first commit

test/integration/render-error-on-module-error/pages/_error.js

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+export default function Error() {
+  return <p id="error-p">Error Rendered</p>
+}

test/integration/render-error-on-module-error/pages/index.js

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+if (typeof window !== 'undefined') {
+  throw new Error('fail module evaluation')
+}
+
+const Index = () => 'hi'
+
+Index.getInitialProps = () => ({})
+
+export default Index

test/integration/render-error-on-module-error/test/index.test.ts

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+/* eslint-env jest */
+
+import {
+  nextBuild,
+  nextServer,
+  startApp,
+  stopApp,
+  waitFor,
+} from 'next-test-utils'
+import webdriver from 'next-webdriver'
+import { join } from 'path'
+
+const appDir = join(__dirname, '..')
+
+let appPort
+let app
+let server
+
+describe('Module Init Error', () => {
+  ;(process.env.TURBOPACK_DEV ? describe.skip : describe)(
+    'production mode',
+    () => {
+      beforeAll(async () => {
+        await nextBuild(appDir)
+        app = nextServer({
+          dir: join(__dirname, '../'),
+          dev: false,
+          quiet: true,
+        })
+
+        server = await startApp(app)
+        appPort = server.address().port
+      })
+      afterAll(() => stopApp(server))
+
+      it('should render error page', async () => {
+        const browser = await webdriver(appPort, '/')
+        try {
+          await waitFor(2000)
+          const text = await browser.elementByCss('#error-p').text()
+          expect(text).toBe('Error Rendered')
+        } finally {
+          await browser.close()
+        }
+      })
+    }
+  )
+})