def test_order(self):
assert 0 == Graph().order()
assert 1 == Graph([v, ]).order()
assert 4 == Graph([v, w, x, y]).order()
g = Graph(make_vertices(10))
assert 10 == g.order()
def test_order(self):
assert 0 == Graph().order()
assert 1 == Graph([v, ]).order()
assert 4 == Graph([v, w, x, y]).order()
g = Graph(make_vertices(10))
assert 10 == g.order()
