Function test_groupby_input_mutation

xarray/tests/test_groupby.py:211–218

()

def test_groupby_input_mutation() -> None:
    # regression test for GH2153
    array = xr.DataArray([1, 2, 3], [("x", [2, 2, 1])])
    array_copy = array.copy()
    expected = xr.DataArray([3, 3], [("x", [1, 2])])
    actual = array.groupby("x").sum()
    assert_identical(expected, actual)
    assert_identical(array, array_copy)  # should not modify inputs


@pytest.mark.parametrize("use_flox", [True, False])