Wrap parallel routes tests in describe (#40546)

Small changes:
- Group parallel routes tests
- Upgrade tests to latest react experimental

package.json

@@ -178,8 +178,8 @@
     "react-17": "npm:react@17.0.2",
     "react-dom": "18.2.0",
     "react-dom-17": "npm:react-dom@17.0.2",
-    "react-dom-exp": "npm:react-dom@0.0.0-experimental-c739cef2f-20220912",
-    "react-exp": "npm:react@0.0.0-experimental-c739cef2f-20220912",
+    "react-dom-exp": "npm:react-dom@0.0.0-experimental-e6a062bd2-20220913",
+    "react-exp": "npm:react@0.0.0-experimental-e6a062bd2-20220913",
     "react-ssr-prepass": "1.0.8",
     "react-virtualized": "9.22.3",
     "relay-compiler": "13.0.2",

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

@@ -266,23 +266,25 @@ describe('app dir', () => {
       }
     })
 
-    it('should match parallel routes', async () => {
-      const html = await renderViaHTTP(next.url, '/parallel/nested')
-      expect(html).toContain('parallel/layout')
-      expect(html).toContain('parallel/@foo/nested/layout')
-      expect(html).toContain('parallel/@foo/nested/@a/page')
-      expect(html).toContain('parallel/@foo/nested/@b/page')
-      expect(html).toContain('parallel/@bar/nested/layout')
-      expect(html).toContain('parallel/@bar/nested/@a/page')
-      expect(html).toContain('parallel/@bar/nested/@b/page')
-      expect(html).toContain('parallel/nested/page')
-    })
+    describe('parallel routes', () => {
+      it('should match parallel routes', async () => {
+        const html = await renderViaHTTP(next.url, '/parallel/nested')
+        expect(html).toContain('parallel/layout')
+        expect(html).toContain('parallel/@foo/nested/layout')
+        expect(html).toContain('parallel/@foo/nested/@a/page')
+        expect(html).toContain('parallel/@foo/nested/@b/page')
+        expect(html).toContain('parallel/@bar/nested/layout')
+        expect(html).toContain('parallel/@bar/nested/@a/page')
+        expect(html).toContain('parallel/@bar/nested/@b/page')
+        expect(html).toContain('parallel/nested/page')
+      })
 
-    it('should match parallel routes in route groups', async () => {
-      const html = await renderViaHTTP(next.url, '/parallel/nested-2')
-      expect(html).toContain('parallel/layout')
-      expect(html).toContain('parallel/(new)/layout')
-      expect(html).toContain('parallel/(new)/@baz/nested/page')
+      it('should match parallel routes in route groups', async () => {
+        const html = await renderViaHTTP(next.url, '/parallel/nested-2')
+        expect(html).toContain('parallel/layout')
+        expect(html).toContain('parallel/(new)/layout')
+        expect(html).toContain('parallel/(new)/@baz/nested/page')
+      })
     })
 
     describe('<Link />', () => {