use async_graphql::*;

#[tokio::test]
pub async fn test_derived_field() {
    use serde::{Deserialize, Serialize};

    struct Query;

    #[derive(Serialize, Deserialize)]
    struct ValueDerived(String);

    scalar!(ValueDerived);

    impl From<i32> for ValueDerived {
        fn from(value: i32) -> Self {
            ValueDerived(format!("{}", value))
        }
    }

    #[Object]
    impl Query {
        #[graphql(derived(name = "value2", into = "ValueDerived"))]
        async fn value1(&self, #[graphql(default = 100)] input: i32) -> i32 {
            input
        }
    }

    let query = "{ value1 value2 }";
    let schema = Schema::new(Query, EmptyMutation, EmptySubscription);
    assert_eq!(
        schema.execute(query).await.data,
        value!({
            "value1": 100,
            "value2": "100",
        })
    );

    let query = "{ value1(input: 1) value2(input: 2) }";
    let schema = Schema::new(Query, EmptyMutation, EmptySubscription);
    assert_eq!(
        schema.execute(query).await.data,
        value!({
            "value1": 1,
            "value2": "2",
        })
    );
}