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TST #22663: Operation between DataFrame with non-numeric types and incomplete series #34517

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Merged
merged 3 commits into from
Jun 2, 2020
Merged

TST #22663: Operation between DataFrame with non-numeric types and incomplete series #34517

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TST #22663
Jun 1, 2020
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TST #22663: Operation between DataFrame with non-numeric types and in…
Jun 2, 2020
557a04d
TST #22663: Operation between DataFrame with non-numeric types and in…
Jun 2, 2020
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15 changes: 15 additions & 0 deletions pandas/tests/frame/test_arithmetic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1536,3 +1536,18 @@ def test_dataframe_blockwise_slicelike():

expected = pd.DataFrame({i: left[i] + right[i] for i in left.columns})
tm.assert_frame_equal(res, expected)


@pytest.mark.parametrize(
"df, col_dtype",
[
(pd.DataFrame([[1.0, 2.0], [4.0, 5.0]], columns=list("ab")), "float64"),
(pd.DataFrame([[1.0, "b"], [4.0, "b"]], columns=list("ab")), "object"),
],
)
def test_dataframe_operation_with_non_numeric_types(df, col_dtype):
# GH #22663
expected = pd.DataFrame([[0.0, np.nan], [3.0, np.nan]], columns=list("ab"))
expected = expected.astype({"b": col_dtype})
result = df + pd.Series([-1.0], index=list("a"))
tm.assert_frame_equal(result, expected)