serde_magnus 0.2.0

Serde integration for Magnus
Documentation 
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use magnus::{eval, Error, Integer, RArray, RHash, Value};
use serde::Serialize;
use serde_magnus::serialize;

#[derive(Serialize)]
struct A;

#[derive(Serialize)]
struct B(u64);

#[derive(Serialize)]
struct C(u64, bool, String);

#[derive(Serialize)]
struct D {
    message: String,
}

#[test]
fn test_serializing_structs() -> Result<(), Error> {
    let _cleanup = unsafe { magnus::embed::init() };

    let output: Value = serialize(&A)?;
    assert!(output.is_nil());

    let input = B(123);
    let output: Integer = serialize(&input)?;
    assert_eq!(123, output.to_u64()?);

    let input = C(1234, true, "Hello, world!".into());
    let output: RArray = serialize(&input)?;
    assert!(eval!("output == [ 1234, true, 'Hello, world!' ]", output)?);

    let input = D {
        message: "Hello, world!".into(),
    };
    let output: RHash = serialize(&input)?;
    assert!(eval!("output == { message: 'Hello, world!' }", output)?);

    Ok(())
}