Pillow/Tests/test_file_eps.py
2017-12-24 21:12:48 +11:00

294 lines
10 KiB
Python

from helper import unittest, PillowTestCase, hopper
from PIL import Image, EpsImagePlugin
import io
# Our two EPS test files (they are identical except for their bounding boxes)
file1 = "Tests/images/zero_bb.eps"
file2 = "Tests/images/non_zero_bb.eps"
# Due to palletization, we'll need to convert these to RGB after load
file1_compare = "Tests/images/zero_bb.png"
file1_compare_scale2 = "Tests/images/zero_bb_scale2.png"
file2_compare = "Tests/images/non_zero_bb.png"
file2_compare_scale2 = "Tests/images/non_zero_bb_scale2.png"
# EPS test files with binary preview
file3 = "Tests/images/binary_preview_map.eps"
class TestFileEps(PillowTestCase):
def setUp(self):
if not EpsImagePlugin.has_ghostscript():
self.skipTest("Ghostscript not available")
def test_sanity(self):
# Regular scale
image1 = Image.open(file1)
image1.load()
self.assertEqual(image1.mode, "RGB")
self.assertEqual(image1.size, (460, 352))
self.assertEqual(image1.format, "EPS")
image2 = Image.open(file2)
image2.load()
self.assertEqual(image2.mode, "RGB")
self.assertEqual(image2.size, (360, 252))
self.assertEqual(image2.format, "EPS")
# Double scale
image1_scale2 = Image.open(file1)
image1_scale2.load(scale=2)
self.assertEqual(image1_scale2.mode, "RGB")
self.assertEqual(image1_scale2.size, (920, 704))
self.assertEqual(image1_scale2.format, "EPS")
image2_scale2 = Image.open(file2)
image2_scale2.load(scale=2)
self.assertEqual(image2_scale2.mode, "RGB")
self.assertEqual(image2_scale2.size, (720, 504))
self.assertEqual(image2_scale2.format, "EPS")
def test_invalid_file(self):
invalid_file = "Tests/images/flower.jpg"
self.assertRaises(SyntaxError,
EpsImagePlugin.EpsImageFile, invalid_file)
def test_cmyk(self):
cmyk_image = Image.open("Tests/images/pil_sample_cmyk.eps")
self.assertEqual(cmyk_image.mode, "CMYK")
self.assertEqual(cmyk_image.size, (100, 100))
self.assertEqual(cmyk_image.format, "EPS")
cmyk_image.load()
self.assertEqual(cmyk_image.mode, "RGB")
if 'jpeg_decoder' in dir(Image.core):
target = Image.open('Tests/images/pil_sample_rgb.jpg')
self.assert_image_similar(cmyk_image, target, 10)
def test_showpage(self):
# See https://github.com/python-pillow/Pillow/issues/2615
plot_image = Image.open("Tests/images/reqd_showpage.eps")
target = Image.open("Tests/images/reqd_showpage.png")
#should not crash/hang
plot_image.load()
# fonts could be slightly different
self.assert_image_similar(plot_image, target, 6)
def test_file_object(self):
# issue 479
image1 = Image.open(file1)
with open(self.tempfile('temp_file.eps'), 'wb') as fh:
image1.save(fh, 'EPS')
def test_iobase_object(self):
# issue 479
image1 = Image.open(file1)
with io.open(self.tempfile('temp_iobase.eps'), 'wb') as fh:
image1.save(fh, 'EPS')
def test_bytesio_object(self):
with open(file1, 'rb') as f:
img_bytes = io.BytesIO(f.read())
img = Image.open(img_bytes)
img.load()
image1_scale1_compare = Image.open(file1_compare).convert("RGB")
image1_scale1_compare.load()
self.assert_image_similar(img, image1_scale1_compare, 5)
def test_image_mode_not_supported(self):
im = hopper("RGBA")
tmpfile = self.tempfile('temp.eps')
self.assertRaises(ValueError, im.save, tmpfile)
def test_render_scale1(self):
# We need png support for these render test
codecs = dir(Image.core)
if "zip_encoder" not in codecs or "zip_decoder" not in codecs:
self.skipTest("zip/deflate support not available")
# Zero bounding box
image1_scale1 = Image.open(file1)
image1_scale1.load()
image1_scale1_compare = Image.open(file1_compare).convert("RGB")
image1_scale1_compare.load()
self.assert_image_similar(image1_scale1, image1_scale1_compare, 5)
# Non-Zero bounding box
image2_scale1 = Image.open(file2)
image2_scale1.load()
image2_scale1_compare = Image.open(file2_compare).convert("RGB")
image2_scale1_compare.load()
self.assert_image_similar(image2_scale1, image2_scale1_compare, 10)
def test_render_scale2(self):
# We need png support for these render test
codecs = dir(Image.core)
if "zip_encoder" not in codecs or "zip_decoder" not in codecs:
self.skipTest("zip/deflate support not available")
# Zero bounding box
image1_scale2 = Image.open(file1)
