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import numpy as np
import pytest
import pytz
from pandas._libs.tslibs.tzconversion import tz_localize_to_utc
class TestTZLocalizeToUTC:
def test_tz_localize_to_utc_ambiguous_infer(self):
# val is a timestamp that is ambiguous when localized to US/Eastern
val = 1_320_541_200_000_000_000
vals = np.array([val, val - 1, val], dtype=np.int64)
with pytest.raises(pytz.AmbiguousTimeError, match="2011-11-06 01:00:00"):
tz_localize_to_utc(vals, pytz.timezone("US/Eastern"), ambiguous="infer")
with pytest.raises(pytz.AmbiguousTimeError, match="are no repeated times"):
tz_localize_to_utc(vals[:1], pytz.timezone("US/Eastern"), ambiguous="infer")
vals[1] += 1
msg = "There are 2 dst switches when there should only be 1"
with pytest.raises(pytz.AmbiguousTimeError, match=msg):
tz_localize_to_utc(vals, pytz.timezone("US/Eastern"), ambiguous="infer")