mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-11-11 12:17:14 +03:00
4de5477b61
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:
if __name__ == '__main__':
unittest.main()
To every test file. It is simply noise.
The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
269 lines
9.4 KiB
Python
269 lines
9.4 KiB
Python
from .helper import PillowTestCase, hopper
|
|
from PIL import Image, PdfParser
|
|
import io
|
|
import os
|
|
import os.path
|
|
import tempfile
|
|
import time
|
|
|
|
|
|
class TestFilePdf(PillowTestCase):
|
|
|
|
def helper_save_as_pdf(self, mode, **kwargs):
|
|
# Arrange
|
|
im = hopper(mode)
|
|
outfile = self.tempfile("temp_" + mode + ".pdf")
|
|
|
|
# Act
|
|
im.save(outfile, **kwargs)
|
|
|
|
# Assert
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
with PdfParser.PdfParser(outfile) as pdf:
|
|
if kwargs.get("append_images", False) or \
|
|
kwargs.get("append", False):
|
|
self.assertGreater(len(pdf.pages), 1)
|
|
else:
|
|
self.assertGreater(len(pdf.pages), 0)
|
|
|
|
return outfile
|
|
|
|
def test_monochrome(self):
|
|
# Arrange
|
|
mode = "1"
|
|
|
|
# Act / Assert
|
|
self.helper_save_as_pdf(mode)
|
|
|
|
def test_greyscale(self):
|
|
# Arrange
|
|
mode = "L"
|
|
|
|
# Act / Assert
|
|
self.helper_save_as_pdf(mode)
|
|
|
|
def test_rgb(self):
|
|
# Arrange
|
|
mode = "RGB"
|
|
|
|
# Act / Assert
|
|
self.helper_save_as_pdf(mode)
|
|
|
|
def test_p_mode(self):
|
|
# Arrange
|
|
mode = "P"
|
|
|
|
# Act / Assert
|
|
self.helper_save_as_pdf(mode)
|
|
|
|
def test_cmyk_mode(self):
|
|
# Arrange
|
|
mode = "CMYK"
|
|
|
|
# Act / Assert
|
|
self.helper_save_as_pdf(mode)
|
|
|
|
def test_unsupported_mode(self):
|
|
im = hopper("LA")
|
|
outfile = self.tempfile("temp_LA.pdf")
|
|
|
|
self.assertRaises(ValueError, im.save, outfile)
|
|
|
|
def test_save_all(self):
|
|
# Single frame image
|
|
self.helper_save_as_pdf("RGB", save_all=True)
|
|
|
|
# Multiframe image
|
|
im = Image.open("Tests/images/dispose_bgnd.gif")
|
|
|
|
outfile = self.tempfile('temp.pdf')
|
|
im.save(outfile, save_all=True)
|
|
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
|
|
# Append images
|
|
ims = [hopper()]
|
|
im.copy().save(outfile, save_all=True, append_images=ims)
|
|
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
|
|
# Test appending using a generator
|
|
def imGenerator(ims):
|
|
for im in ims:
|
|
yield im
|
|
im.save(outfile, save_all=True, append_images=imGenerator(ims))
|
|
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
|
|
# Append JPEG images
|
|
jpeg = Image.open("Tests/images/flower.jpg")
|
|
jpeg.save(outfile, save_all=True, append_images=[jpeg.copy()])
|
|
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
|
|
def test_multiframe_normal_save(self):
|
|
# Test saving a multiframe image without save_all
|
|
im = Image.open("Tests/images/dispose_bgnd.gif")
|
|
|
|
outfile = self.tempfile('temp.pdf')
|
|
im.save(outfile)
|
|
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
|
|
def test_pdf_open(self):
|
|
# fail on a buffer full of null bytes
|
|
self.assertRaises(
|
|
PdfParser.PdfFormatError,
|
|
PdfParser.PdfParser, buf=bytearray(65536))
|
|
|
|
# make an empty PDF object
|
|
with PdfParser.PdfParser() as empty_pdf:
|
|
self.assertEqual(len(empty_pdf.pages), 0)
|
|
self.assertEqual(len(empty_pdf.info), 0)
|
|
self.assertFalse(empty_pdf.should_close_buf)
|
|
self.assertFalse(empty_pdf.should_close_file)
|
|
|
|
# make a PDF file
|
|
pdf_filename = self.helper_save_as_pdf("RGB")
|
|
|
|
# open the PDF file
|
|
with PdfParser.PdfParser(filename=pdf_filename) as hopper_pdf:
|
|
self.assertEqual(len(hopper_pdf.pages), 1)
|
|
self.assertTrue(hopper_pdf.should_close_buf)
|
|
self.assertTrue(hopper_pdf.should_close_file)
|
|
|
|
# read a PDF file from a buffer with a non-zero offset
|
|
with open(pdf_filename, "rb") as f:
|
|
content = b"xyzzy" + f.read()
|
|
with PdfParser.PdfParser(buf=content, start_offset=5) as hopper_pdf:
|
|
self.assertEqual(len(hopper_pdf.pages), 1)
|
|
self.assertFalse(hopper_pdf.should_close_buf)
|
|
self.assertFalse(hopper_pdf.should_close_file)
|
|
|
|
# read a PDF file from an already open file
|
|
with open(pdf_filename, "rb") as f:
|
|
with PdfParser.PdfParser(f=f) as hopper_pdf:
|
|
