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#![cfg(feature="std")]
// This test asserts that errors can be used across threads.
use std::thread;
use snafu::prelude::*;
#[derive(Debug, Snafu)]
enum InnerError {
Boom,
}
#[derive(Debug, Snafu)]
enum Error {
Leaf {
name: String,
},
Wrapper {
source: InnerError,
},
BoxedWrapper {
source: Box<InnerError>,
},
BoxedTraitObjectSend {
source: Box<dyn std::error::Error + Send + 'static>,
},
BoxedTraitObjectSendSync {
source: Box<dyn std::error::Error + Send + Sync + 'static>,
},
}
fn example() -> Result<(), Error> {
BoomSnafu.fail().context(WrapperSnafu)
}
#[test]
fn implements_thread_safe_error() {
fn check_error<E: std::error::Error>() {}
check_error::<InnerError>();
check_error::<Error>();
fn check_send<E: Send>() {}
check_send::<InnerError>();
check_send::<Error>();
let t = thread::spawn(move || example());
let v = t.join().expect("Thread panicked");
v.unwrap_err();
}
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