def test_blending():
"""Test setting layer blending."""
np.random.seed(0)
data = np.random.randint(20, size=(10, 15))
layer = Labels(data)
assert layer.blending == 'translucent'
layer.blending = 'additive'
assert layer.blending == 'additive'
layer = Labels(data, blending='additive')
assert layer.blending == 'additive'
layer.blending = 'opaque'
assert layer.blending == 'opaque'
