kxio 1.1.2

Provides injectable Filesystem and Network resources to make code more testable
Documentation 
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use serde::Serialize;

#[derive(Clone, Debug, PartialEq, Eq)]
pub enum RequestBody {
    None,
    String(String),
    Json(serde_json::Value),
    Xml(String), // no separate type for XML, so store as string
}
impl Default for RequestBody {
    fn default() -> Self {
        Self::None
    }
}
impl TryFrom<&RequestBody> for String {
    type Error = serde_json::Error;
    fn try_from(value: &RequestBody) -> Result<Self, Self::Error> {
        match value {
            RequestBody::None => Ok("".to_string()),
            RequestBody::String(s) => Ok(s.to_string()),
            RequestBody::Json(json) => serde_json::to_string(&json),
            RequestBody::Xml(s) => Ok(s.to_string()),
        }
    }
}
impl RequestBody {
    pub fn json<T: Serialize>(source: T) -> Result<Self, serde_json::Error> {
        serde_json::to_value(source).map(Self::Json)
    }
    pub fn content_type(&self) -> Option<String> {
        match self {
            Self::None => None,
            Self::String(_) => Some("text/plain".to_string()),
            Self::Json(_) => Some("application/json".to_string()),
            Self::Xml(_) => Some("application/xml".to_string()),
        }
    }
}

#[cfg(test)]
mod tests {

    use assert2::let_assert;
    use pretty_assertions::assert_eq;
    use serde_json::json;

    use super::*;

    #[test_log::test]
    fn test_request_body_json() {
        let_assert!(Ok(json) = RequestBody::json("hello"));
        assert_eq!(
            json,
            RequestBody::Json(serde_json::Value::String("hello".to_string()))
        );
    }

    #[test_log::test]
    fn test_request_body_content_type() {
        assert_eq!(RequestBody::None.content_type(), None);
        assert_eq!(
            RequestBody::String("".to_string()).content_type(),
            Some("text/plain".to_string())
        );
        assert_eq!(
            RequestBody::Json(json!("")).content_type(),
            Some("application/json".to_string())
        );
        assert_eq!(
            RequestBody::Xml("".to_string()).content_type(),
            Some("application/xml".to_string())
        );
    }

    #[test_log::test]
    fn test_request_body_try_from() {
        let_assert!(Ok(value) = String::try_from(&RequestBody::None));
        assert_eq!(value, "");
        let_assert!(Ok(value) = String::try_from(&RequestBody::String("hello".to_string())));
        assert_eq!(value, "hello");
        let_assert!(Ok(value) = String::try_from(&RequestBody::Json(json!("hello"))));
        assert_eq!(value, "\"hello\"");
        let_assert!(Ok(value) = String::try_from(&RequestBody::Xml("hello".to_string())));
        assert_eq!(value, "hello");
    }
}