#[subtest]
#[test]
fn parent() {
#[subtest]
#[test]
fn nested_sync() {}
#[subtest]
#[tokio::test]
async fn nested_async() {}
#[subtest]
#[rstest]
#[case(0, 0)]
#[case(1, 1)]
#[case(2, 1)]
#[case(3, 2)]
#[case(4, 3)]
fn nested_rstest(#[case] input: u32, #[case] expected: u32) {}
}