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Tests for skipping passes (are passed if disable the passes skipping)

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This commit is contained in:
Alexander 2017-08-31 22:28:43 +03:00
parent 1e1f773f8a
commit edcbd3f67d
2 changed files with 83 additions and 2 deletions
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81
Tests/test_image_resample.py
View File

@ -344,6 +344,7 @@ class CoreResamplePassesTest(PillowTestCase):
cropped = im.crop(box).resize(im.size, Image.BILINEAR)
self.assert_image_similar(with_box, cropped, 0.1)
class CoreResampleCoefficientsTest(PillowTestCase):
def test_reduce(self):
test_color = 254
@ -458,6 +459,86 @@ class CoreResampleBoxTest(PillowTestCase):
cropped = im.crop(box).resize((32, 32), resample)
self.assert_image_similar(cropped, with_box, 0.4)
def test_passthrough(self):
"When no resize is required"
im = hopper()
for size, box in [
((40, 50), (0, 0, 40, 50)),
((40, 50), (0, 10, 40, 60)),
((40, 50), (10, 0, 50, 50)),
((40, 50), (10, 20, 50, 70)),
]:
try:
res = im.resize(size, Image.LANCZOS, box)
self.assertEqual(res.size, size)
self.assert_image_equal(res, im.crop(box))
except AssertionError:
print('>>>', size, box)
raise
def test_no_passthrough(self):
"When resize is required"
im = hopper()
for size, box in [
((40, 50), (0.4, 0.4, 40.4, 50.4)),
((40, 50), (0.4, 10.4, 40.4, 60.4)),
((40, 50), (10.4, 0.4, 50.4, 50.4)),
((40, 50), (10.4, 20.4, 50.4, 70.4)),
]:
try:
res = im.resize(size, Image.LANCZOS, box)
self.assertEqual(res.size, size)
with self.assertRaisesRegexp(AssertionError, "difference \d"):
# check that the difference at least that much
self.assert_image_similar(res, im.crop(box), 20)
except AssertionError:
print('>>>', size, box)
raise
def test_skip_horizontal(self):
"Can skip resize in one dimension"
im = hopper()
for flt in [Image.NEAREST, Image.BICUBIC]:
for size, box in [
((40, 50), (0, 0, 40, 90)),
((40, 50), (0, 20, 40, 90)),
((40, 50), (10, 0, 50, 90)),
((40, 50), (10, 20, 50, 90)),
]:
try:
res = im.resize(size, flt, box)
self.assertEqual(res.size, size)
# Borders should be slightly different
self.assert_image_similar(
res, im.crop(box).resize(size, flt), 0.4)
except AssertionError:
print('>>>', size, box, flt)
raise
def test_skip_vertical(self):
"Can skip resize in one dimension"
im = hopper()
for flt in [Image.NEAREST, Image.BICUBIC]:
for size, box in [
((40, 50), (0, 0, 90, 50)),
((40, 50), (20, 0, 90, 50)),
((40, 50), (0, 10, 90, 60)),
((40, 50), (20, 10, 90, 60)),
]:
try:
res = im.resize(size, flt, box)
self.assertEqual(res.size, size)
# Borders should be slightly different
self.assert_image_similar(
res, im.crop(box).resize(size, flt), 0.4)
except AssertionError:
print('>>>', size, box, flt)
raise
if __name__ == '__main__':
unittest.main()

4
_imaging.c
View File

@ -1530,8 +1530,8 @@ _resize(ImagingObject* self, PyObject* args)
}
// If box's coordinates are int and box size matches requested size
if (box[0] - (int) box[0] == 0 && box[1] - (int) box[1] == 0
&& box[2] - box[0] == xsize && box[3] - box[1] == ysize) {
if (box[0] - (int) box[0] == 0 && box[2] - box[0] == xsize
&& box[1] - (int) box[1] == 0 && box[3] - box[1] == ysize) {
imOut = ImagingCrop(imIn, box[0], box[1], box[2], box[3]);
}
else if (filter == IMAGING_TRANSFORM_NEAREST) {