def test_columnar_convert_disallow_features():
converter = ColumnarConverter("some_name", "foo", None, {}, {}, False, {})
df = _EMPTY_DF.assign(a=1)
with pytest.raises(ValueError,
match="expected zero feature columns, found 'a'"):
shared, type_starts, features = converter.convert(df)
def test_columnar_convert_type_default():
converter = ColumnarConverter("some_name", "foo", {}, {}, False)
shared, features = converter.convert(_EMPTY_DF)
assert "foo" in shared
assert "foo" in features
