def test_rand(self):
""" Test rand. """
img = CImg((100, 100))
img.rand(-2, 2)
val_min, val_max = img.min_max()
self.assertGreaterEqual(val_min, -2)
self.assertLessEqual(val_max, +2)
def test_normalize(self):
""" Test normalize. """
img = CImg((10, 10))
img.rand(-10, 10)
img.normalize(-5, 5)
min_val, max_val = img.min_max()
self.assertEqual(min_val, -5)
self.assertEqual(max_val, 5)
def test_min_max(self):
""" Test min_max. """
img = CImg(np.array([[2, -1], [0, 4]]))
self.assertEqual(img.min_max(), (-1, 4))