def test_subtop_assign_parent(self):
subtop = SubTopology()
top = Topology()
subtop.parent = top
assert subtop.parent is not None
def test_subtop_setters(self):
subtop = SubTopology()
assert subtop.name == 'Sub-Topology'
assert subtop.parent is None
assert subtop.n_sites == 0
subtop.name = 'NewSubTopology'
assert subtop.name == 'NewSubTopology'
newparent = Topology()
subtop.parent = newparent
assert subtop.parent == newparent