def test_reduce_density(log_density):
point = Tensor(randn(3))
d = Delta('foo', point, log_density)
# Note that log_density affects ground substitution but does not affect reduction.
assert d.reduce(ops.logaddexp, frozenset(['foo'])) is Number(0)
def test_reduce():
point = Tensor(randn(3))
d = Delta('foo', point)
assert d.reduce(ops.logaddexp, frozenset(['foo'])) is Number(0)