use snafu::Snafu;
#[derive(Debug, Snafu)]
enum Error {
Mine,
}
type Result<T, E = Error> = std::result::Result<T, E>;
fn other_result() -> Result<i32, ()> {
Err(())
}
fn map_result() -> Result<i32> {
other_result().map_err(|_| Mine.build())
}
#[test]
fn implements_error() {
fn check<T: std::error::Error>() {}
check::<Error>();
map_result().unwrap_err();
}