#[macro_use]
extern crate optional_struct;

use serde::Serialize;

#[derive(OptionalStruct, Serialize)]
#[optional_derive(Serialize)]
#[opt_skip_serializing_none]
struct Data {
    #[opt_passthrough]
    #[serde(rename = "new_key")]
    test: Option<String>,
}

#[test]
fn test_serde() {
    let data = OptionalData {
        test: Some("value".into()),
    };

    assert_eq!(
        serde_json::to_string(&data).unwrap(),
        "{\"new_key\":\"value\"}"
    );

    let data = OptionalData { test: None };

    assert_eq!(serde_json::to_string(&data).unwrap(), "{}");
}