def test_update_sma():
points = Points(test_util.point_gen([1, 2, 3, 4, 5]))
f = points.sma(2)
assert f(4) == 4.5
assert f(5) is None
assert len(f.accumulated_points._points) == 3
points.append((5, 6))
assert f(5) == 5.5
assert len(f.accumulated_points._points) == 4
def test_append_to_empty():
points = Points([])
sma = points.sma(2)
points.append_list(test_util.point_gen([1, 2, 3, 4], t_start=10))
assert np.allclose(sma.sample_points(), [(11, 1.5), (12, 2.5), (13, 3.5)])
def test_replace():
points = Points(test_util.point_gen([1, 2, 3, 4]))
f = points.sma(2)
assert f(3) == 3.5
points.replace((3, 5))
assert f(3) == 4