added a test to edge-runtime-streaming-error(unhandled rejecting)

test/integration/edge-runtime-streaming-error/pages/api/test.js

@@ -0,0 +1,14 @@
+export const config = {
+  runtime: 'experimental-edge',
+}
+export default function () {
+  return new Response(
+    new ReadableStream({
+      start(ctr) {
+        ctr.enqueue(new TextEncoder().encode('hello'))
+        ctr.enqueue(true)
+        ctr.close()
+      },
+    })
+  )
+}

test/integration/edge-runtime-streaming-error/test/index.test.ts

@@ -0,0 +1,81 @@
+import stripAnsi from 'next/dist/compiled/strip-ansi'
+import {
+  fetchViaHTTP,
+  findPort,
+  killApp,
+  launchApp,
+  nextBuild,
+  nextStart,
+  waitFor,
+} from 'next-test-utils'
+import path from 'path'
+import { remove } from 'fs-extra'
+
+const appDir = path.join(__dirname, '..')
+
+function test(context: ReturnType<typeof createContext>) {
+  return async () => {
+    const res = await fetchViaHTTP(context.appPort, '/api/test')
+    expect(await res.text()).toEqual('hello')
+    expect(res.status).toBe(200)
+    await waitFor(200)
+    const santizedOutput = stripAnsi(context.output)
+    expect(santizedOutput).toMatch(
+      new RegExp(`TypeError: This ReadableStream did not return bytes.`, 'm')
+    )
+    expect(santizedOutput).not.toContain('webpack-internal:')
+  }
+}
+
+function createContext() {
+  const ctx = {
+    output: '',
+    appPort: -1,
+    app: undefined,
+    handler: {
+      onStdout(msg) {
+        this.output += msg
+      },
+      onStderr(msg) {
+        this.output += msg
+      },
+    },
+  }
+  ctx.handler.onStderr = ctx.handler.onStderr.bind(ctx)
+  ctx.handler.onStdout = ctx.handler.onStdout.bind(ctx)
+  return ctx
+}
+
+describe('dev mode', () => {
+  const context = createContext()
+
+  beforeAll(async () => {
+    context.appPort = await findPort()
+    context.app = await launchApp(appDir, context.appPort, {
+      ...context.handler,
+      env: { __NEXT_TEST_WITH_DEVTOOL: 1 },
+    })
+  })
+
+  afterAll(() => killApp(context.app))
+
+  it('logs the error correctly', test(context))
+})
+
+describe('production mode', () => {
+  const context = createContext()
+
+  beforeAll(async () => {
+    await remove(path.join(appDir, '.next'))
+    await nextBuild(appDir, undefined, {
+      stderr: true,
+      stdout: true,
+    })
+    context.appPort = await findPort()
+    context.app = await nextStart(appDir, context.appPort, {
+      ...context.handler,
+    })
+  })
+  afterAll(() => killApp(context.app))
+  it('logs the error correctly', test(context))
+})