python-pillow/Pillow
1
1
Fork 0
mirror of https://github.com/python-pillow/Pillow.git synced 2025-08-09 14:54:46 +03:00
Code Issues Packages Projects Releases Wiki Activity

libtiff's rational precision is limited to C floats.

Browse Source
This commit is contained in:
Antony Lee 2015-06-30 18:29:29 -07:00
parent 5b348bb695
commit 95d619add5
1 changed files with 16 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
Tests/test_file_libtiff.py
View File

@ -1,6 +1,7 @@
from __future__ import print_function
from helper import unittest, PillowTestCase, hopper, py3
from ctypes import c_float
import io
import itertools
import os
@ -138,10 +139,23 @@ class TestFileLibTiff(LibTiffTestCase):
loaded.tag.legacy_api = legacy_api
reloaded = loaded.tag.named()
for tag, value in itertools.chain(reloaded.items(), original.items()):
for tag, value in itertools.chain(reloaded.items(),
original.items()):
if tag not in ignored:
val = original[tag]
self.assertEqual(val, value, msg="%s didn't roundtrip" % tag)
if tag.endswith('Resolution'):
if legacy_api:
self.assertEqual(
c_float(val[0][0] / val[0][1]).value,
c_float(value[0][0] / value[0][1]).value,
msg="%s didn't roundtrip" % tag)
else:
self.assertEqual(
c_float(val).value, c_float(value).value,
msg="%s didn't roundtrip" % tag)
else:
self.assertEqual(
val, value, msg="%s didn't roundtrip" % tag)
def test_g3_compression(self):
i = Image.open('Tests/images/hopper_g4_500.tif')