mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-09-21 19:38:57 +03:00
7da17ad41e
The previous test configuration made it difficult to run a single test with the pytest CLI. There were two major issues: - The Tests directory was not a package. It now includes a __init__.py file and imports from other tests modules are done with relative imports. - setup.cfg always specified the Tests directory. So even if a specific test were specified as a CLI arg, this configuration would also always include all tests. This configuration has been removed to allow specifying a single test on the command line. Contributors can now run specific tests with a single command such as: $ tox -e py37 -- Tests/test_file_pdf.py::TestFilePdf.test_rgb This makes it easy and faster to iterate on a single test failure and is very familiar to those that have previously used tox and pytest. When running tox or pytest with no arguments, they still discover and runs all tests in the Tests directory.
254 lines
9.7 KiB
Python
254 lines
9.7 KiB
Python
import io
|
|
import struct
|
|
|
|
from .helper import unittest, PillowTestCase, hopper
|
|
|
|
from PIL import Image, TiffImagePlugin, TiffTags
|
|
from PIL.TiffImagePlugin import _limit_rational, IFDRational
|
|
|
|
tag_ids = {info.name: info.value for info in TiffTags.TAGS_V2.values()}
|
|
|
|
|
|
class TestFileTiffMetadata(PillowTestCase):
|
|
|
|
def test_rt_metadata(self):
|
|
""" Test writing arbitrary metadata into the tiff image directory
|
|
Use case is ImageJ private tags, one numeric, one arbitrary
|
|
data. https://github.com/python-pillow/Pillow/issues/291
|
|
"""
|
|
|
|
img = hopper()
|
|
|
|
# Behaviour change: re #1416
|
|
# Pre ifd rewrite, ImageJMetaData was being written as a string(2),
|
|
# Post ifd rewrite, it's defined as arbitrary bytes(7). It should
|
|
# roundtrip with the actual bytes, rather than stripped text
|
|
# of the premerge tests.
|
|
#
|
|
# For text items, we still have to decode('ascii','replace') because
|
|
# the tiff file format can't take 8 bit bytes in that field.
|
|
|
|
basetextdata = "This is some arbitrary metadata for a text field"
|
|
bindata = basetextdata.encode('ascii') + b" \xff"
|
|
textdata = basetextdata + " " + chr(255)
|
|
reloaded_textdata = basetextdata + " ?"
|
|
floatdata = 12.345
|
|
doubledata = 67.89
|
|
info = TiffImagePlugin.ImageFileDirectory()
|
|
|
|
ImageJMetaData = tag_ids['ImageJMetaData']
|
|
ImageJMetaDataByteCounts = tag_ids['ImageJMetaDataByteCounts']
|
|
ImageDescription = tag_ids['ImageDescription']
|
|
|
|
info[ImageJMetaDataByteCounts] = len(bindata)
|
|
info[ImageJMetaData] = bindata
|
|
info[tag_ids['RollAngle']] = floatdata
|
|
info.tagtype[tag_ids['RollAngle']] = 11
|
|
info[tag_ids['YawAngle']] = doubledata
|
|
info.tagtype[tag_ids['YawAngle']] = 12
|
|
|
|
info[ImageDescription] = textdata
|
|
|
|
f = self.tempfile("temp.tif")
|
|
|
|
img.save(f, tiffinfo=info)
|
|
|
|
loaded = Image.open(f)
|
|
|
|
self.assertEqual(loaded.tag[ImageJMetaDataByteCounts], (len(bindata),))
|
|
self.assertEqual(loaded.tag_v2[ImageJMetaDataByteCounts],
|
|
(len(bindata),))
|
|
|
|
self.assertEqual(loaded.tag[ImageJMetaData], bindata)
|
|
self.assertEqual(loaded.tag_v2[ImageJMetaData], bindata)
|
|
|
|
self.assertEqual(loaded.tag[ImageDescription], (reloaded_textdata,))
|
|
self.assertEqual(loaded.tag_v2[ImageDescription], reloaded_textdata)
|
|
|
|
loaded_float = loaded.tag[tag_ids['RollAngle']][0]
|
|
self.assertAlmostEqual(loaded_float, floatdata, places=5)
|
|
loaded_double = loaded.tag[tag_ids['YawAngle']][0]
|
|
self.assertAlmostEqual(loaded_double, doubledata)
|
|
|
|
# check with 2 element ImageJMetaDataByteCounts, issue #2006
|
|
|
|
info[ImageJMetaDataByteCounts] = (8, len(bindata) - 8)
|
|
img.save(f, tiffinfo=info)
|
|
loaded = Image.open(f)
|
|
|
|
self.assertEqual(loaded.tag[ImageJMetaDataByteCounts],
|
|
(8, len(bindata) - 8))
|
|
self.assertEqual(loaded.tag_v2[ImageJMetaDataByteCounts],
|
|
(8, len(bindata) - 8))
|
|
|
|
def test_read_metadata(self):
|
|
img = Image.open('Tests/images/hopper_g4.tif')
|
|
|
|
self.assertEqual({'YResolution': IFDRational(4294967295, 113653537),
|
|
