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TST: add categorical tests for DataFrame.equals #63247

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Dec 4, 2025
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TST: add categorical tests for DataFrame.equals #63247

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14 changes: 14 additions & 0 deletions pandas/tests/frame/methods/test_equals.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
import numpy as np

from pandas import (
Categorical,
DataFrame,
date_range,
)
Expand Down Expand Up @@ -83,3 +84,16 @@ def test_equals(self):
df3 = df1.set_index(["floats"], append=True)
df2 = df1.set_index(["floats"], append=True)
assert df3.equals(df2)

def test_equals_categorical_categories_order(self):
cat1 = Categorical(["a", "b", "a"], categories=["a", "b"])
cat2 = Categorical(["a", "b", "a"], categories=["b", "a"])
df1 = DataFrame({"c": cat1})
df2 = DataFrame({"c": cat2})

assert df1.equals(df2)

cat3 = Categorical(["a", "b", "a"], categories=["a", "b", "c"])
df3 = DataFrame({"c": cat3})

assert not df1.equals(df3)
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