def test_depth(self):
tree = BinaryDecisionTree(n_features=1)
split = BinaryDecisionTreeSplit(feature_id=0, value=0.0)
for split_count in range(15):
tree.split_node(tree.leaves()[0], split)
print(tree)
self.assertEqual(1, tree.depth(0))
self.assertEqual(2, tree.depth(1))
self.assertEqual(2, tree.depth(2))
self.assertEqual(3, tree.depth(3))
self.assertEqual(3, tree.depth(4))
self.assertEqual(3, tree.depth(5))
self.assertEqual(3, tree.depth(6))
self.assertEqual(4, tree.depth(7))
self.assertEqual(4, tree.depth(8))
self.assertEqual(4, tree.depth(9))
self.assertEqual(4, tree.depth(10))
self.assertEqual(4, tree.depth(11))
self.assertEqual(4, tree.depth(12))
self.assertEqual(4, tree.depth(13))
self.assertEqual(4, tree.depth(14))
