def test_children_concrete_classes(self):
"""
Test ConcreteBD _get_children_concrete_classes returns something list-like
"""
node_id = '101'
node = Node(node_id)
concreteBD = ConcreteBD(node)
self.assertTrue(
isinstance(
concreteBD._get_children_concrete_classes(),
list))
for child in concreteBD._get_children_concrete_classes():
self.assertFalse(isinstance(child, ConcreteSVI))
