rust/hg-core/src/config/mod.rs

50991:d7b2701f17fa

            None => {
                if !fallback_to_default {
                    return Ok(None);
                }
                match self.get_default(section, item)? {
                    Some(default) => Ok(default.try_into()?),
                    None => {
                        self.print_devel_warning(section, item)?;
                        Ok(None)
                    }
                }

    #[test]
    fn test_default_parse() {
        let config = Config::load_from_explicit_sources(vec![])
            .expect("expected valid config");
        let ret = config.get_byte_size(b"cmdserver", b"max-log-size");
        // FIXME should be `is_ok`
        assert!(ret.is_err(), "{:?}", ret);
    }
}

50992:58390f59826f

            None => {
                if !fallback_to_default {
                    return Ok(None);
                }
                match self.get_default(section, item)? {
                    Some(default) => {
                        // Defaults are TOML values, so they're not in the same
                        // shape as in the config files.
                        // First try to convert directly to the expected type
                        let as_t = default.try_into();
                        match as_t {
                            Ok(t) => Ok(t),
                            Err(e) => {
                                // If it fails, it means that...
                                let as_bytes: Result<Option<&[u8]>, _> =
                                    default.try_into();
                                match as_bytes {
                                    Ok(bytes_opt) => {
                                        if let Some(bytes) = bytes_opt {
                                            // ...we should be able to parse it
                                            return Ok(parse(bytes));
                                        }
                                        Err(e)
                                    }
                                    Err(_) => Err(e),
                                }
                            }
                        }
                    }
                    None => {
                        self.print_devel_warning(section, item)?;
                        Ok(None)
                    }
                }

    #[test]
    fn test_default_parse() {
        let config = Config::load_from_explicit_sources(vec![])
            .expect("expected valid config");
        let ret = config.get_byte_size(b"cmdserver", b"max-log-size");
        assert!(ret.is_ok(), "{:?}", ret);
    }
}