fix: mock image path as next/image expects it

packages/next/build/jest/__mocks__/fileMock.js

@@ -1 +1 @@
-module.exports = 'test-file-stub'
+module.exports = '/test-file-stub'

test/production/next/jest/index.test.ts

@@ -8,13 +8,23 @@ describe('next/jest', () => {
   beforeAll(async () => {
     next = await createNext({
       files: {
+        'public/vercel.svg':
+          '<svg width="24" height="24" xmlns="http://www.w3.org/2000/svg"/>',
+        'components/image.js': `
+          import Image from "next/image"
+          import img from "../public/vercel.svg"
+          export function Img() {
+            return <Image src={img} alt="logo" width={24} height={24} />
+          }
+        `,
         'components/comp.js': `
           export default function Comp() {
             return <h1>Hello Dynamic</h1>;
           }
         `,
         'pages/index.js': `
           import dynamic from "next/dynamic";
+          import { Img } from "../components/image";
 
           const Comp = dynamic(() => import("../components/comp"), {
             loading: () => <h1>Loading...</h1>,
@@ -23,6 +33,7 @@ describe('next/jest', () => {
           export default function Page() { 
             return <>
               <Comp />
+              <Img/>
               <p>hello world</p>
             </>
           }