Function casting_works

tests/array.rs:443–449

()

#[test]
fn casting_works() {
    Python::attach(|py| {
        let ob = PyArray::from_slice(py, &[1_i32, 2, 3]).into_any();

        assert!(ob.cast::<PyArray1<i32>>().is_ok());
    });
}

#[test]
fn casting_respects_element_type() {