Trait router_error::DowncastErrorForTest

pub trait DowncastErrorForTest {
    // Required method
    fn downcast_for_test<E: Explain>(&self) -> &E;
}

To test the error case of e.g. a Router implementation, it will be helpful to cast the erased error back to an expected error type and match on it.

Do not use this in production as conditioning behavior on error cases is extremely fragile.

Required Methods

fn downcast_for_test<E: Explain>(&self) -> &E

For tests only. Downcast the erased error to E or panic if fails.

Object Safety

This trait is not object safe.

Implementors

impl DowncastErrorForTest for dyn Explain