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Test APNG image for similarity

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This commit is contained in:
Andrew Murray 2018-12-27 12:19:44 +11:00
parent acc2c150f6
commit f9ce201cf0
1 changed files with 13 additions and 12 deletions
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25
Tests/test_file_png.py
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@ -6,6 +6,12 @@ from io import BytesIO
import zlib
import sys
try:
from PIL import _webp
HAVE_WEBP = True
except ImportError:
HAVE_WEBP = False
codecs = dir(Image.core)
@ -335,18 +341,6 @@ class TestFilePng(PillowTestCase):
im.load()
self.assertRaises(RuntimeError, im.verify)
def test_apng_load_verify(self):
# Check open/load/verify exception (@PIL150)
TEST_APNG_FILE = "Tests/images/iss634.apng"
im = Image.open(TEST_APNG_FILE)
# Assert that there is no unclosed file warning
self.assert_warning(None, im.verify)
im = Image.open(TEST_APNG_FILE)
im.load()
self.assertRaises(RuntimeError, im.verify)
def test_verify_struct_error(self):
# Check open/load/verify exception (#1755)
@ -569,6 +563,13 @@ class TestFilePng(PillowTestCase):
chunks = PngImagePlugin.getchunks(im)
self.assertEqual(len(chunks), 3)
@unittest.skipUnless(HAVE_WEBP and _webp.HAVE_WEBPANIM,
"WebP support not installed with animation")
def test_apng(self):
im = Image.open("Tests/images/iss634.apng")
expected = Image.open("Tests/images/iss634.webp")
self.assert_image_similar(im, expected, 0.23)
@unittest.skipIf(sys.platform.startswith('win32'), "requires Unix or macOS")
class TestTruncatedPngPLeaks(PillowLeakTestCase):