def test_material_lockability():
"""Test the lockability of Plastic."""
pl = Plastic('test_plastic', 0.6, 0.7, 0.8, 0, 0)
pl.r_reflectance = 0.5
pl.lock()
with pytest.raises(AttributeError):
pl.r_reflectance = 0.7
pl.unlock()
pl.r_reflectance = 0.7
def test_update_values():
pl = Plastic('test_plastic', 0.6, 0.7, 0.8, 0.1, 0.02)
pl.r_reflectance = 0.5
pl.g_reflectance = 0.4
pl.b_reflectance = 0.3
pl.specularity = 0.1
pl.roughness = 0.02
assert pl.r_reflectance == 0.5
assert pl.g_reflectance == 0.4
assert pl.b_reflectance == 0.3
assert pl.specularity == 0.1
assert pl.roughness == 0.02
assert pl.to_radiance(minimal=True) == \
'void plastic test_plastic 0 0 5 0.5 0.4 0.3 0.1 0.02'