert_equal(t.inputMode, "RGB")
assert_equal(t.outputMode, "RGB")
i = ImageCms.applyTransform(lena(), t)
assert_image(i, "RGB", (128, 128))
# get profile information for file
assert_equal(ImageCms.getProfileName(SRGB).strip(),
'IEC 61966-2.1 Default RGB colour space - sRGB')
assert_equal(ImageCms.getProfileInfo(SRGB).splitlines(),
['sRGB IEC61966-2.1', '',
'Copyright (c) 1998 Hewlett-Packard Company', '',
'WhitePoint : D65 (daylight)', '',
'Tests/icc/sRGB.icm'])
assert_equal(ImageCms.getDefaultIntent(SRGB), 0)
assert_equal(ImageCms.isIntentSupported(
SRGB, ImageCms.INTENT_ABSOLUTE_COLORIMETRIC,
ImageCms.DIRECTION_INPUT), 1)
# same, using profile object
p = ImageCms.createProfile("sRGB")
assert_equal(ImageCms.getProfileName(p).strip(),
'sRGB built-in - (lcms internal)')
assert_equal(ImageCms.getProfileInfo(p).splitlines(),
['sRGB built-in', '', 'WhitePoint : D65 (daylight)', '', ''])
assert_equal(ImageCms.getDefaultIntent(p), 0)
assert_equal(ImageCms.isIntentSupported(
p, ImageCms.INTENT_ABSOLUTE_COLORIMETRIC,
ImageCms.DIRECTION_INPUT), 1)
# extensions
i = Image.open("Tests/images/rgb.jpg")
p = ImageCms.getOpenProfile(BytesIO(i.info["icc_profile"]))
assert_equal(ImageCms.getProfileName(p).strip(),
'IEC 61966-2.1 Default RGB colour space - sRGB')
# the procedural pyCMS API uses PyCMSError for all sorts of errors
assert_exception(ImageCms.PyCMSError, lambda: ImageCms.profileToProfile(lena(), "foo", "bar"))
assert_exception(ImageCms.PyCMSError, lambda: ImageCms.buildTransform("foo", "bar", "RGB", "RGB"))
assert_exception(ImageCms.PyCMSError, lambda: ImageCms.getProfileName(None))
assert_exception(ImageCms.PyCMSError, lambda: ImageCms.isIntentSupported(SRGB, None, None))
# test PointTransform convenience API
im = lena().point(t)
# try fetching the profile for the current display device
assert_no_exception(lambda: ImageCms.get_display_profile())