Wait for res close in tests

Author: Luca Forstner

dev-packages/e2e-tests/test-applications/nextjs-14/app/request-instrumentation/page.tsx

@@ -5,8 +5,8 @@ export const dynamic = 'force-dynamic';
 export default async function Page() {
   await fetch('http://example.com/', { cache: 'no-cache' });
   await new Promise<void>(resolve => {
-    http.get('http://example.com/', () => {
-      resolve();
+    http.get('http://example.com/', res => {
+      res.on('close', resolve);
     });
   });
   return <p>Hello World!</p>;

packages/nextjs/test/integration/pages/api/http/index.ts

@@ -3,7 +3,11 @@ import { NextApiRequest, NextApiResponse } from 'next';
 
 const handler = async (_req: NextApiRequest, res: NextApiResponse): Promise<void> => {
   // make an outgoing request in order to test that the `Http` integration creates a span
-  await new Promise(resolve => get('http://example.com', resolve));
+  await new Promise(resolve =>
+    get('http://example.com', res => {
+      res.on('close', resolve);
+    }),
+  );
 
   res.status(200).json({});
 };