Function unbind_works

tests/array.rs:470–482

()

#[test]
fn unbind_works() {
    let arr: Py<PyArray1<_>> = Python::attach(|py| {
        let arr = PyArray::from_slice(py, &[1_i32, 2, 3]);

        arr.unbind()
    });

    Python::attach(|py| {
        let arr = arr.bind(py);

        assert_eq!(arr.readonly().as_slice().unwrap(), &[1, 2, 3]);
    });
}

#[test]
fn copy_to_works() {