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#![allow(
clippy::nonstandard_macro_braces,
)]
use anyhow::anyhow;
use std::error::Error as StdError;
use std::io;
use thiserror::Error;
#[derive(Error, Debug)]
#[error("outer")]
struct MyError {
source: io::Error,
}
#[test]
fn test_boxed_str() {
let error = Box::<dyn StdError + Send + Sync>::from("oh no!");
let error = anyhow!(error);
assert_eq!("oh no!", error.to_string());
assert_eq!(
"oh no!",
error
.downcast_ref::<Box<dyn StdError + Send + Sync>>()
.unwrap()
.to_string()
);
}
#[test]
fn test_boxed_thiserror() {
let error = MyError {
source: io::Error::new(io::ErrorKind::Other, "oh no!"),
};
let error = anyhow!(error);
assert_eq!("oh no!", error.source().unwrap().to_string());
}
#[test]
fn test_boxed_anyhow() {
let error = anyhow!("oh no!").context("it failed");
let error = anyhow!(error);
assert_eq!("oh no!", error.source().unwrap().to_string());
}