forked from josch/img2pdf
src/tests/__init__.py: add support for multiframe gif tests
This commit is contained in:
parent
e20fe4944c
commit
8476e333cd
1 changed files with 112 additions and 86 deletions
|
@ -476,36 +476,63 @@ def test_suite():
|
|||
x = PdfReader(StringIO(convert_load(output)))
|
||||
self.assertEqual(sorted(x.keys()), [PdfName.Info, PdfName.Root,
|
||||
PdfName.Size])
|
||||
self.assertIn(x.Root.Pages.Count, ('1', '2'))
|
||||
if len(x.Root.Pages.Kids) == '1':
|
||||
self.assertEqual(x.Size, '7')
|
||||
self.assertEqual(len(x.Root.Pages.Kids), 1)
|
||||
elif len(x.Root.Pages.Kids) == '2':
|
||||
self.assertEqual(x.Size, '10')
|
||||
self.assertEqual(len(x.Root.Pages.Kids), 2)
|
||||
self.assertEqual(x.Info, {})
|
||||
self.assertEqual(sorted(x.Root.keys()), [PdfName.Pages,
|
||||
PdfName.Type])
|
||||
self.assertEqual(x.Root.Type, PdfName.Catalog)
|
||||
self.assertEqual(sorted(x.Root.Pages.keys()),
|
||||
[PdfName.Count, PdfName.Kids, PdfName.Type])
|
||||
self.assertEqual(x.Root.Pages.Count, '1')
|
||||
self.assertEqual(x.Root.Pages.Type, PdfName.Pages)
|
||||
self.assertEqual(len(x.Root.Pages.Kids), 1)
|
||||
self.assertEqual(sorted(x.Root.Pages.Kids[0].keys()),
|
||||
orig_img = Image.open(f)
|
||||
for pagenum in range(len(x.Root.Pages.Kids)):
|
||||
# retrieve the original image frame that this page was
|
||||
# generated from
|
||||
orig_img.seek(pagenum)
|
||||
|
||||
ndpi = orig_img.info.get("dpi", (96.0, 96.0))
|
||||
# In python3, the returned dpi value for some tiff images will
|
||||
# not be an integer but a float. To make the behaviour of
|
||||
# img2pdf the same between python2 and python3, we convert that
|
||||
# float into an integer by rounding.
|
||||
# Search online for the 72.009 dpi problem for more info.
|
||||
ndpi = (int(round(ndpi[0])), int(round(ndpi[1])))
|
||||
imgwidthpx, imgheightpx = orig_img.size
|
||||
pagewidth = 72*imgwidthpx/ndpi[0]
|
||||
pageheight = 72*imgheightpx/ndpi[1]
|
||||
|
||||
def format_float(f):
|
||||
if int(f) == f:
|
||||
return str(int(f))
|
||||
else:
|
||||
return ("%.4f" % f).rstrip("0")
|
||||
|
||||
self.assertEqual(sorted(x.Root.Pages.Kids[pagenum].keys()),
|
||||
[PdfName.Contents, PdfName.MediaBox,
|
||||
PdfName.Parent, PdfName.Resources, PdfName.Type])
|
||||
self.assertEqual(x.Root.Pages.Kids[0].MediaBox,
|
||||
['0', '0', '115', '48'])
|
||||
self.assertEqual(x.Root.Pages.Kids[0].Parent, x.Root.Pages)
|
||||
self.assertEqual(x.Root.Pages.Kids[0].Type, PdfName.Page)
|
||||
self.assertEqual(x.Root.Pages.Kids[0].Resources.keys(),
|
||||
self.assertEqual(x.Root.Pages.Kids[pagenum].MediaBox,
|
||||
['0', '0', format_float(pagewidth), format_float(pageheight)])
|
||||
self.assertEqual(x.Root.Pages.Kids[pagenum].Parent, x.Root.Pages)
|
||||
self.assertEqual(x.Root.Pages.Kids[pagenum].Type, PdfName.Page)
|
||||
self.assertEqual(x.Root.Pages.Kids[pagenum].Resources.keys(),
|
||||
[PdfName.XObject])
|
||||
self.assertEqual(x.Root.Pages.Kids[0].Resources.XObject.keys(),
|
||||
self.assertEqual(x.Root.Pages.Kids[pagenum].Resources.XObject.keys(),
|
||||
[PdfName.Im0])
