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resize transform tests

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homm 2016-07-10 16:07:31 +03:00
parent 2522101ed7
commit ac747d2290
1 changed files with 32 additions and 0 deletions
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32
Tests/test_image_transform.py
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@ -191,6 +191,38 @@ class TestImageTransformAffine(PillowTestCase):
transform_data, resample) transform_data, resample)
self.assert_image_equal(transposed, transformed) self.assert_image_equal(transposed, transformed)
def _test_resize_x(self, x):
im = self._test_image()
transform_data = [
1/x, 0, 0,
0, 1/x, 0,
]
size = (int(round(im.width * x)), int(round(im.height * x)))
transformed = im.transform(
size, Image.AFFINE, transform_data, Image.NEAREST)
transform_data = [
x, 0, 0,
0, x, 0,
]
transformed = transformed.transform(
im.size, Image.AFFINE, transform_data, Image.NEAREST)
self.assert_image_equal(im, transformed)
def test_resize_1_1x(self):
self._test_resize_x(1.1)
def test_resize_1_5x(self):
self._test_resize_x(1.5)
def test_resize_2_0x(self):
self._test_resize_x(2.0)
def test_resize_2_3x(self):
self._test_resize_x(2.3)
def test_resize_2_5x(self):
self._test_resize_x(2.5)
if __name__ == '__main__': if __name__ == '__main__':
unittest.main() unittest.main()