wit-bindgen-cli 0.57.0

CLI tool to generate bindings for WIT documents and the component model. 
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include!(env!("BINDINGS"));

use test::results::test::*;

struct Component;

export!(Component);

impl Guest for Component {
    fn run() {
        assert_eq!(string_error(0.0), Err("zero".to_owned()));
        assert_eq!(string_error(1.0), Ok(1.0));

        assert_eq!(enum_error(0.0), Err(E::A));
        assert_eq!(enum_error(1.0), Ok(1.0));

        assert!(matches!(
            record_error(0.0),
            Err(E2 {
                line: 420,
                column: 0
            })
        ));
        assert!(matches!(
            record_error(1.0),
            Err(E2 {
                line: 77,
                column: 2
            })
        ));
        assert!(record_error(2.0).is_ok());

        assert!(matches!(
            variant_error(0.0),
            Err(E3::E2(E2 {
                line: 420,
                column: 0
            }))
        ));
        assert!(matches!(variant_error(1.0), Err(E3::E1(E::B))));
        assert!(matches!(variant_error(2.0), Err(E3::E1(E::C))));

        assert_eq!(empty_error(0), Err(()));
        assert_eq!(empty_error(1), Ok(42));
        assert_eq!(empty_error(2), Ok(2));

        assert_eq!(double_error(0), Ok(Ok(())));
        assert_eq!(double_error(1), Ok(Err("one".into())));
        assert_eq!(double_error(2), Err("two".into()));
    }
}