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testing broadcast on multiindex #44094

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Merged
merged 7 commits into from
Nov 29, 2021
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Merged

testing broadcast on multiindex #44094

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a45cb67
testing broadcast on multiindex
gabrieldi95 Oct 19, 2021
43d4167
Merge remote-tracking branch 'upstream/master' into tst_issue_34388
gabrieldi95 Nov 16, 2021
84ffae7
parameterized and removed inplace
gabrieldi95 Nov 17, 2021
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changed test location
gabrieldi95 Nov 19, 2021
cd67838
Merge remote-tracking branch 'upstream/master' into tst_issue_34388
gabrieldi95 Nov 19, 2021
a13f846
forgot self
gabrieldi95 Nov 19, 2021
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Merge remote-tracking branch 'upstream/master' into tst_issue_34388
gabrieldi95 Nov 28, 2021
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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 @@ -1882,3 +1882,18 @@ def _constructor_sliced(self):

result = sdf + sdf
tm.assert_frame_equal(result, expected)


def test_broadcast_multiindex():
# GH34388
df1 = DataFrame({"A": [0, 1, 2], "B": [1, 2, 3]})
df1.columns.set_names("L1", inplace=True)
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don't use inplace in tests, unless its actually testing inplace.


df2 = DataFrame({("A", "C"): [0, 0, 0], ("A", "D"): [0, 0, 0]})
df2.columns.set_names(["L1", "L2"], inplace=True)

result = df1.add(df2)
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parameterize this over level=0 and level=None

expected = DataFrame({("A", "C"): [0, 1, 2], ("A", "D"): [0, 1, 2]})
expected.columns.set_names(["L1", "L2"], inplace=True)

tm.assert_frame_equal(result, expected)