image1_scale2.load(scale=2)
image1_scale2_compare = Image.open(file1_compare_scale2).convert("RGB")
image1_scale2_compare.load()
self.assert_image_similar(image1_scale2, image1_scale2_compare, 5)
# Non-Zero bounding box
image2_scale2 = Image.open(file2)
image2_scale2.load(scale=2)
image2_scale2_compare = Image.open(file2_compare_scale2).convert("RGB")
image2_scale2_compare.load()
self.assert_image_similar(image2_scale2, image2_scale2_compare, 10)
def test_resize(self):
# Arrange
image1 = Image.open(file1)
image2 = Image.open(file2)
image3 = Image.open("Tests/images/illu10_preview.eps")
new_size = (100, 100)
# Act
image1 = image1.resize(new_size)
image2 = image2.resize(new_size)
image3 = image3.resize(new_size)
# Assert
self.assertEqual(image1.size, new_size)
self.assertEqual(image2.size, new_size)
self.assertEqual(image3.size, new_size)
def test_thumbnail(self):
# Issue #619
# Arrange
image1 = Image.open(file1)
image2 = Image.open(file2)
new_size = (100, 100)
# Act
image1.thumbnail(new_size)
image2.thumbnail(new_size)
# Assert
self.assertEqual(max(image1.size), max(new_size))
self.assertEqual(max(image2.size), max(new_size))
def test_read_binary_preview(self):
# Issue 302
# open image with binary preview
Image.open(file3)
def _test_readline(self, t, ending):
ending = "Failure with line ending: %s" % ("".join(
"%s" % ord(s)
for s in ending))
self.assertEqual(t.readline().strip('\r\n'), 'something', ending)
self.assertEqual(t.readline().strip('\r\n'), 'else', ending)
self.assertEqual(t.readline().strip('\r\n'), 'baz', ending)
self.assertEqual(t.readline().strip('\r\n'), 'bif', ending)
def _test_readline_stringio(self, test_string, ending):
# check all the freaking line endings possible
try:
import StringIO
except ImportError:
# don't skip, it skips everything in the parent test
return
t = StringIO.StringIO(test_string)
self._test_readline(t, ending)
def _test_readline_io(self, test_string, ending):
if str is bytes:
t = io.StringIO(unicode(test_string))
else:
t = io.StringIO(test_string)
self._test_readline(t, ending)
def _test_readline_file_universal(self, test_string, ending):
f = self.tempfile('temp.txt')
with open(f, 'wb') as w:
if str is bytes:
w.write(test_string)
else:
w.write(test_string.encode('UTF-8'))
with open(f, 'rU') as t:
self._test_readline(t, ending)
def _test_readline_file_psfile(self, test_string, ending):
f = self.tempfile('temp.txt')
with open(f, 'wb') as w:
if str is bytes:
w.write(test_string)
else:
w.write(test_string.encode('UTF-8'))
with open(f, 'rb') as r:
t = EpsImagePlugin.PSFile(r)
self._test_readline(t, ending)
def test_readline(self):
# check all the freaking line endings possible from the spec
# test_string = u'something\r\nelse\n\rbaz\rbif\n'
line_endings = ['\r\n', '\n']
not_working_endings = ['\n\r', '\r']
strings = ['something', 'else', 'baz', 'bif']
for ending in line_endings:
s = ending.join(strings)
# Native Python versions will pass these endings.
# self._test_readline_stringio(s, ending)
# self._test_readline_io(s, ending)
# self._test_readline_file_universal(s, ending)
self._test_readline_file_psfile(s, ending)
for ending in not_working_endings:
# these only work with the PSFile, while they're in spec,
# they're not likely to be used
s = ending.join(strings)
# Native Python versions may fail on these endings.
# self._test_readline_stringio(s, ending)
# self._test_readline_io(s, ending)
# self._test_readline_file_universal(s, ending)
self._test_readline_file_psfile(s, ending)
def test_open_eps(self):
# https://github.com/python-pillow/Pillow/issues/1104
# Arrange
FILES = ["Tests/images/illu10_no_preview.eps",
"Tests/images/illu10_preview.eps",
"Tests/images/illuCS6_no_preview.eps",
"Tests/images/illuCS6_preview.eps"]
# Act
for filename in FILES:
img = Image.open(filename)
# Assert
self.assertEqual(img.mode, "RGB")
def test_emptyline(self):
# Test file includes an empty line in the header data
emptyline_file = "Tests/images/zero_bb_emptyline.eps"
image = Image.open(emptyline_file)
image.load()
self.assertEqual(image.mode, "RGB")
self.assertEqual(image.size, (460, 352))
self.assertEqual(image.format, "EPS")
if __name__ == '__main__':
unittest.main()