async-graphql/tests/derived_field.rs

48 lines
1.1 KiB
Rust

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",
})
);
}