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TST: add test for nested OrderedDict in constructor #50060

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merged 5 commits into from
Dec 6, 2022
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Merged

TST: add test for nested OrderedDict in constructor #50060

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5d7c81f
add test for nested OrderedDict to make sure sort is maintained
codamuse Dec 4, 2022
ba268ef
Merge branch 'main' into test_nested_ordered_dicts
codamuse Dec 6, 2022
aa93be3
Merge remote-tracking branch 'upstream/main' into test_nested_ordered…
codamuse Dec 6, 2022
0908fb4
Merge branch 'test_nested_ordered_dicts' of https://github.com/codamu…
codamuse Dec 6, 2022
20e9228
docs: add gh reference
codamuse Dec 6, 2022
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9 changes: 9 additions & 0 deletions pandas/tests/frame/test_constructors.py
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Expand Up @@ -1395,6 +1395,15 @@ def test_constructor_list_of_dicts(self):
expected = DataFrame(index=[0])
tm.assert_frame_equal(result, expected)

def test_constructor_ordered_dict_nested_preserve_order(self):
nested1 = OrderedDict([("b", 1), ("a", 2)])
nested2 = OrderedDict([("b", 2), ("a", 5)])
data = OrderedDict([("col2", nested1), ("col1", nested2)])
result = DataFrame(data)
data = {"col2": [1, 2], "col1": [2, 5]}
expected = DataFrame(data=data, index=["b", "a"])
tm.assert_frame_equal(result, expected)

@pytest.mark.parametrize("dict_type", [dict, OrderedDict])
def test_constructor_ordered_dict_preserve_order(self, dict_type):
# see gh-13304
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