Pillow/Tests/test_file_icns.py
2017-09-01 20:36:51 +10:00

106 lines
3.3 KiB
Python

from helper import unittest, PillowTestCase
from PIL import Image, IcnsImagePlugin
import io
import sys
# sample icon file
TEST_FILE = "Tests/images/pillow.icns"
enable_jpeg2k = hasattr(Image.core, 'jp2klib_version')
class TestFileIcns(PillowTestCase):
def test_sanity(self):
# Loading this icon by default should result in the largest size
# (512x512@2x) being loaded
im = Image.open(TEST_FILE)
im.load()
self.assertEqual(im.mode, "RGBA")
self.assertEqual(im.size, (1024, 1024))
self.assertEqual(im.format, "ICNS")
@unittest.skipIf(sys.platform != 'darwin',
"requires MacOS")
def test_save(self):
im = Image.open(TEST_FILE)
temp_file = self.tempfile("temp.icns")
im.save(temp_file)
reread = Image.open(temp_file)
self.assertEqual(reread.mode, "RGBA")
self.assertEqual(reread.size, (1024, 1024))
self.assertEqual(reread.format, "ICNS")
def test_sizes(self):
# Check that we can load all of the sizes, and that the final pixel
# dimensions are as expected
im = Image.open(TEST_FILE)
for w, h, r in im.info['sizes']:
wr = w * r
hr = h * r
im2 = Image.open(TEST_FILE)
im2.size = (w, h, r)
im2.load()
self.assertEqual(im2.mode, 'RGBA')
self.assertEqual(im2.size, (wr, hr))
def test_older_icon(self):
# This icon was made with Icon Composer rather than iconutil; it still
# uses PNG rather than JP2, however (since it was made on 10.9).
im = Image.open('Tests/images/pillow2.icns')
for w, h, r in im.info['sizes']:
wr = w * r
hr = h * r
im2 = Image.open('Tests/images/pillow2.icns')
im2.size = (w, h, r)
im2.load()
self.assertEqual(im2.mode, 'RGBA')
self.assertEqual(im2.size, (wr, hr))
def test_jp2_icon(self):
# This icon was made by using Uli Kusterer's oldiconutil to replace
# the PNG images with JPEG 2000 ones. The advantage of doing this is
# that OS X 10.5 supports JPEG 2000 but not PNG; some commercial
# software therefore does just this.
# (oldiconutil is here: https://github.com/uliwitness/oldiconutil)
if not enable_jpeg2k:
return
im = Image.open('Tests/images/pillow3.icns')
for w, h, r in im.info['sizes']:
wr = w * r
hr = h * r
im2 = Image.open('Tests/images/pillow3.icns')
im2.size = (w, h, r)
im2.load()
self.assertEqual(im2.mode, 'RGBA')
self.assertEqual(im2.size, (wr, hr))
def test_getimage(self):
with open(TEST_FILE, 'rb') as fp:
icns_file = IcnsImagePlugin.IcnsFile(fp)
im = icns_file.getimage()
self.assertEqual(im.mode, "RGBA")
self.assertEqual(im.size, (1024, 1024))
im = icns_file.getimage((512, 512))
self.assertEqual(im.mode, "RGBA")
self.assertEqual(im.size, (512, 512))
def test_not_an_icns_file(self):
with io.BytesIO(b'invalid\n') as fp:
self.assertRaises(SyntaxError,
lambda: IcnsImagePlugin.IcnsFile(fp))
if __name__ == '__main__':
unittest.main()