def test_node_list(os):
("Node#list should return a list containing one node "
"per file found inside of the current node")
os.listdir.return_value = ['/foo/bar/items/whatever.py']
nd = Node('/foo/bar/items/')
nd.list().should.have.length_of(1)
os.listdir.assert_once_called_with('/foo/bar/items')