|
||||
self.assertEqual(x.Root.Pages.Kids[0].Contents.keys(),
|
||||
self.assertEqual(x.Root.Pages.Kids[pagenum].Contents.keys(),
|
||||
[PdfName.Length])
|
||||
self.assertEqual(x.Root.Pages.Kids[0].Contents.Length,
|
||||
str(len(x.Root.Pages.Kids[0].Contents.stream)))
|
||||
self.assertEqual(x.Root.Pages.Kids[0].Contents.stream,
|
||||
"q\n115.0000 0 0 48.0000 0.0000 0.0000 cm\n/Im0 "
|
||||
"Do\nQ")
|
||||
self.assertEqual(x.Root.Pages.Kids[pagenum].Contents.Length,
|
||||
str(len(x.Root.Pages.Kids[pagenum].Contents.stream)))
|
||||
self.assertEqual(x.Root.Pages.Kids[pagenum].Contents.stream,
|
||||
"q\n%.4f 0 0 %.4f 0.0000 0.0000 cm\n"
|
||||
"/Im0 Do\nQ" % (pagewidth, pageheight))
|
||||
|
||||
imgprops = x.Root.Pages.Kids[0].Resources.XObject.Im0
|
||||
imgprops = x.Root.Pages.Kids[pagenum].Resources.XObject.Im0
|
||||
|
||||
# test if the filter is valid:
|
||||
self.assertIn(
|
||||
|
@ -516,15 +543,15 @@ def test_suite():
|
|||
self.assertIn(
|
||||
imgprops.ColorSpace, [PdfName.DeviceGray, PdfName.DeviceRGB,
|
||||
PdfName.DeviceCMYK])
|
||||
|
||||
# test if the image has correct size
|
||||
orig_img = Image.open(f)
|
||||
self.assertEqual(imgprops.Width, str(orig_img.size[0]))
|
||||
self.assertEqual(imgprops.Height, str(orig_img.size[1]))
|
||||
# if the input file is a jpeg then it should've been copied
|
||||
# verbatim into the PDF
|
||||
if imgprops.Filter in [[PdfName.DCTDecode], [PdfName.JPXDecode]]:
|
||||
self.assertEqual(
|
||||
x.Root.Pages.Kids[0].Resources.XObject.Im0.stream,
|
||||
x.Root.Pages.Kids[pagenum].Resources.XObject.Im0.stream,
|
||||
convert_load(orig_imgdata))
|
||||
elif imgprops.Filter == [PdfName.CCITTFaxDecode]:
|
||||
tiff_header = tiff_header_for_ccitt(
|
||||
|
@ -533,7 +560,7 @@ def test_suite():
|
|||
imgio = BytesIO()
|
||||
imgio.write(tiff_header)
|
||||
imgio.write(convert_store(
|
||||
x.Root.Pages.Kids[0].Resources.XObject.Im0.stream))
|
||||
x.Root.Pages.Kids[pagenum].Resources.XObject.Im0.stream))
|
||||
imgio.seek(0)
|
||||
im = Image.open(imgio)
|
||||
self.assertEqual(im.tobytes(), orig_img.tobytes())
|
||||
|
@ -547,7 +574,7 @@ def test_suite():
|
|||
# the pixel data of the input image
|
||||
imgdata = zlib.decompress(
|
||||
convert_store(
|
||||
x.Root.Pages.Kids[0].Resources.XObject.Im0.stream))
|
||||
x.Root.Pages.Kids[pagenum].Resources.XObject.Im0.stream))
|
||||
colorspace = imgprops.ColorSpace
|
||||
if colorspace == PdfName.DeviceGray:
|
||||
colorspace = 'L'
|
||||
|
@ -561,10 +588,9 @@ def test_suite():
|
|||
int(imgprops.Height)),
|
||||
imgdata)
|
||||
if orig_img.mode == '1':
|
||||
orig_img = orig_img.convert("L")
|
||||
self.assertEqual(im.tobytes(), orig_img.convert("L").tobytes())
|
||||
elif orig_img.mode not in ("RGB", "L", "CMYK", "CMYK;I"):
|
||||
orig_img = orig_img.convert("RGB")
|
||||
self.assertEqual(im.tobytes(), orig_img.tobytes())
|
||||
self.assertEqual(im.tobytes(), orig_img.convert("RGB").tobytes())
|
||||
# the python-pil version 2.3.0-1ubuntu3 in Ubuntu does not have
|
||||
# the close() method
|
||||
try:
|
||||
|
|
Loading…
Reference in a new issue