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TST Add test for loc on sparse dataframes #40593

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Merged
merged 5 commits into from
Apr 2, 2021
Merged

TST Add test for loc on sparse dataframes #40593

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183870b
TST Add test for loc on sparse dataframes
EricLeer Mar 23, 2021
d46710d
TST Add test for sparse series
EricLeer Mar 28, 2021
b13e6cd
TST move sparse series tests
EricLeer Mar 30, 2021
362ae26
TST Fix failing test
EricLeer Mar 31, 2021
6b08715
TST Move back sparse series tests
EricLeer Apr 1, 2021
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30 changes: 30 additions & 0 deletions pandas/tests/indexing/test_loc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1163,6 +1163,36 @@ def test_loc_getitem_listlike_all_retains_sparse(self):
result = df.loc[[0, 1]]
tm.assert_frame_equal(result, df)

@td.skip_if_no_scipy
def test_loc_getitem_sparse_frame(self):
# GH34687
from scipy.sparse import eye

df = DataFrame.sparse.from_spmatrix(eye(5))
result = df.loc[range(2)]
expected = DataFrame(
[[1.0, 0.0, 0.0, 0.0, 0.0], [0.0, 1.0, 0.0, 0.0, 0.0]],
dtype=SparseDtype("float64", 0.0),
)
tm.assert_frame_equal(result, expected)

result = df.loc[range(2)].loc[range(1)]
expected = DataFrame(
[[1.0, 0.0, 0.0, 0.0, 0.0]], dtype=SparseDtype("float64", 0.0)
)
tm.assert_frame_equal(result, expected)

ser = df[0]
ser.name = None

result = ser.loc[range(2)]
expected = Series([1.0, 0.0], dtype=SparseDtype("float64", 0.0))
tm.assert_series_equal(result, expected)

result = ser.loc[range(3)].loc[range(2)]
expected = Series([1.0, 0.0], dtype=SparseDtype("float64", 0.0))
tm.assert_series_equal(result, expected)

@pytest.mark.parametrize("key_type", [iter, np.array, Series, Index])
def test_loc_getitem_iterable(self, float_frame, key_type):
idx = key_type(["A", "B", "C"])
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