def test_additional_metadata(self, tmp_path):
# these should not crash. Seriously dummy data, most of it doesn't make
# any sense, so we're running up against limits where we're asking
# libtiff to do stupid things.
# Get the list of the ones that we should be able to write
core_items = {
tag: info
for tag, info in ((s, TiffTags.lookup(s))
for s in TiffTags.LIBTIFF_CORE)
if info.type is not None
}
# Exclude ones that have special meaning
# that we're already testing them
with Image.open("Tests/images/hopper_g4.tif") as im:
for tag in im.tag_v2:
try:
del core_items[tag]
except KeyError:
pass
del core_items[320] # colormap is special, tested below
# Type codes:
# 2: "ascii",
# 3: "short",
# 4: "long",
# 5: "rational",
# 12: "double",
# Type: dummy value
values = {
2: "test",
3: 1,
4: 2**20,
5: TiffImagePlugin.IFDRational(100, 1),
12: 1.05,
}
new_ifd = TiffImagePlugin.ImageFileDirectory_v2()
for tag, info in core_items.items():
if info.length == 1:
new_ifd[tag] = values[info.type]
if info.length == 0:
new_ifd[tag] = tuple(values[info.type] for _ in range(3))
else:
new_ifd[tag] = tuple(values[info.type]
for _ in range(info.length))
# Extra samples really doesn't make sense in this application.
del new_ifd[338]
out = str(tmp_path / "temp.tif")
TiffImagePlugin.WRITE_LIBTIFF = True
im.save(out, tiffinfo=new_ifd)
TiffImagePlugin.WRITE_LIBTIFF = False
def test_additional_metadata(self):
# these should not crash. Seriously dummy data, most of it doesn't make
# any sense, so we're running up against limits where we're asking
# libtiff to do stupid things.
# Get the list of the ones that we should be able to write
core_items = dict((tag, info)
for tag, info in [(s, TiffTags.lookup(s))
for s in TiffTags.LIBTIFF_CORE]
if info.type is not None)
# Exclude ones that have special meaning
# that we're already testing them
im = Image.open('Tests/images/hopper_g4.tif')
for tag in im.tag_v2.keys():
try:
del (core_items[tag])
except:
pass
# Type codes:
# 2: "ascii",
# 3: "short",
# 4: "long",
# 5: "rational",
# 12: "double",
# type: dummy value
values = {
2: 'test',
3: 1,
4: 2**20,
5: TiffImagePlugin.IFDRational(100, 1),
12: 1.05
}
new_ifd = TiffImagePlugin.ImageFileDirectory_v2()
for tag, info in core_items.items():
if info.length == 1:
new_ifd[tag] = values[info.type]
if info.length == 0:
new_ifd[tag] = tuple(values[info.type] for _ in range(3))
else:
new_ifd[tag] = tuple(values[info.type]
for _ in range(info.length))
# Extra samples really doesn't make sense in this application.
del (new_ifd[338])
out = self.tempfile("temp.tif")
TiffImagePlugin.WRITE_LIBTIFF = True
im.save(out, tiffinfo=new_ifd)
TiffImagePlugin.WRITE_LIBTIFF = False
def test_additional_metadata(self):
# these should not crash. Seriously dummy data, most of it doesn't make
# any sense, so we're running up against limits where we're asking
# libtiff to do stupid things.
# Get the list of the ones that we should be able to write
core_items = {tag: info for tag, info in ((s, TiffTags.lookup(s)) for s
in TiffTags.LIBTIFF_CORE)
if info.type is not None}
# Exclude ones that have special meaning
# that we're already testing them
im = Image.open('Tests/images/hopper_g4.tif')
for tag in im.tag_v2:
try:
del core_items[tag]
except KeyError:
pass
# Type codes:
# 2: "ascii",
# 3: "short",
# 4: "long",
# 5: "rational",
# 12: "double",
# Type: dummy value
values = {2: 'test',
3: 1,
4: 2**20,
5: TiffImagePlugin.IFDRational(100, 1),
12: 1.05}
new_ifd = TiffImagePlugin.ImageFileDirectory_v2()
for tag, info in core_items.items():
if info.length == 1:
new_ifd[tag] = values[info.type]
if info.length == 0:
new_ifd[tag] = tuple(values[info.type] for _ in range(3))
else:
new_ifd[tag] = tuple(values[info.type]
for _ in range(info.length))
# Extra samples really doesn't make sense in this application.
del new_ifd[338]
out = self.tempfile("temp.tif")
TiffImagePlugin.WRITE_LIBTIFF = True
im.save(out, tiffinfo=new_ifd)
TiffImagePlugin.WRITE_LIBTIFF = False