import pytest
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from pandas import (
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NaT,
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date_range,
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to_datetime,
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)
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import pandas._testing as tm
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class TestPickle:
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def test_pickle(self):
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# GH#4606
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idx = to_datetime(["2013-01-01", NaT, "2014-01-06"])
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idx_p = tm.round_trip_pickle(idx)
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assert idx_p[0] == idx[0]
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assert idx_p[1] is NaT
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assert idx_p[2] == idx[2]
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def test_pickle_dont_infer_freq(self):
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# GH#11002
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# don't infer freq
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idx = date_range("1750-1-1", "2050-1-1", freq="7D")
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idx_p = tm.round_trip_pickle(idx)
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tm.assert_index_equal(idx, idx_p)
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def test_pickle_after_set_freq(self):
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dti = date_range("20130101", periods=3, tz="US/Eastern", name="foo")
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dti = dti._with_freq(None)
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res = tm.round_trip_pickle(dti)
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tm.assert_index_equal(res, dti)
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def test_roundtrip_pickle_with_tz(self):
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# GH#8367
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# round-trip of timezone
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index = date_range("20130101", periods=3, tz="US/Eastern", name="foo")
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unpickled = tm.round_trip_pickle(index)
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tm.assert_index_equal(index, unpickled)
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@pytest.mark.parametrize("freq", ["B", "C"])
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def test_pickle_unpickle(self, freq):
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rng = date_range("2009-01-01", "2010-01-01", freq=freq)
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unpickled = tm.round_trip_pickle(rng)
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assert unpickled.freq == freq
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