Function planner_test_runner 

pub fn planner_test_runner<F, Ft, R>(
    tests_dir: impl AsRef<Path>,
    runner_fn: F,
) -> Result<()>
where
    F: Fn() -> Ft + Send + Sync + 'static + Clone,
    Ft: Future<Output = Result<R>> + Send,
    R: PlannerTestRunner,

Test runner based on libtest-mimic.