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Tests for multipage tiffs

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This commit is contained in:
wiredfool 2014-08-20 21:43:46 -07:00
parent f54bccab0e
commit b8bdd13aac
4 changed files with 56 additions and 1 deletions
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Tests/images/multipage-lastframe.tif Normal file
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Tests/images/test.tif → Tests/images/multipage.tiff
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29
Tests/test_file_libtiff.py
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@ -312,6 +312,35 @@ class TestFileLibTiff(LibTiffTestCase):
self.assertRaises(OSError, lambda: os.fstat(fn))
self.assertRaises(OSError, lambda: os.close(fn))
def test_multipage(self):
# issue #862
TiffImagePlugin.READ_LIBTIFF = True
im = Image.open('Tests/images/multipage.tiff')
# file is a multipage tiff, 10x10 green, 10x10 red, 20x20 blue
im.seek(0)
self.assertEqual(im.size, (10,10))
self.assertEqual(im.convert('RGB').getpixel((0,0)), (0,128,0))
self.assertTrue(im.tag.next)
im.seek(1)
self.assertEqual(im.size, (10,10))
self.assertEqual(im.convert('RGB').getpixel((0,0)), (255,0,0))
self.assertTrue(im.tag.next)
im.seek(2)
self.assertFalse(im.tag.next)
self.assertEqual(im.size, (20,20))
self.assertEqual(im.convert('RGB').getpixel((0,0)), (0,0,255))
TiffImagePlugin.READ_LIBTIFF = False
def test__next(self):
TiffImagePlugin.READ_LIBTIFF = True
im = Image.open('Tests/images/lena.tif')
self.assertFalse(im.tag.next)
im.load()
self.assertFalse(im.tag.next)
if __name__ == '__main__':
unittest.main()

28
Tests/test_file_tiff.py
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@ -1,6 +1,6 @@
from helper import unittest, PillowTestCase, lena, py3
from PIL import Image
from PIL import Image, TiffImagePlugin
class TestFileTiff(PillowTestCase):
@ -141,6 +141,32 @@ class TestFileTiff(PillowTestCase):
self.assertEqual(
im.getextrema(), (-3.140936851501465, 3.140684127807617))
def test_multipage(self):
# issue #862
im = Image.open('Tests/images/multipage.tiff')
# file is a multipage tiff, 10x10 green, 10x10 red, 20x20 blue
im.seek(0)
self.assertEqual(im.size, (10,10))
self.assertEqual(im.convert('RGB').getpixel((0,0)), (0,128,0))
im.seek(1)
im.load()
self.assertEqual(im.size, (10,10))
self.assertEqual(im.convert('RGB').getpixel((0,0)), (255,0,0))
im.seek(2)
im.load()
self.assertEqual(im.size, (20,20))
self.assertEqual(im.convert('RGB').getpixel((0,0)), (0,0,255))
def test_multipage_last_frame(self):
im = Image.open('Tests/images/multipage-lastframe.tif')
im.load()
self.assertEqual(im.size, (20,20))
self.assertEqual(im.convert('RGB').getpixel((0,0)), (0,0,255))
def test___str__(self):
# Arrange
file = "Tests/images/pil136.tiff"