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tests for basic operations on 0x0 images

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This commit is contained in:
wiredfool 2016-12-27 04:53:23 -08:00
parent 69bea50810
commit 0a922b962f
5 changed files with 52 additions and 0 deletions
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13
Tests/test_image_access.py
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@ -78,12 +78,25 @@ class TestImageGetPixel(AccessTest):
im.getpixel((0, 0)), c, im.getpixel((0, 0)), c,
"put/getpixel roundtrip failed for mode %s, color %s" % (mode, c)) "put/getpixel roundtrip failed for mode %s, color %s" % (mode, c))
# Check 0
im = Image.new(mode, (0, 0), None)
with self.assertRaises(IndexError):
im.putpixel((0, 0), c)
with self.assertRaises(IndexError):
im.getpixel((0, 0))
# check initial color # check initial color
im = Image.new(mode, (1, 1), c) im = Image.new(mode, (1, 1), c)
self.assertEqual( self.assertEqual(
im.getpixel((0, 0)), c, im.getpixel((0, 0)), c,
"initial color failed for mode %s, color %s " % (mode, c)) "initial color failed for mode %s, color %s " % (mode, c))
# Check 0
im = Image.new(mode, (0, 0), c)
with self.assertRaises(IndexError):
im.getpixel((0, 0))
def test_basic(self): def test_basic(self):
for mode in ("1", "L", "LA", "I", "I;16", "I;16B", "F", for mode in ("1", "L", "LA", "I", "I;16", "I;16B", "F",
"P", "PA", "RGB", "RGBA", "RGBX", "CMYK", "YCbCr"): "P", "PA", "RGB", "RGBA", "RGBX", "CMYK", "YCbCr"):

5
Tests/test_image_convert.py
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@ -19,6 +19,11 @@ class TestImageConvert(PillowTestCase):
for mode in modes: for mode in modes:
convert(im, mode) convert(im, mode)
# Check 0
im = Image.new(mode, (0,0))
for mode in modes:
convert(im, mode)
def test_default(self): def test_default(self):
im = hopper("P") im = hopper("P")

9
Tests/test_image_copy.py
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@ -1,5 +1,7 @@
from helper import unittest, PillowTestCase, hopper from helper import unittest, PillowTestCase, hopper
from PIL import Image
import copy import copy
@ -33,5 +35,12 @@ class TestImageCopy(PillowTestCase):
self.assertEqual(out.mode, im.mode) self.assertEqual(out.mode, im.mode)
self.assertEqual(out.size, croppedSize) self.assertEqual(out.size, croppedSize)
def test_copy_zero(self):
im = Image.new('RGB', (0,0))
out = im.copy()
self.assertEqual(out.mode, im.mode)
self.assertEqual(out.size, im.size)
if __name__ == '__main__': if __name__ == '__main__':
unittest.main() unittest.main()

17
Tests/test_image_crop.py
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@ -83,6 +83,23 @@ class TestImageCrop(PillowTestCase):
img = img.crop(extents) img = img.crop(extents)
img.load() img.load()
def test_crop_zero(self):
im = Image.new('RGB', (0, 0), 'white')
cropped = im.crop((0, 0, 0, 0))
self.assertEqual(cropped.size, (0, 0))
cropped = im.crop((10, 10, 20, 20))
self.assertEqual(cropped.size, (10, 10))
self.assertEqual(cropped.getdata()[0], (0, 0, 0))
im = Image.new('RGB', (0, 0))
cropped = im.crop((10, 10, 20, 20))
self.assertEqual(cropped.size, (10, 10))
self.assertEqual(cropped.getdata()[2], (0, 0, 0))
if __name__ == '__main__': if __name__ == '__main__':

8
Tests/test_image_resize.py
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@ -89,6 +89,14 @@ class TestImagingCoreResize(PillowTestCase):
# as separately resized channel # as separately resized channel
self.assert_image_equal(ch, references[channels[i]]) self.assert_image_equal(ch, references[channels[i]])
def test_enlarge_zero(self):
for f in [Image.NEAREST, Image.BOX, Image.BILINEAR, Image.HAMMING,
Image.BICUBIC, Image.LANCZOS]:
r = self.resize(Image.new('RGB', (0,0), "white"), (212, 195), f)
self.assertEqual(r.mode, "RGB")
self.assertEqual(r.size, (212, 195))
self.assertEqual(r.getdata()[0], (0,0,0))
class TestImageResize(PillowTestCase): class TestImageResize(PillowTestCase):