future_form 0.3.1

Abstractions over Send and !Send futures
Documentation 
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use super::*;

trait MethodGeneric<K: FutureForm> {
    fn convert<U: ToString + Send + 'static>(&self, u: U) -> K::Future<'_, String>;
}

struct MethodGenericType<K> {
    prefix: String,
    _marker: PhantomData<K>,
}

#[future_form(Sendable, Local)]
impl<K: FutureForm> MethodGeneric<K> for MethodGenericType<K> {
    fn convert<U: ToString + Send + 'static>(&self, u: U) -> K::Future<'_, String> {
        let prefix = self.prefix.clone();
        K::from_future(async move { format!("{}{}", prefix, u.to_string()) })
    }
}

#[tokio::test]
async fn test_method_generic_sendable() {
    let t: MethodGenericType<Sendable> = MethodGenericType {
        prefix: "value: ".to_string(),
        _marker: PhantomData,
    };
    let result = <MethodGenericType<Sendable> as MethodGeneric<Sendable>>::convert(&t, 42i32).await;
    assert_eq!(result, "value: 42");
}

#[tokio::test]
async fn test_method_generic_local() {
    let t: MethodGenericType<Local> = MethodGenericType {
        prefix: "value: ".to_string(),
        _marker: PhantomData,
    };
    let result = <MethodGenericType<Local> as MethodGeneric<Local>>::convert(&t, 42i32).await;
    assert_eq!(result, "value: 42");
}