use std::io;

    bail!("oh no!");

    bail!(io::Error::new(io::ErrorKind::PermissionDenied, "oh no!"));

const EXPECTED_ALTDISPLAY_F: &str = "\
oh no!\
";
const EXPECTED_ALTDISPLAY_G: &str = "\
f failed
Caused by:
    oh no!\
";
const EXPECTED_ALTDISPLAY_H: &str = "\
g failed
Caused by:
    0: f failed
    1: oh no!\
";

";
const EXPECTED_ALTDEBUG_F: &str = "\
Custom {
    kind: PermissionDenied,
    error: \"oh no!\",
}\
";
const EXPECTED_ALTDEBUG_G: &str = "\
Error {
    context: \"f failed\",
    source: Custom {
        kind: PermissionDenied,
        error: \"oh no!\",
    },
}\

const EXPECTED_ALTDEBUG_H: &str = "\
Error {
    context: \"g failed\",
    source: Error {
        context: \"f failed\",
        source: Custom {
            kind: PermissionDenied,
            error: \"oh no!\",
        },
    },
}\
";

}
#[test]
fn test_altdisplay() {
    assert_eq!(EXPECTED_ALTDISPLAY_F, format!("{:#}", f().unwrap_err()));
    assert_eq!(EXPECTED_ALTDISPLAY_G, format!("{:#}", g().unwrap_err()));
    assert_eq!(EXPECTED_ALTDISPLAY_H, format!("{:#}", h().unwrap_err()));

}
#[test]
fn test_altdebug() {
    assert_eq!(EXPECTED_ALTDEBUG_F, format!("{:#?}", f().unwrap_err()));
    assert_eq!(EXPECTED_ALTDEBUG_G, format!("{:#?}", g().unwrap_err()));
    assert_eq!(EXPECTED_ALTDEBUG_H, format!("{:#?}", h().unwrap_err()));