def test_cast():
sso = SSO.cast(NodePath("sso"))
gso = GSO.cast(NodePath("gso"))
pso = PSO.cast(NodePath("pso"))
ghso = GHSO.cast(NodePath("ghso"))
rbso = RBSO.cast(NodePath("rbso"))
assert isinstance(sso, NodePath)
assert isinstance(sso, SSO)
assert isinstance(gso, NodePath)
assert isinstance(gso, SSO)
assert isinstance(gso, GSO)
assert isinstance(ghso, NodePath)
assert isinstance(ghso, SSO)
assert isinstance(ghso, PSO)
assert isinstance(ghso, GHSO)
assert isinstance(rbso, NodePath)
assert isinstance(rbso, SSO)
assert isinstance(rbso, PSO)
assert isinstance(rbso, RBSO)
def test_shape_immutability():
sso = PSO(BulletRigidBodyNode("foo"))
before = sso.read_prop()
before["shape"] = "Sphere"
assert sso.read_prop()["shape"] != before["shape"]
