feat(import): resolve references and schema composition

crates/crank-adapter-rest/tests/integration/outbound_security.rs

@@ -6,6 +6,7 @@ use std::{
         Arc,
         atomic::{AtomicUsize, Ordering},
     },
+    time::Duration,
 };
 
 use axum::{
@@ -14,7 +15,9 @@ use axum::{
     http::StatusCode,
     routing::{any, post},
 };
-use crank_adapter_rest::{OutboundHttpPolicy, RestAdapter, RestAdapterError, RestRequest};
+use crank_adapter_rest::{
+    ExternalReferenceFetcher, OutboundHttpPolicy, RestAdapter, RestAdapterError, RestRequest,
+};
 use crank_core::{HttpMethod, ProtocolAdapterError, RestTarget};
 use serde_json::{Value, json};
 use tokio::net::TcpListener;
@@ -94,7 +97,7 @@ async fn proxy_environment_is_ignored_by_default() {
         let adapter = RestAdapter::default();
         let request = json_request(json!({"payload": "proxy-env-canary"}));
         let rest_target = RestTarget {
-            base_url: target,
+            base_url: target.clone(),
             method: HttpMethod::Post,
             path_template: "/capture".to_owned(),
             static_headers: BTreeMap::new(),
@@ -102,6 +105,17 @@ async fn proxy_environment_is_ignored_by_default() {
         let _ = adapter.execute(&rest_target, &request).await.expect_err(
             "unresolvable target should fail locally instead of being sent through proxy env",
         );
+        let fetcher = ExternalReferenceFetcher::try_new(
+            OutboundHttpPolicy::default(),
+            vec!["http://public.example.test/".to_owned()],
+            1024,
+            Duration::from_secs(1),
+        )
+        .expect("valid external reference fetcher");
+        let _ = fetcher
+            .get(&target)
+            .await
+            .expect_err("external reference fetcher must not use proxy environment variables");
         return;
     }