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

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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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14 changes: 14 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 +1424,20 @@ def test_from_dict_columns_parameter(self):
dict([("A", [1, 2]), ("B", [4, 5])]), columns=["one", "two"]
)

@pytest.mark.parametrize(
"keys, values",
[([("a",), ("a",)], [1, 2]), ([("a",), ("b",)], [1, 2]), ([("a", "b")], [1])],
)
def test_constructor_from_dict_tuples(self, keys, values):
data_dict = {key: value for key, value in zip(keys, values)}
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Can you just parametrize dictionaries directly instead of doing this?

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Thanks @WillAyd - incorporated the change.

df = DataFrame.from_dict([data_dict])

result = df.columns
keys = list(OrderedDict.fromkeys(keys))
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)
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