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#![cfg(feature="std")]
use snafu::prelude::*;
use std::error::Error as StdError;
#[derive(Debug, Snafu)]
#[snafu(display("name: [{}]", name))]
struct Error {
name: String,
}
type Result<T, E = Error> = std::result::Result<T, E>;
fn example(name: &str) -> Result<()> {
ensure!(name.is_empty(), Snafu { name });
Ok(())
}
#[test]
fn implements_error() {
fn check<T: StdError>() {}
check::<Error>();
let name = "must be empty";
let e = example(name).unwrap_err();
assert_eq!(e.name, name);
assert!(e.source().is_none());
let display = e.to_string();
assert_eq!(display, "name: [must be empty]");
}
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