def is_connected(self):
"""
Test if the graph is connected.
Return True if connected, False otherwise
"""
try:
return rx.is_weakly_connected(self.graph)
except rx.NullGraph:
return False
def test_is_weakly_connected_true(self):
graph = retworkx.PyDiGraph()
graph.extend_from_edge_list([
(0, 1),
(1, 2),
(2, 3),
(3, 0),
(2, 4),
(4, 5),
(5, 6),
(6, 7),
(7, 4),
])
self.assertTrue(retworkx.is_weakly_connected(graph))
def test_is_weakly_connected_null_graph(self):
graph = retworkx.PyDiGraph()
with self.assertRaises(retworkx.NullGraph):
retworkx.is_weakly_connected(graph)