Function test_date_range_like_errors

xarray/tests/test_cftime_offsets.py:1506–1534

()

@pytest.mark.filterwarnings("ignore:Converting non-default")
def test_date_range_like_errors():
    src = date_range("1899-02-03", periods=20, freq="D", use_cftime=False)
    src = src[np.arange(20) != 10]  # Remove 1 day so the frequency is not inferable.

    with pytest.raises(
        ValueError,
        match=r"`date_range_like` was unable to generate a range as the source frequency was not inferable.",
    ):
        date_range_like(src, "gregorian")

    src = DataArray(
        np.array(
            [["1999-01-01", "1999-01-02"], ["1999-01-03", "1999-01-04"]],
            dtype=np.datetime64,
        ),
        dims=("x", "y"),
    )
    with pytest.raises(
        ValueError,
        match=r"'source' must be a 1D array of datetime objects for inferring its range.",
    ):
        date_range_like(src, "noleap")

    da = DataArray([1, 2, 3, 4], dims=("time",))
    with pytest.raises(
        ValueError,
        match=r"'source' must be a 1D array of datetime objects for inferring its range.",
    ):
        date_range_like(da, "noleap")


def as_timedelta_not_implemented_error():