101 lines
2.9 KiB
Python
101 lines
2.9 KiB
Python
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from datetime import datetime
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import numpy as np
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import pytest
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from pytz import UTC
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from pandas._libs.tslib import iNaT
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from pandas._libs.tslibs import conversion, timezones, tzconversion
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from pandas import Timestamp, date_range
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import pandas._testing as tm
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def _compare_utc_to_local(tz_didx):
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def f(x):
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return conversion.tz_convert_single(x, UTC, tz_didx.tz)
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result = tzconversion.tz_convert(tz_didx.asi8, UTC, tz_didx.tz)
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expected = np.vectorize(f)(tz_didx.asi8)
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tm.assert_numpy_array_equal(result, expected)
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def _compare_local_to_utc(tz_didx, utc_didx):
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def f(x):
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return conversion.tz_convert_single(x, tz_didx.tz, UTC)
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result = tzconversion.tz_convert(utc_didx.asi8, tz_didx.tz, UTC)
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expected = np.vectorize(f)(utc_didx.asi8)
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tm.assert_numpy_array_equal(result, expected)
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def test_tz_convert_single_matches_tz_convert_hourly(tz_aware_fixture):
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tz = tz_aware_fixture
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tz_didx = date_range("2014-03-01", "2015-01-10", freq="H", tz=tz)
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utc_didx = date_range("2014-03-01", "2015-01-10", freq="H")
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_compare_utc_to_local(tz_didx)
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_compare_local_to_utc(tz_didx, utc_didx)
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@pytest.mark.parametrize("freq", ["D", "A"])
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def test_tz_convert_single_matches_tz_convert(tz_aware_fixture, freq):
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tz = tz_aware_fixture
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tz_didx = date_range("2000-01-01", "2020-01-01", freq=freq, tz=tz)
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utc_didx = date_range("2000-01-01", "2020-01-01", freq=freq)
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_compare_utc_to_local(tz_didx)
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_compare_local_to_utc(tz_didx, utc_didx)
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@pytest.mark.parametrize(
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"arr",
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[
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pytest.param(np.array([], dtype=np.int64), id="empty"),
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pytest.param(np.array([iNaT], dtype=np.int64), id="all_nat"),
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],
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)
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def test_tz_convert_corner(arr):
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result = tzconversion.tz_convert(
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arr, timezones.maybe_get_tz("US/Eastern"), timezones.maybe_get_tz("Asia/Tokyo")
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)
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tm.assert_numpy_array_equal(result, arr)
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@pytest.mark.parametrize("copy", [True, False])
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@pytest.mark.parametrize("dtype", ["M8[ns]", "M8[s]"])
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def test_length_zero_copy(dtype, copy):
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arr = np.array([], dtype=dtype)
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result = conversion.ensure_datetime64ns(arr, copy=copy)
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assert result.base is (None if copy else arr)
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class SubDatetime(datetime):
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pass
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@pytest.mark.parametrize(
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"dt, expected",
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[
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pytest.param(
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Timestamp("2000-01-01"), Timestamp("2000-01-01", tz=UTC), id="timestamp"
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),
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pytest.param(
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datetime(2000, 1, 1), datetime(2000, 1, 1, tzinfo=UTC), id="datetime"
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),
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pytest.param(
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SubDatetime(2000, 1, 1),
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SubDatetime(2000, 1, 1, tzinfo=UTC),
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id="subclassed_datetime",
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),
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],
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)
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def test_localize_pydatetime_dt_types(dt, expected):
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# GH 25851
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# ensure that subclassed datetime works with
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# localize_pydatetime
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result = conversion.localize_pydatetime(dt, UTC)
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assert result == expected
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