def test_apply_ramp_raises_on_edge_cases():
with pytest.raises(ValueError):
x = ts.generate_series(10)
apply_ramp(x, Window(0, 0))
with pytest.raises(ValueError):
x = ts.generate_series(10)
apply_ramp(x, Window(-1, 0))
with pytest.raises(ValueError):
x = ts.generate_series(10)
apply_ramp(x, Window(2, -1))
with pytest.raises(ValueError):
x = ts.generate_series(10)
apply_ramp(x, Window(2, 11))
def test_normalize_window_raises_error_on_window_of_size_zero():
with pytest.raises(ValueError):
x = ts.generate_series(10)
normalize_window(x, 0)
with pytest.raises(ValueError):
x = ts.generate_series(10)
normalize_window(x, Window(0, 0))
def test_apply_ramp_dateoffset():
x = pd.Series(range(10),
index=pd.bdate_range('2020-02-17', freq='b', periods=10))
y = apply_ramp(x, Window(pd.DateOffset(weeks=1), pd.DateOffset(days=1)))
assert len(y) == 9
def test_apply_ramp_with_window_greater_than_series_length():
x = ts.generate_series(10)
y = apply_ramp(x, Window(11, 2))
assert len(y) == 0
def test_apply_ramp():
x = ts.generate_series(10)
y = apply_ramp(x, Window(2, 2))
assert len(y) == 8
def test_normalize_window_str():
x = ts.generate_series(10)
w = normalize_window(x, Window('1w', '2d'))
assert w.w == pd.DateOffset(weeks=1)
assert w.r == pd.DateOffset(days=2)
def test_normalize_window_handles_ramp_of_size_zero():
x = ts.generate_series(10)
w = normalize_window(x, Window(2, 0))
assert w.w == 2
assert w.r == 0
def test_normalize_window_handles_ramp_greater_than_series_length():
with pytest.raises(ValueError):
x = ts.generate_series(10)
normalize_window(x, Window(2, 11))
def test_normalize_window_handles_window_with_no_size():
x = ts.generate_series(10)
w = normalize_window(x, Window(None, 2))
assert w.w == 10
assert w.r == 2
def test_normalize_window_handles_window_with_no_ramp():
x = ts.generate_series(10)
w = normalize_window(x, Window(2, None))
assert w.w == 2
assert w.r == 2