def test_attenuation():
"""Test setting attenuation."""
np.random.seed(0)
data = np.random.random((10, 15))
layer = Image(data)
assert layer.attenuation == 0.5
# Change iso_threshold property
attenuation = 0.7
layer.attenuation = attenuation
assert layer.attenuation == attenuation
# Set attenuation as keyword argument
layer = Image(data, attenuation=attenuation)
assert layer.attenuation == attenuation
