Add test for next-found and redirect for metadata (#46248)

Add tests for using `redirect` and `notFound` in `generateMetadata`

test/e2e/app-dir/metadata/app/async/layout.tsx

@@ -7,3 +7,5 @@ export async function generateMetadata() {
     keywords: 'parent',
   }
 }
+
+export const revalidate = 0

test/e2e/app-dir/metadata/app/async/not-found/page.tsx

@@ -1,7 +1,7 @@
 import { notFound } from 'next/navigation'
 
 export default function page() {
-  return 'not found'
+  return 'not-found-text'
 }
 
 export async function generateMetadata() {

test/e2e/app-dir/metadata/app/async/redirect/page.tsx

@@ -0,0 +1,9 @@
+import { redirect } from 'next/navigation'
+
+export default function page() {
+  return 'redirect to basic'
+}
+
+export async function generateMetadata() {
+  redirect('/basic')
+}

test/e2e/app-dir/metadata/metadata.test.ts

@@ -330,6 +330,17 @@ createNextDescribe(
         )
       })
 
+      it('should support notFound and redirect in generateMetadata', async () => {
+        const resNotFound = await next.fetch('/async/not-found')
+        expect(resNotFound.status).toBe(404)
+        const notFoundHtml = await resNotFound.text()
+        expect(notFoundHtml).not.toBe('not-found-text')
+        expect(notFoundHtml).toContain('This page could not be found.')
+
+        const resRedirect = await next.fetch('/async/redirect')
+        expect(resRedirect.status).toBe(307)
+      })
+
       if (isNextDev) {
         it('should freeze parent resolved metadata to avoid mutating in generateMetadata', async () => {
           const pagePath = 'app/mutate/page.tsx'

test/e2e/app-dir/navigation/app/layout.js

@@ -1,4 +1,4 @@
-export const revalidate = 0
+export const dynamic = 'force-dynamic'
 
 export default function Layout({ children }) {
   return (