def test_freq_setter(self, values, freq):
# GH 20678
idx = TimedeltaIndex(values)
# can set to an offset, converting from string if necessary
idx.freq = freq
assert idx.freq == freq
assert isinstance(idx.freq, ABCDateOffset)
# can reset to None
idx.freq = None
assert idx.freq is None
def test_freq_setter_errors(self):
# GH 20678
idx = TimedeltaIndex(['0 days', '2 days', '4 days'])
# setting with an incompatible freq
msg = ('Inferred frequency 2D from passed values does not conform to '
'passed frequency 5D')
with tm.assert_raises_regex(ValueError, msg):
idx.freq = '5D'
# setting with a non-fixed frequency
msg = r'<2 \* BusinessDays> is a non-fixed frequency'
with tm.assert_raises_regex(ValueError, msg):
idx.freq = '2B'
# setting with non-freq string
with tm.assert_raises_regex(ValueError, 'Invalid frequency'):
idx.freq = 'foo'
def test_freq_setter_errors(self):
# GH 20678
idx = TimedeltaIndex(["0 days", "2 days", "4 days"])
# setting with an incompatible freq
msg = ("Inferred frequency 2D from passed values does not conform to "
"passed frequency 5D")
with pytest.raises(ValueError, match=msg):
idx.freq = "5D"
# setting with a non-fixed frequency
msg = r"<2 \* BusinessDays> is a non-fixed frequency"
with pytest.raises(ValueError, match=msg):
idx.freq = "2B"
# setting with non-freq string
with pytest.raises(ValueError, match="Invalid frequency"):
idx.freq = "foo"
