import dateutil
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import pytest
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from pandas._libs.tslibs import timezones
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import pandas.util._test_decorators as td
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from pandas import Timestamp
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class TestTimestampTZConvert:
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@pytest.mark.parametrize("tzstr", ["US/Eastern", "dateutil/US/Eastern"])
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def test_astimezone(self, tzstr):
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# astimezone is an alias for tz_convert, so keep it with
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# the tz_convert tests
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utcdate = Timestamp("3/11/2012 22:00", tz="UTC")
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expected = utcdate.tz_convert(tzstr)
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result = utcdate.astimezone(tzstr)
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assert expected == result
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assert isinstance(result, Timestamp)
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@pytest.mark.parametrize(
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"stamp",
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[
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"2014-02-01 09:00",
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"2014-07-08 09:00",
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"2014-11-01 17:00",
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"2014-11-05 00:00",
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],
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)
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def test_tz_convert_roundtrip(self, stamp, tz_aware_fixture):
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tz = tz_aware_fixture
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ts = Timestamp(stamp, tz="UTC")
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converted = ts.tz_convert(tz)
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reset = converted.tz_convert(None)
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assert reset == Timestamp(stamp)
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assert reset.tzinfo is None
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assert reset == converted.tz_convert("UTC").tz_localize(None)
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@td.skip_if_windows
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def test_tz_convert_utc_with_system_utc(self):
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# from system utc to real utc
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ts = Timestamp("2001-01-05 11:56", tz=timezones.maybe_get_tz("dateutil/UTC"))
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# check that the time hasn't changed.
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assert ts == ts.tz_convert(dateutil.tz.tzutc())
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# from system utc to real utc
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ts = Timestamp("2001-01-05 11:56", tz=timezones.maybe_get_tz("dateutil/UTC"))
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# check that the time hasn't changed.
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assert ts == ts.tz_convert(dateutil.tz.tzutc())
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