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TST: add a test for selecting columns in DataFrame with big-endian dtype #57519

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Merged
mroeschke merged 1 commit into from
Feb 20, 2024
Merged

TST: add a test for selecting columns in DataFrame with big-endian dtype #57519

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10 changes: 10 additions & 0 deletions pandas/tests/frame/indexing/test_indexing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1537,6 +1537,16 @@ def test_setitem_value_coercing_dtypes(self, indexer, idx):
expected = DataFrame([[1, np.nan], [2, np.nan], ["3", np.nan]], dtype=object)
tm.assert_frame_equal(df, expected)

def test_big_endian_support_selecting_columns(self):
# GH#57457
columns = ["a"]
data = [np.array([1, 2], dtype=">f8")]
df = DataFrame(dict(zip(columns, data)))
result = df[df.columns]
dfexp = DataFrame({"a": [1, 2]}, dtype=">f8")
expected = dfexp[dfexp.columns]
tm.assert_frame_equal(result, expected)


class TestDataFrameIndexingUInt64:
def test_setitem(self):
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