def test_append_to_empty():
f = Quotes(1)
ps = f.close
f.append_list(
Quote.mock_ohlcv_points([(1, 2.2, 0.9, 2), (2, 3.1, 1.9, 3),
(3, 5.1, 2.9, 5)],
t_start=10,
t_step=1))
assert ps.sample_points() == [(10, 2), (11, 3), (12, 5)]
def test_close_points_during_update():
f = Quotes(1)
points = f.close
callback_count = 0
assert np.array_equal(points.sample_points(), [])
def callback(*args):
nonlocal callback_count
callback_count += 1
assert points.sample_points() == [(10, 2), (11, 3), (12, 5)]
points.add_observer(end=callback)
f.append_list(
Quote.mock_ohlcv_points([(1, 2.2, 0.9, 2), (2, 3.1, 1.9, 3),
(3, 5.1, 2.9, 5)],
t_start=10,
t_step=1))
assert callback_count == 1