def test_infer_from_tdi_mismatch(self):
# GH#23539
# fast-path for invalidating a frequency if the passed data already
# has one and it does not match the `freq` input
tdi = timedelta_range("1 second", periods=100, freq="1s")
msg = ("Inferred frequency .* from passed values does "
"not conform to passed frequency")
with pytest.raises(ValueError, match=msg):
TimedeltaIndex(tdi, freq="D")
with pytest.raises(ValueError, match=msg):
# GH#23789
TimedeltaArray(tdi, freq="D")
with pytest.raises(ValueError, match=msg):
TimedeltaIndex(tdi._data, freq="D")
with pytest.raises(ValueError, match=msg):
TimedeltaArray(tdi._data, freq="D")
def test_explicit_none_freq(self):
# Explicitly passing freq=None is respected
tdi = timedelta_range(1, periods=5)
assert tdi.freq is not None
result = TimedeltaIndex(tdi, freq=None)
assert result.freq is None
result = TimedeltaIndex(tdi._data, freq=None)
assert result.freq is None
tda = TimedeltaArray(tdi, freq=None)
assert tda.freq is None
