Add test with nested subrequests

test/integration/middleware/core/pages/interface/[id]/_middleware.js

@@ -0,0 +1,7 @@
+import { NextResponse } from 'next/server'
+
+export function middleware() {
+  const response = NextResponse.next()
+  response.headers.set('x-dynamic-path', 'true')
+  return response
+}

test/integration/middleware/core/pages/interface/_middleware.js

@@ -54,9 +54,7 @@ export async function middleware(request) {
   }
 
   if (url.pathname.endsWith('/root-subrequest')) {
-    return fetch(
-      `http://${request.headers.get('host')}/interface/root-subrequest`
-    )
+    return fetch(url)
   }
 
   return new Response(null, {

test/integration/middleware/core/pages/responses/_middleware.js

@@ -57,11 +57,11 @@ export async function middleware(request, ev) {
     ev.waitUntil(
       (async () => {
         writer.write(encoder.encode('this is a streamed '.repeat(10)))
-        await sleep(2000)
+        await sleep(200)
         writer.write(encoder.encode('after 2 seconds '.repeat(10)))
-        await sleep(2000)
+        await sleep(200)
         writer.write(encoder.encode('after 4 seconds '.repeat(10)))
-        await sleep(2000)
+        await sleep(200)
         writer.close()
       })()
     )

test/integration/middleware/core/test/index.test.js

@@ -447,6 +447,14 @@ function interfaceTests(locale = '') {
     const element = await browser.elementByCss('.title')
     expect(await element.text()).toEqual('Dynamic route')
   })
+
+  it(`${locale} allows subrequests without infinite loops`, async () => {
+    const res = await fetchViaHTTP(
+      context.appPort,
+      `/interface/root-subrequest`
+    )
+    expect(res.headers.get('x-dynamic-path')).toBe('true')
+  })
 }
 
 function getCookieFromResponse(res, cookieName) {