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Manual Backport PR #45731 on branch 1.4.x (TST: Add @td.skip_if_no_scipy to failing test) #45739

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Merged
merged 1 commit into from
Jan 31, 2022
+15 −11
Merged

Manual Backport PR #45731 on branch 1.4.x (TST: Add @td.skip_if_no_scipy to failing test) #45739

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26 changes: 15 additions & 11 deletions pandas/tests/series/methods/test_interpolate.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
isna,
)
import pandas._testing as tm
from pandas.util.version import Version


@pytest.fixture(
Expand Down Expand Up @@ -778,7 +779,8 @@ def test_interp_non_timedelta_index(self, interp_methods_ind, ind):
with pytest.raises(ValueError, match=expected_error):
df[0].interpolate(method=method, **kwargs)

def test_interpolate_timedelta_index(self, interp_methods_ind):
@td.skip_if_no_scipy
def test_interpolate_timedelta_index(self, request, interp_methods_ind):
"""
Tests for non numerical index types - object, period, timedelta
Note that all methods except time, index, nearest and values
Expand All @@ -789,17 +791,19 @@ def test_interpolate_timedelta_index(self, interp_methods_ind):
df = pd.DataFrame([0, 1, np.nan, 3], index=ind)

method, kwargs = interp_methods_ind
if method == "pchip":
pytest.importorskip("scipy")

if method in {"linear", "pchip"}:
result = df[0].interpolate(method=method, **kwargs)
expected = Series([0.0, 1.0, 2.0, 3.0], name=0, index=ind)
tm.assert_series_equal(result, expected)
else:
pytest.skip(
"This interpolation method is not supported for Timedelta Index yet."
import scipy

if method in {"cubic", "zero"} or (
method == "barycentric" and Version(scipy.__version__) < Version("1.5.0")
):
request.node.add_marker(
pytest.mark.xfail(
reason=f"{method} interpolation is not supported for TimedeltaIndex"
)
)
result = df[0].interpolate(method=method, **kwargs)
expected = Series([0.0, 1.0, 2.0, 3.0], name=0, index=ind)
tm.assert_series_equal(result, expected)

@pytest.mark.parametrize(
"ascending, expected_values",
Expand Down