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