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- import numpy as np
- from pandas import Index, Timedelta, timedelta_range
- import pandas._testing as tm
- class TestJoin:
- def test_append_join_nondatetimeindex(self):
- rng = timedelta_range("1 days", periods=10)
- idx = Index(["a", "b", "c", "d"])
- result = rng.append(idx)
- assert isinstance(result[0], Timedelta)
- # it works
- rng.join(idx, how="outer")
- def test_join_self(self, join_type):
- index = timedelta_range("1 day", periods=10)
- joined = index.join(index, how=join_type)
- tm.assert_index_equal(index, joined)
- def test_does_not_convert_mixed_integer(self):
- df = tm.makeCustomDataframe(
- 10,
- 10,
- data_gen_f=lambda *args, **kwargs: np.random.randn(),
- r_idx_type="i",
- c_idx_type="td",
- )
- str(df)
- cols = df.columns.join(df.index, how="outer")
- joined = cols.join(df.columns)
- assert cols.dtype == np.dtype("O")
- assert cols.dtype == joined.dtype
- tm.assert_index_equal(cols, joined)
- def test_join_preserves_freq(self):
- # GH#32157
- tdi = timedelta_range("1 day", periods=10)
- result = tdi[:5].join(tdi[5:], how="outer")
- assert result.freq == tdi.freq
- tm.assert_index_equal(result, tdi)
- result = tdi[:5].join(tdi[6:], how="outer")
- assert result.freq is None
- expected = tdi.delete(5)
- tm.assert_index_equal(result, expected)
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