58 lines
1.7 KiB
Python
58 lines
1.7 KiB
Python
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import numpy as np
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import pytest
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from pandas import (
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Index,
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Series,
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array,
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date_range,
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)
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import pandas._testing as tm
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class TestView:
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def test_view_i8_to_datetimelike(self):
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dti = date_range("2000", periods=4, tz="US/Central")
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ser = Series(dti.asi8)
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result = ser.view(dti.dtype)
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tm.assert_datetime_array_equal(result._values, dti._data._with_freq(None))
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pi = dti.tz_localize(None).to_period("D")
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ser = Series(pi.asi8)
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result = ser.view(pi.dtype)
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tm.assert_period_array_equal(result._values, pi._data)
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def test_view_tz(self):
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# GH#24024
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ser = Series(date_range("2000", periods=4, tz="US/Central"))
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result = ser.view("i8")
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expected = Series(
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[
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946706400000000000,
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946792800000000000,
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946879200000000000,
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946965600000000000,
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]
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)
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tm.assert_series_equal(result, expected)
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@pytest.mark.parametrize(
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"first", ["m8[ns]", "M8[ns]", "M8[ns, US/Central]", "period[D]"]
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)
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@pytest.mark.parametrize(
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"second", ["m8[ns]", "M8[ns]", "M8[ns, US/Central]", "period[D]"]
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)
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@pytest.mark.parametrize("box", [Series, Index, array])
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def test_view_between_datetimelike(self, first, second, box):
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dti = date_range("2016-01-01", periods=3)
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orig = box(dti)
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obj = orig.view(first)
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assert obj.dtype == first
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tm.assert_numpy_array_equal(np.asarray(obj.view("i8")), dti.asi8)
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res = obj.view(second)
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assert res.dtype == second
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tm.assert_numpy_array_equal(np.asarray(obj.view("i8")), dti.asi8)
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