axum-test 16.4.0

For spinning up and testing Axum servers
Documentation 
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use http::StatusCode;
use std::fmt;

#[derive(Debug, Copy, Clone, PartialEq)]
pub struct StatusCodeFormatter(pub StatusCode);

impl fmt::Display for StatusCodeFormatter {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        let code = self.0.as_u16();
        let reason = self.0.canonical_reason().unwrap_or("unknown status code");

        write!(f, "{code} ({reason})")
    }
}

#[cfg(test)]
mod test_fmt {
    use super::*;

    #[test]
    fn it_should_format_with_reason_where_available() {
        let status_code = StatusCode::UNAUTHORIZED;
        let debug = StatusCodeFormatter(status_code);
        let output = format!("{}", debug);

        assert_eq!(output, "401 (Unauthorized)");
    }

    #[test]
    fn it_should_provide_only_number_where_reason_is_unavailable() {
        let status_code = StatusCode::from_u16(218).unwrap(); // Unofficial Apache status code.
        let debug = StatusCodeFormatter(status_code);
        let output = format!("{}", debug);

        assert_eq!(output, "218 (unknown status code)");
    }
}