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Add unit test for vips_matrixinvert

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Kleis Auke Wolthuizen 2020-06-18 14:41:03 +02:00
parent f6b9f382ec
commit 4b5db786f0
1 changed files with 17 additions and 0 deletions
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test/test-suite/test_create.py
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@ -203,6 +203,23 @@ class TestCreate:
p = im(0.1 * 255, 0) p = im(0.1 * 255, 0)
assert p[2] == pytest.approx(0.1, abs=0.1) assert p[2] == pytest.approx(0.1, abs=0.1)
def test_matrixinvert(self):
# 4x4 matrix to check if PLU decomposition works
mat = pyvips.Image.new_from_array([[4, 0, 0, 0],
[0, 0, 2, 0],
[0, 1, 2, 0],
[1, 0, 0, 1]])
im = mat.matrixinvert()
assert im.width == 4
assert im.height == 4
assert im.bands == 1
assert im.format == pyvips.BandFormat.DOUBLE
p = im(0, 0)
assert p[0] == 0.25
p = im(3, 3)
assert p[0] == 1.0
def test_logmat(self): def test_logmat(self):
im = pyvips.Image.logmat(1, 0.1) im = pyvips.Image.logmat(1, 0.1)
assert im.width == 7 assert im.width == 7