100 lines
2.3 KiB
Rust
100 lines
2.3 KiB
Rust
use std::borrow::Cow;
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use crate::{registry, ContextSelectionSet, OutputType, Positioned, ServerResult, Type, Value};
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use async_graphql_parser::types::Field;
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impl<'a, T> Type for Cow<'a, T>
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where
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T: Type + ToOwned + ?Sized + Send + Sync,
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{
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fn type_name() -> Cow<'static, str> {
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T::type_name()
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}
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fn create_type_info(registry: &mut registry::Registry) -> String {
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<T as Type>::create_type_info(registry)
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}
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}
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#[async_trait::async_trait]
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impl<'a, T> OutputType for Cow<'a, T>
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where
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T: OutputType + ToOwned + ?Sized + Send + Sync,
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<T as ToOwned>::Owned: Send + Sync,
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{
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async fn resolve(
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&self,
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ctx: &ContextSelectionSet<'_>,
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field: &Positioned<Field>,
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) -> ServerResult<Value> {
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self.as_ref().resolve(ctx, field).await
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}
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}
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#[cfg(test)]
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mod test {
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use crate::*;
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use std::borrow::Cow;
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#[async_std::test]
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async fn test_cow_type() {
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struct Query11 {
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obj: MyObj,
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}
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#[derive(SimpleObject, Clone)]
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#[graphql(internal)]
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struct MyObj {
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a: i32,
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b: i32,
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}
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#[Object(internal)]
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impl Query11 {
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async fn value1(&self) -> Cow<'_, str> {
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Cow::Borrowed("abc")
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}
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async fn value2(&self) -> Cow<'_, str> {
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Cow::Owned("def".to_string())
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}
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async fn obj1(&self) -> Cow<'_, MyObj> {
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Cow::Borrowed(&self.obj)
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}
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async fn obj2(&self) -> Cow<'_, MyObj> {
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Cow::Owned(MyObj { a: 300, b: 400 })
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}
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}
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let query = r#"{
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value1
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value2
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obj1 {
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a b
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}
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obj2 {
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a b
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}
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}"#;
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let schema = Schema::new(
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Query11 {
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obj: MyObj { a: 100, b: 200 },
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},
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EmptyMutation,
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EmptySubscription,
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);
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assert_eq!(
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schema.execute(query).await.into_result().unwrap().data,
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value!({
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"value1": "abc",
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"value2": "def",
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"obj1": {"a": 100, "b": 200},
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"obj2": {"a": 300, "b": 400},
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})
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);
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}
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}
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