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Added output checked tests for rotate with center and translate

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wiredfool 2017-01-01 11:09:06 +00:00
parent 7228de1491
commit 45138fec9b
1 changed files with 46 additions and 0 deletions
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46
Tests/test_image_rotate.py
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@ -33,6 +33,7 @@ class TestImageRotate(PillowTestCase):
self.rotate(im, im.mode, angle)
def test_resample(self):
# Target image creation, inspected by eye.
# >>> im = Image.open('Tests/images/hopper.ppm')
# >>> im = im.rotate(45, resample=Image.BICUBIC, expand=True)
# >>> im.save('Tests/images/hopper_45.png')
@ -45,6 +46,51 @@ class TestImageRotate(PillowTestCase):
im = im.rotate(45, resample=resample, expand=True)
self.assert_image_similar(im, target, epsilon)
def test_center_0(self):
im = hopper()
target = Image.open('Tests/images/hopper_45.png')
target_origin = target.size[1]/2
target = target.crop((0, target_origin, 128, target_origin + 128))
im = im.rotate(45, center=(0,0), resample=Image.BICUBIC)
self.assert_image_similar(im, target, 15)
def test_center_14(self):
im = hopper()
target = Image.open('Tests/images/hopper_45.png')
target_origin = target.size[1] / 2 - 14
target = target.crop((6, target_origin, 128 + 6, target_origin + 128))
im = im.rotate(45, center=(14,14), resample=Image.BICUBIC)
self.assert_image_similar(im, target, 10)
def test_translate(self):
im = hopper()
target = Image.open('Tests/images/hopper_45.png')
target_origin = (target.size[1] / 2 - 64) - 5
target = target.crop((target_origin, target_origin,
target_origin + 128, target_origin + 128))
im = im.rotate(45, translate=(5,5), resample=Image.BICUBIC)
self.assert_image_similar(im, target, 1)
def test_fastpath_center(self):
# if the center is -1,-1 and we rotate by 90<=x<=270 the
# resulting image should be black
for angle in (90, 180, 270):
im = hopper().rotate(angle, center=(-1,-1))
self.assert_image_equal(im, Image.new('RGB', im.size, 'black'))
def test_fastpath_translate(self):
# if we post-translate by -128
# resulting image should be black
for angle in (0, 90, 180, 270):
im = hopper().rotate(angle, translate=(-128,-128))
self.assert_image_equal(im, Image.new('RGB', im.size, 'black'))
def test_center(self):
im = hopper()
self.rotate(im, im.mode, 45, center=(0, 0))