Function test_float_nulls

python/pyarrow/tests/test_feather.py:237–260

(version)

@pytest.mark.pandas
def test_float_nulls(version):
    num_values = 100

    path = random_path()
    TEST_FILES.append(path)

    null_mask = np.random.randint(0, 10, size=num_values) < 3
    dtypes = ['f4', 'f8']
    expected_cols = []

    arrays = []
    for name in dtypes:
        values = np.random.randn(num_values).astype(name)
        arrays.append(pa.array(values, mask=null_mask))

        values[null_mask] = np.nan

        expected_cols.append(values)

    table = pa.table(arrays, names=dtypes)
    _check_arrow_roundtrip(table)

    df = table.to_pandas()
    _check_pandas_roundtrip(df, version=version)


@pytest.mark.pandas