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Aug 30, 2021
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TST: categorical reindex with added categories #43210

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3b39ce5
TST: categorical reindex with added categories
Sheogorath27 Aug 25, 2021
036b81a
Update test_reindex.py
Sheogorath27 Aug 26, 2021
ba944d6
TST: Dataframe construct from series.
Sheogorath27 Aug 28, 2021
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27 changes: 27 additions & 0 deletions pandas/tests/frame/test_constructors.py
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,7 @@
Series,
Timedelta,
Timestamp,
cut,
date_range,
isna,
)
Expand Down Expand Up @@ -2353,6 +2354,32 @@ def test_construct_with_two_categoricalindex_series(self):
)
tm.assert_frame_equal(result, expected)

def test_constructor_series_nonexact_categoricalindex(self):
# GH 42424
ser = Series(range(0, 100))
ser1 = cut(ser, 10).value_counts().head(5)
ser2 = cut(ser, 10).value_counts().tail(5)
result = DataFrame({"1": ser1, "2": ser2})
index = CategoricalIndex(
[
Interval(-0.099, 9.9, closed="right"),
Interval(9.9, 19.8, closed="right"),
Interval(19.8, 29.7, closed="right"),
Interval(29.7, 39.6, closed="right"),
Interval(39.6, 49.5, closed="right"),
Interval(49.5, 59.4, closed="right"),
Interval(59.4, 69.3, closed="right"),
Interval(69.3, 79.2, closed="right"),
Interval(79.2, 89.1, closed="right"),
Interval(89.1, 99, closed="right"),
],
ordered=True,
)
expected = DataFrame(
{"1": [10] * 5 + [np.nan] * 5, "2": [np.nan] * 5 + [10] * 5}, index=index
)
tm.assert_frame_equal(expected, result)

def test_from_M8_structured(self):
dates = [(datetime(2012, 9, 9, 0, 0), datetime(2012, 9, 8, 15, 10))]
arr = np.array(dates, dtype=[("Date", "M8[us]"), ("Forecasting", "M8[us]")])
Expand Down
20 changes: 20 additions & 0 deletions pandas/tests/indexes/categorical/test_reindex.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
CategoricalIndex,
DataFrame,
Index,
Interval,
Series,
)
import pandas._testing as tm
Expand Down Expand Up @@ -103,3 +104,22 @@ def test_reindex_not_category(self, index_df, index_res, index_exp):
result = df.reindex(index=index_res)
expected = DataFrame(index=index_exp)
tm.assert_frame_equal(result, expected)

def test_reindex_categorical_added_category(self):
# GH 42424
ci = CategoricalIndex(
[Interval(0, 1, closed="right"), Interval(1, 2, closed="right")],
ordered=True,
)
ci_add = CategoricalIndex(
[
Interval(0, 1, closed="right"),
Interval(1, 2, closed="right"),
Interval(2, 3, closed="right"),
Interval(3, 4, closed="right"),
],
ordered=True,
)
result, _ = ci.reindex(ci_add)
expected = ci_add
tm.assert_index_equal(expected, result)