The "setup" in the tests is very slow for every rerun

[enkot]

Environment

• Operating System: Linux
• Node Version: v16.14.2
• Nuxt Version: 3.0.0-rc.12
• Nitro Version: 0.6.0
• Package Manager: npm@7.17.0
• Builder: vite
• User Config: -
• Runtime Modules: -
• Build Modules: -

Reproduction

https://stackblitz.com/edit/nuxt-framework-zehqm6

Describe the bug

The empty await setup({}) in the tests takes ~4 seconds for every rerun in watch mode in the empty project.
Please, check the reproduction, try to run npm test.

Additional context

No response

Logs

No response

[danielroe]

I think @antfu was working on a PR to avoid restarting/rebuilding Nuxt when rerunning tests.

Also relevant: nuxt/framework#4578.

[fabis94]

Besides not re-building on every test (re-)run it would be even better if server could be re-built separately if only server-side code changed (e.g. an API) 🙃

[fabis94]

In either case, eagerly awaiting for a change here, cause otherwise running tests is pretty painful atm

[KarelVendla]

@danielroe Is it possible to have a dev. instance running & to use that as the "server" for the e2e tests? I don't really care about building all the time as the built version will run in the pipeline anyway . It would be nice to skip "building" and just to use the "npm run dev" server I have running.

[nWacky]

Is it possible to have a dev. instance running & to use that as the "server" for the e2e tests?

I managed to avoid rebuilding every time by building into .output/output

npm run build
mv .output .output1 && mkdir .output && mv .output1 .output/output

And then setting output directory to .output

// playwright.config.ts
export default defineConfig<ConfigOptions>({
  use: {
    nuxt: {
      build: false,
      buildDir: ".output",
      rootDir: fileURLToPath(new URL(".", import.meta.url)),
    },
  },
})

For now nuxt always sets nitro.output.dir to buildDir/output and starts a server from buildDir/output

npx playwright test is using an existing build after this

[linspw]

You are amazing @nWacky !
I only adjusted to doesn't need mv command:

export default defineConfig<ConfigOptions>({
  use: {
    nuxt: {
      build: false,
      buildDir: '.output',
      nuxtConfig: {
        nitro: {
          output: {
            dir: '.output',
          },
        },
      },
      rootDir: fileURLToPath(new URL('.', import.meta.url)),
    },
})

[linspw]

Wrapping nuxt setup:
Be Happy

OBS: The test now takes 5 seconds, previously it took around 50 seconds

import { setup } from '@nuxt/test-utils/e2e'
import type { TestOptions } from '@nuxt/test-utils/e2e'

export const setupNuxt = (options?: Partial<TestOptions>) => {
  return setup({
    build: false,
    buildDir: '.output',
    nuxtConfig: {
      nitro: {
        output: {
          dir: '.output',
        },
      },
    },
    ...options
  })
}