Add test code for generic object. #274

tests/generic_types.rs

@@ -0,0 +1,49 @@
+use async_graphql::*;
+
+#[async_std::test]
+pub async fn test_generic_object() {
+    struct MyObj<T> {
+        value: T,
+    }
+
+    #[Object(name = "MyObjI32")]
+    impl MyObj<i32> {
+        async fn value(&self) -> i32 {
+            self.value
+        }
+    }
+
+    #[Object(name = "MyObjBool")]
+    impl MyObj<bool> {
+        async fn value(&self) -> bool {
+            self.value
+        }
+    }
+
+    struct Query;
+
+    #[Object]
+    impl Query {
+        async fn obj_i32(&self) -> MyObj<i32> {
+            MyObj { value: 100 }
+        }
+
+        async fn obj_bool(&self) -> MyObj<bool> {
+            MyObj { value: true }
+        }
+    }
+
+    let schema = Schema::new(Query, EmptyMutation, EmptySubscription);
+    let query = r#"{
+            objI32 { value }
+            objBool { value }
+        }"#
+    .to_owned();
+    assert_eq!(
+        schema.execute(&query).await.into_result().unwrap().data,
+        serde_json::json!({
+            "objI32": {"value": 100},
+            "objBool": {"value": true},
+        })
+    );
+}