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TST: add test for df construction from dict with tuples #29497

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Merged
merged 3 commits into from
Nov 9, 2019
Merged

TST: add test for df construction from dict with tuples #29497

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25bf13a
add test for frame construction from dict with tuples
ganevgv Nov 9, 2019
86f6c74
parametrize full data_dict
ganevgv Nov 9, 2019
957c964
refactor parametrize
ganevgv Nov 9, 2019
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17 changes: 17 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 @@ -1424,6 +1424,23 @@ def test_from_dict_columns_parameter(self):
dict([("A", [1, 2]), ("B", [4, 5])]), columns=["one", "two"]
)

@pytest.mark.parametrize(
"data_dict, keys",
[
([{("a",): 1}, {("a",): 2}], [("a",)]),
([OrderedDict([(("a",), 1), (("b",), 2)])], [("a",), ("b",)]),
([{("a", "b"): 1}], [("a", "b")]),
],
)
def test_constructor_from_dict_tuples(self, data_dict, keys):
# GH 16769
df = DataFrame.from_dict(data_dict)

result = df.columns
expected = Index(keys, dtype="object", tupleize_cols=False)

tm.assert_index_equal(result, expected)

def test_constructor_Series_named(self):
a = Series([1, 2, 3], index=["a", "b", "c"], name="x")
df = DataFrame(a)
Expand Down