def test_no_overlap(data):
# test step equals length
node = Window(length=1, step=None)
node.i.data = data.next(11)
node.update()
o1 = node.o.data
node.clear()
node.i.data = data.next(11)
node.update()
o2 = node.o.data
# assert continuity (no repeated samples)
pd.testing.assert_frame_equal(o1.append(o2), data._data.iloc[0:20])
# assert window length
assert len(o2) == 10
def test_low_step(data):
# step lower than length
node = Window(length=1, step=.2)
data.reset()
node.i.data = data.next(11)
node.update()
o1 = node.o.data
node.clear()
node.i.data = data.next(3)
node.update()
o2 = node.o.data
# assert step size
assert (o2.index[0] - o1.index[0]).total_seconds() == 0.2
# assert window length
assert len(o2) == 10