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TST: Add test of DataFrame.xs() with duplicates (#13719) #22294

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Merged
merged 3 commits into from
Sep 15, 2018
Merged

TST: Add test of DataFrame.xs() with duplicates (#13719) #22294

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5e79659
TST: Add test of DataFrame.xs() with duplicates (#13719)
Aug 12, 2018
5a2e7b1
Merge branch 'master' into add-xs-test
nmusolino Aug 12, 2018
ee88689
Move duplicated-index case to separate test
Aug 14, 2018
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9 changes: 8 additions & 1 deletion pandas/tests/test_multilevel.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@
import numpy as np

from pandas.core.index import Index, MultiIndex
from pandas import Panel, DataFrame, Series, notna, isna, Timestamp, read_csv
from pandas import Panel, DataFrame, Series, notna, isna, Timestamp, concat, read_csv

from pandas.core.dtypes.common import is_float_dtype, is_integer_dtype
import pandas.core.common as com
Expand Down Expand Up @@ -486,6 +486,13 @@ def test_xs_partial(self):
expected = df.loc['foo', 'one']
tm.assert_frame_equal(result, expected)

# DataFrame with a MultiIndex containing duplicates (#13719)
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@jreback jreback Aug 13, 2018 •
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pls add as a separate test.

df_dup = concat([self.frame] * 2)
assert not df_dup.index.is_unique
expected = concat([self.frame.xs('one', level='second')] * 2)
tm.assert_frame_equal(df_dup.xs('one', level='second'), expected)
tm.assert_frame_equal(df_dup.xs(['one'], level=['second']), expected)

def test_xs_level(self):
result = self.frame.xs('two', level='second')
expected = self.frame[self.frame.index.get_level_values(1) == 'two']
Expand Down