def test_duplicate_multiple_nested_function_update():
points = Points([])
f = (points * 0.5 + points * 0.5) * 2
points.append((0, 1))
assert f.is_updating is False
assert f.domain == Interval.point(0)
assert f.y(0) == 2
points.append((1, 1))
assert f.is_updating is False
assert f.domain == Interval(0, 1)
assert f.y(1) == 2
def test_duplicate_function_update():
points = Points([])
f = points + points
points.append((0, 1))
assert points.is_updating is False
assert f.is_updating is False
assert f.domain == Interval.point(0)
assert f.y(0) == 2
points.append((1, 1))
assert points.is_updating is False
assert f.is_updating is False
assert f.domain == Interval(0, 1)
assert f.y(1) == 2
def test_update():
p1 = Points([(0, 1), (1, 1)])
p2 = Points([(2, 2), (4, 2)])
f = Aggregate([p1, p2], tfm=lambda x, ys: sum(ys), union=False)
assert f.domain.is_empty
assert f(0) is None
assert f(1.5) is None
assert f(3) is None
p1.append((2, 1))
assert f.domain.start == 2
assert f.domain.end == 2
assert not f.domain.start_open
assert not f.domain.end_open
assert f(2) == 3
assert f.is_updating is False
p1.append((3, 1))
assert f.domain.start == 2
assert f.domain.end == 3
assert not f.domain.start_open
assert not f.domain.end_open
assert f(2) == 3
assert f(3) == 3
assert f.is_updating is False
p1.append((4, 1))
assert f.domain.start == 2
assert f.domain.end == 4
assert not f.domain.start_open
assert not f.domain.end_open
assert f(4) == 3
assert f.is_updating is False
def test_nested_update():
p1 = Points([(0, 1), (1, 1)])
p2 = Points([(2, 2), (4, 2)])
f = Aggregate([p1 * 2, p2 * 2], tfm=lambda x, ys: sum(ys))
assert f.domain.is_empty
assert f(0) is None
assert f(1.5) is None
assert f(3) is None
p1.append((2, 1))
assert f.domain.start == 2
assert f.domain.end == 2
assert not f.domain.start_open
assert not f.domain.end_open
assert f(2) == 6
p1.append((3, 1))
assert f.domain.start == 2
assert f.domain.end == 3
assert not f.domain.start_open
assert not f.domain.end_open
assert f(2) == 6
assert f(3) == 6
def test_multiple_nested_offset_update():
p1 = Points([(0, 1), (1, 1)])
p2 = Points([(2, 2), (4, 2)])
f = (p1.offset(10) * 2 + p2.offset(10) * 2) / 2
assert f.domain.is_empty
assert f(10) is None
assert f(11.5) is None
assert f(13) is None
p1.append((2, 1))
assert f.domain.start == 12
assert f.domain.end == 12
assert not f.domain.start_open
assert not f.domain.end_open
assert f(12) == 3
p1.append((3, 1))
assert f.domain.start == 12
assert f.domain.end == 13
assert not f.domain.start_open
assert not f.domain.end_open
assert f(12) == 3
assert f(13) == 3
def test_update_from_empty():
p1 = Points([])
f = Aggregate([p1], tfm=lambda x, ys: sum(ys))
assert f(0) is None
p1.append((0, 1))
assert f(0) == 1
p1.append((1, 2))
assert f(1) == 2
p1.append((2, 3))
assert f(2) == 3
def test_update_from_empty():
ps = Points([])
assert ps(0) is None
ps.append((0, 1))
assert ps.is_updating is False
assert ps(0) == 1
ps.append((1, 2))
assert ps.is_updating is False
assert ps(1) == 2
ps.append((2, 3))
assert ps.is_updating is False
assert ps(2) == 3
def test_update_ema():
points = Points(test_util.point_gen([1, 2, 1]))
f = points.ema(0.5, is_period=False)
assert f(3) is None
points.append((3, 2))
assert f(3) == approx((1.25 + 2.0) * 0.5, abs=0.01)