self.assertEqual(len(hopper_pdf.pages), 1)
|
|
self.assertTrue(hopper_pdf.should_close_buf)
|
|
self.assertFalse(hopper_pdf.should_close_file)
|
|
|
|
def test_pdf_append_fails_on_nonexistent_file(self):
|
|
im = hopper("RGB")
|
|
temp_dir = tempfile.mkdtemp()
|
|
try:
|
|
self.assertRaises(IOError,
|
|
im.save,
|
|
os.path.join(temp_dir, "nonexistent.pdf"),
|
|
append=True)
|
|
finally:
|
|
os.rmdir(temp_dir)
|
|
|
|
def check_pdf_pages_consistency(self, pdf):
|
|
pages_info = pdf.read_indirect(pdf.pages_ref)
|
|
self.assertNotIn(b"Parent", pages_info)
|
|
self.assertIn(b"Kids", pages_info)
|
|
kids_not_used = pages_info[b"Kids"]
|
|
for page_ref in pdf.pages:
|
|
while True:
|
|
if page_ref in kids_not_used:
|
|
kids_not_used.remove(page_ref)
|
|
page_info = pdf.read_indirect(page_ref)
|
|
self.assertIn(b"Parent", page_info)
|
|
page_ref = page_info[b"Parent"]
|
|
if page_ref == pdf.pages_ref:
|
|
break
|
|
self.assertEqual(pdf.pages_ref, page_info[b"Parent"])
|
|
self.assertEqual(kids_not_used, [])
|
|
|
|
def test_pdf_append(self):
|
|
# make a PDF file
|
|
pdf_filename = self.helper_save_as_pdf("RGB", producer="PdfParser")
|
|
|
|
# open it, check pages and info
|
|
with PdfParser.PdfParser(pdf_filename, mode="r+b") as pdf:
|
|
self.assertEqual(len(pdf.pages), 1)
|
|
self.assertEqual(len(pdf.info), 4)
|
|
self.assertEqual(pdf.info.Title, os.path.splitext(
|
|
os.path.basename(pdf_filename)
|
|
)[0])
|
|
self.assertEqual(pdf.info.Producer, "PdfParser")
|
|
self.assertIn(b"CreationDate", pdf.info)
|
|
self.assertIn(b"ModDate", pdf.info)
|
|
self.check_pdf_pages_consistency(pdf)
|
|
|
|
# append some info
|
|
pdf.info.Title = "abc"
|
|
pdf.info.Author = "def"
|
|
pdf.info.Subject = u"ghi\uABCD"
|
|
pdf.info.Keywords = "qw)e\\r(ty"
|
|
pdf.info.Creator = "hopper()"
|
|
pdf.start_writing()
|
|
pdf.write_xref_and_trailer()
|
|
|
|
# open it again, check pages and info again
|
|
with PdfParser.PdfParser(pdf_filename) as pdf:
|
|
self.assertEqual(len(pdf.pages), 1)
|
|
self.assertEqual(len(pdf.info), 8)
|
|
self.assertEqual(pdf.info.Title, "abc")
|
|
self.assertIn(b"CreationDate", pdf.info)
|
|
self.assertIn(b"ModDate", pdf.info)
|
|
self.check_pdf_pages_consistency(pdf)
|
|
|
|
# append two images
|
|
mode_CMYK = hopper("CMYK")
|
|
mode_P = hopper("P")
|
|
mode_CMYK.save(pdf_filename,
|
|
append=True, save_all=True, append_images=[mode_P])
|
|
|
|
# open the PDF again, check pages and info again
|
|
with PdfParser.PdfParser(pdf_filename) as pdf:
|
|
self.assertEqual(len(pdf.pages), 3)
|
|
self.assertEqual(len(pdf.info), 8)
|
|
self.assertEqual(PdfParser.decode_text(pdf.info[b"Title"]), "abc")
|
|
self.assertEqual(pdf.info.Title, "abc")
|
|
self.assertEqual(pdf.info.Producer, "PdfParser")
|
|
self.assertEqual(pdf.info.Keywords, "qw)e\\r(ty")
|
|
self.assertEqual(pdf.info.Subject, u"ghi\uABCD")
|
|
self.assertIn(b"CreationDate", pdf.info)
|
|
self.assertIn(b"ModDate", pdf.info)
|
|
self.check_pdf_pages_consistency(pdf)
|
|
|
|
def test_pdf_info(self):
|
|
# make a PDF file
|
|
pdf_filename = self.helper_save_as_pdf(
|
|
"RGB", title="title", author="author", subject="subject",
|
|
keywords="keywords", creator="creator", producer="producer",
|
|
creationDate=time.strptime("2000", "%Y"),
|
|
modDate=time.strptime("2001", "%Y"))
|
|
|
|
# open it, check pages and info
|
|
with PdfParser.PdfParser(pdf_filename) as pdf:
|
|
self.assertEqual(len(pdf.info), 8)
|
|
self.assertEqual(pdf.info.Title, "title")
|
|
self.assertEqual(pdf.info.Author, "author")
|
|
self.assertEqual(pdf.info.Subject, "subject")
|
|
self.assertEqual(pdf.info.Keywords, "keywords")
|
|
self.assertEqual(pdf.info.Creator, "creator")
|
|
self.assertEqual(pdf.info.Producer, "producer")
|
|
self.assertEqual(pdf.info.CreationDate,
|
|
time.strptime("2000", "%Y"))
|
|
self.assertEqual(pdf.info.ModDate, time.strptime("2001", "%Y"))
|
|
self.check_pdf_pages_consistency(pdf)
|
|
|
|
def test_pdf_append_to_bytesio(self):
|
|
im = hopper("RGB")
|
|
f = io.BytesIO()
|
|
im.save(f, format="PDF")
|
|
initial_size = len(f.getvalue())
|
|
self.assertGreater(initial_size, 0)
|
|
im = hopper("P")
|
|
f = io.BytesIO(f.getvalue())
|
|
im.save(f, format="PDF", append=True)
|
|
self.assertGreater(len(f.getvalue()), initial_size)
|