def test_delete(self):
vertex1 = Vertex(1)
vertex2 = Vertex(2)
edge = Edge(vertex1, vertex2, 3)
edge.delete()
self.assertNotIn(edge, vertex1.edges)
self.assertNotIn(edge, vertex2.edges)
def deleteEdge(self, edge: Edge):
self.edges.remove(edge)
edge.delete()