def test_write_metadata(self):
""" Test metadata writing through the python code """
img = Image.open("Tests/images/hopper.tif")
f = self.tempfile("temp.tiff")
img.save(f, tiffinfo=img.tag)
with Image.open(f) as loaded:
original = img.tag_v2.named()
reloaded = loaded.tag_v2.named()
for k, v in original.items():
if isinstance(v, IFDRational):
original[k] = IFDRational(*_limit_rational(v, 2**31))
elif isinstance(v, tuple) and isinstance(v[0], IFDRational):
original[k] = tuple(
IFDRational(*_limit_rational(elt, 2**31)) for elt in v)
ignored = [
"StripByteCounts", "RowsPerStrip", "PageNumber", "StripOffsets"
]
for tag, value in reloaded.items():
if tag in ignored:
continue
if isinstance(original[tag], tuple) and isinstance(
original[tag][0], IFDRational):
# Need to compare element by element in the tuple,
# not comparing tuples of object references
self.assert_deep_equal(
original[tag],
value,
"{} didn't roundtrip, {}, {}".format(
tag, original[tag], value),
)
else:
self.assertEqual(
original[tag],
value,
"{} didn't roundtrip, {}, {}".format(
tag, original[tag], value),
)
for tag, value in original.items():
if tag not in ignored:
self.assertEqual(value, reloaded[tag],
"%s didn't roundtrip" % tag)
def test_write_metadata(self):
""" Test metadata writing through the python code """
img = Image.open('Tests/images/hopper.tif')
f = self.tempfile('temp.tiff')
img.save(f, tiffinfo=img.tag)
loaded = Image.open(f)
original = img.tag_v2.named()
reloaded = loaded.tag_v2.named()
for k, v in original.items():
if type(v) == IFDRational:
original[k] = IFDRational(*_limit_rational(v, 2**31))
if type(v) == tuple and \
type(v[0]) == IFDRational:
original[k] = tuple([IFDRational(
*_limit_rational(elt, 2**31)) for elt in v])
ignored = ['StripByteCounts', 'RowsPerStrip',
'PageNumber', 'StripOffsets']
for tag, value in reloaded.items():
if tag in ignored:
continue
if (type(original[tag]) == tuple
and type(original[tag][0]) == IFDRational):
# Need to compare element by element in the tuple,
# not comparing tuples of object references
self.assert_deep_equal(original[tag],
value,
"%s didn't roundtrip, %s, %s" %
(tag, original[tag], value))
else:
self.assertEqual(original[tag],
value,
"%s didn't roundtrip, %s, %s" %
(tag, original[tag], value))
for tag, value in original.items():
if tag not in ignored:
self.assertEqual(
value, reloaded[tag], "%s didn't roundtrip" % tag)
def test_write_metadata(self):
""" Test metadata writing through the python code """
img = Image.open('Tests/images/hopper.tif')
f = self.tempfile('temp.tiff')
img.save(f, tiffinfo=img.tag)
loaded = Image.open(f)
original = img.tag_v2.named()
reloaded = loaded.tag_v2.named()
for k, v in original.items():
if type(v) == IFDRational:
original[k] = IFDRational(*_limit_rational(v, 2**31))
if type(v) == tuple and \
type(v[0]) == IFDRational:
original[k] = tuple([IFDRational(
*_limit_rational(elt, 2**31)) for elt in v])
ignored = ['StripByteCounts', 'RowsPerStrip',
'PageNumber', 'StripOffsets']
for tag, value in reloaded.items():
if tag in ignored:
continue
if (type(original[tag]) == tuple
and type(original[tag][0]) == IFDRational):
# Need to compare element by element in the tuple,
# not comparing tuples of object references
self.assert_deep_equal(original[tag],
value,
"%s didn't roundtrip, %s, %s" %
(tag, original[tag], value))
else:
self.assertEqual(original[tag],
value,
"%s didn't roundtrip, %s, %s" %
(tag, original[tag], value))
for tag, value in original.items():
if tag not in ignored:
self.assertEqual(
value, reloaded[tag], "%s didn't roundtrip" % tag)
def test__limit_rational_float(self):
from PIL.TiffImagePlugin import _limit_rational
value = 22.3
ret = _limit_rational(value, 65536)
self.assertEqual(ret, (223, 10))
def test__limit_rational_int(self):
from PIL.TiffImagePlugin import _limit_rational
value = 34
ret = _limit_rational(value, 65536)
self.assertEqual(ret, (34, 1))
def test__limit_rational_float(self):
from PIL.TiffImagePlugin import _limit_rational
value = 22.3
ret = _limit_rational(value, 65536)
self.assertEqual(ret, (223, 10))
def test__limit_rational_int(self):
from PIL.TiffImagePlugin import _limit_rational
value = 34
ret = _limit_rational(value, 65536)
self.assertEqual(ret, (34, 1))
