90 lines
1.6 KiB
Rust
90 lines
1.6 KiB
Rust
#![allow(unreachable_code)]
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use async_graphql::*;
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struct User {
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id: ID,
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}
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#[Object(extends)]
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impl User {
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#[graphql(external)]
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async fn id(&self) -> &ID {
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&self.id
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}
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async fn reviews(&self) -> Vec<Review> {
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todo!()
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}
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}
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struct Review;
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#[Object]
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impl Review {
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async fn body(&self) -> String {
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todo!()
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}
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#[graphql(provides = "username")]
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async fn author(&self) -> User {
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todo!()
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}
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async fn product(&self) -> Product {
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todo!()
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}
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}
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struct Product {
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upc: String,
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}
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#[Object(extends)]
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impl Product {
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#[graphql(external)]
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async fn upc(&self) -> &str {
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&self.upc
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}
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async fn reviews(&self) -> Vec<Review> {
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todo!()
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}
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}
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struct QueryRoot;
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#[Object]
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impl QueryRoot {
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#[graphql(entity)]
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async fn find_user_by_id(&self, id: ID) -> User {
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User { id }
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}
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#[graphql(entity)]
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async fn find_product_by_upc(&self, upc: String) -> Product {
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Product { upc }
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}
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}
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#[async_std::test]
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pub async fn test_federation() {
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let schema = Schema::new(QueryRoot, EmptyMutation, EmptySubscription);
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let query = r#"{
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_entities(representations: [{__typename: "Product", upc: "B00005N5PF"}]) {
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__typename
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... on Product {
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upc
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}
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}
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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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serde_json::json!({
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"_entities": [
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{"__typename": "Product", "upc": "B00005N5PF"},
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]
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})
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);
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}
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