Port cannot be set for Playwright

[joeinnes]

Describe the bug

I don't seem to be able to change the port that Playwright runs on.

Modifying this value doesn't seem to help:

kit/packages/create-svelte/shared/+playwright-typescript/playwright.config.js

Line 5 in 143d17f

port: 3000

I also tried updating the previous line to npm run build && npm run preview --port 3005, and PORT=3005 npm run build && npm run preview, with no joy.

This is frustrating because I can't run npm run test while my dev server is running.

Reproduction

Install SvelteKit with Playwright.
Run npm run dev
Run npm run test

Watch it fail with an error:
[WebServer] Port 3000 is occupied

Logs

No response

System Info

System:
    OS: Linux 5.16 Pop!_OS 21.10
    CPU: (4) x64 Intel(R) Core(TM) i5-4278U CPU @ 2.60GHz
    Memory: 2.02 GB / 7.68 GB
    Container: Yes
    Shell: 5.1.8 - /bin/bash
  Binaries:
    Node: 17.4.0 - ~/.n/bin/node
    npm: 8.5.1 - ~/.n/bin/npm
  Browsers:
    Brave Browser: beta
    Firefox: 99.0
  npmPackages:
    @sveltejs/adapter-auto: next => 1.0.0-next.40 
    @sveltejs/kit: next => 1.0.0-next.324 
    svelte: ^3.44.0 => 3.47.0

Severity

annoyance

Additional Information

No response

[bluwy]

You need another -- for npm run preview:

npm run build && npm run preview -- --port 3005

then change to port: 3005.

If you want to use the dev server for testing, you can set webServer.reuseExistingServer: true too. https://playwright.dev/docs/test-advanced#launching-a-development-web-server-during-the-tests

[NatoBoram]

If anyone is confused about this answer, it's in playwright.config.ts:

import type { PlaywrightTestConfig } from '@playwright/test';

const config: PlaywrightTestConfig = {
	webServer: {
		command: 'pnpm run build && pnpm run preview --port 3002',
		port: 3002
	}
};

export default config;

Both pnpm run preview --port 3002 and port: 3002 need to be changed so they can see each other.

(Only npm needs an additional -- to run options like --port.)

• Changing the preview port in svelte.config.js doesn't work #5097
• Upgrade to Vite 3 #5005