def test_children_concrete_classes(self):
"""
Test ConcreteCdp _get_children_concrete_classes returns something list-like
"""
node_id = '103'
node = Node(node_id)
concreteCdp = ConcreteCdp(node)
self.assertTrue(
isinstance(
concreteCdp._get_children_concrete_classes(),
list))
for child in concreteCdp._get_children_concrete_classes():
self.assertFalse(isinstance(child, ConcreteCdpIf))
