def test_start_not_in_graph(self):
g = collections.defaultdict(list)
g[1] = set((2,))
g[2] = set((3,))
self.assertIs(find_connected_nodes(g, 9), None)
def test_start_not_in_graph(self):
g = collections.defaultdict(set)
g[1] = {2}
g[2] = {3}
self.assertIs(find_connected_nodes(g, 9), None)
def test_start_not_in_graph(self):
g = collections.defaultdict(list)
g[1] = set((2,))
g[2] = set((3,))
self.assertIs(find_connected_nodes(g, 9), None)