def test_gradient_empty(self):
self.assertEqual((0.1, 0.2, 0.3),
objgraph._gradient((0.1, 0.2, 0.3), (0.2, 0.3, 0.4),
0, 0))
def test_gradient_empty(self):
self.assertEqual((0.1, 0.2, 0.3),
objgraph._gradient((0.1, 0.2, 0.3),
(0.2, 0.3, 0.4), 0, 0))