def test_avg_methods_return_0_for_too_small_trees():
tree = RTree([Vec3()])
assert tree.avg_leaf_size() == 0.0
assert tree.avg_spherical_envelope_radius() == 0.0
assert tree.avg_nn_distance() == 0.0
def test_avg_nn_distance_of_random_points():
tree = RTree([Vec3.random(100) for _ in range(100)])
nn_dist = tree.avg_nn_distance()
assert nn_dist > 10.0
