Function test_harness::run_with_harness

pub async fn run_with_harness<H, F, Fut>(test_func: F)where
    H: TestHarness,
    F: FnOnce(H) -> Fut + Send + 'static,
    Fut: Future<Output = ()> + Send + 'static,

We can run any test which is an async function from some harness H to a result