'PlanarConfiguration': 1,
|
|
'BitsPerSample': (1,),
|
|
'ImageLength': 128,
|
|
'Compression': 4,
|
|
'FillOrder': 1,
|
|
'RowsPerStrip': 128,
|
|
'ResolutionUnit': 3,
|
|
'PhotometricInterpretation': 0,
|
|
'PageNumber': (0, 1),
|
|
'XResolution': IFDRational(4294967295, 113653537),
|
|
'ImageWidth': 128,
|
|
'Orientation': 1,
|
|
'StripByteCounts': (1968,),
|
|
'SamplesPerPixel': 1,
|
|
'StripOffsets': (8,)
|
|
}, img.tag_v2.named())
|
|
|
|
self.assertEqual({'YResolution': ((4294967295, 113653537),),
|
|
'PlanarConfiguration': (1,),
|
|
'BitsPerSample': (1,),
|
|
'ImageLength': (128,),
|
|
'Compression': (4,),
|
|
'FillOrder': (1,),
|
|
'RowsPerStrip': (128,),
|
|
'ResolutionUnit': (3,),
|
|
'PhotometricInterpretation': (0,),
|
|
'PageNumber': (0, 1),
|
|
'XResolution': ((4294967295, 113653537),),
|
|
'ImageWidth': (128,),
|
|
'Orientation': (1,),
|
|
'StripByteCounts': (1968,),
|
|
'SamplesPerPixel': (1,),
|
|
'StripOffsets': (8,)
|
|
}, img.tag.named())
|
|
|
|
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 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,
|
|
"%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_no_duplicate_50741_tag(self):
|
|
self.assertEqual(tag_ids['MakerNoteSafety'], 50741)
|
|
self.assertEqual(tag_ids['BestQualityScale'], 50780)
|
|
|
|
def test_empty_metadata(self):
|
|
f = io.BytesIO(b'II*\x00\x08\x00\x00\x00')
|
|
head = f.read(8)
|
|
info = TiffImagePlugin.ImageFileDirectory(head)
|
|
# Should not raise struct.error.
|
|
self.assert_warning(UserWarning, info.load, f)
|
|
|
|
def test_iccprofile(self):
|
|
# https://github.com/python-pillow/Pillow/issues/1462
|
|
im = Image.open('Tests/images/hopper.iccprofile.tif')
|
|
out = self.tempfile('temp.tiff')
|
|
|
|
im.save(out)
|
|
reloaded = Image.open(out)
|
|
self.assertNotIsInstance(im.info['icc_profile'], tuple)
|
|
self.assertEqual(im.info['icc_profile'], reloaded.info['icc_profile'])
|
|
|
|
def test_iccprofile_binary(self):
|
|
# https://github.com/python-pillow/Pillow/issues/1526
|
|
# We should be able to load this,
|
|
# but probably won't be able to save it.
|
|
|
|
im = Image.open('Tests/images/hopper.iccprofile_binary.tif')
|
|
self.assertEqual(im.tag_v2.tagtype[34675], 1)
|
|
self.assertTrue(im.info['icc_profile'])
|
|
|
|
def test_iccprofile_save_png(self):
|
|
im = Image.open('Tests/images/hopper.iccprofile.tif')
|
|
outfile = self.tempfile('temp.png')
|
|
im.save(outfile)
|
|
|
|
def test_iccprofile_binary_save_png(self):
|
|
im = Image.open('Tests/images/hopper.iccprofile_binary.tif')
|
|
outfile = self.tempfile('temp.png')
|
|
im.save(outfile)
|
|
|
|
def test_exif_div_zero(self):
|
|
im = hopper()
|
|
info = TiffImagePlugin.ImageFileDirectory_v2()
|
|
info[41988] = TiffImagePlugin.IFDRational(0, 0)
|
|
|
|
out = self.tempfile('temp.tiff')
|
|
im.save(out, tiffinfo=info, compression='raw')
|
|
|
|
reloaded = Image.open(out)
|
|
self.assertEqual(0, reloaded.tag_v2[41988].numerator)
|
|
self.assertEqual(0, reloaded.tag_v2[41988].denominator)
|
|
|
|
def test_expty_values(self):
|
|
data = io.BytesIO(
|
|
b'II*\x00\x08\x00\x00\x00\x03\x00\x1a\x01\x05\x00\x00\x00\x00\x00'
|
|
b'\x00\x00\x00\x00\x1b\x01\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00'
|
|
b'\x98\x82\x02\x00\x07\x00\x00\x002\x00\x00\x00\x00\x00\x00\x00a '
|
|
b'text\x00\x00')
|
|
head = data.read(8)
|
|
info = TiffImagePlugin.ImageFileDirectory_v2(head)
|
|
info.load(data)
|
|
# Should not raise ValueError.
|
|
info = dict(info)
|
|
self.assertIn(33432, info)
|
|
|
|
def test_PhotoshopInfo(self):
|
|
im = Image.open('Tests/images/issue_2278.tif')
|
|
|
|
self.assertIsInstance(im.tag_v2[34377], bytes)
|
|
out = self.tempfile('temp.tiff')
|
|
im.save(out)
|
|
reloaded = Image.open(out)
|
|
self.assertIsInstance(reloaded.tag_v2[34377], bytes)
|
|
|
|
def test_too_many_entries(self):
|
|
ifd = TiffImagePlugin.ImageFileDirectory_v2()
|
|
|
|
# 277: ("SamplesPerPixel", SHORT, 1),
|
|
ifd._tagdata[277] = struct.pack('hh', 4, 4)
|
|
ifd.tagtype[277] = TiffTags.SHORT
|
|
|
|
# Should not raise ValueError.
|
|
self.assert_warning(UserWarning, lambda: ifd[277])
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|