[🐛 Bug]: running tests in Safari on GitHub Actions fails #14927
Description
Have you read the Contributing Guidelines on issues?
- I have read the Contributing Guidelines on issues.
WebdriverIO Version
v9.21.0
Node.js Version
v22.17.1
Mode
Standalone Mode
Which capabilities are you using?
{
browserName: 'safari'
platformName: 'osx'
}What happened?
I'm trying run tests with Vitest and its @vitest/browser-webdriverio (https://github.com/vitest-dev/vitest/tree/main/packages/browser-webdriverio) package. For some reason it works as expected when running the code locally on macOS. But it fails on GitHub Actions.
I set up a minimal demo project with a failing CI: https://github.com/chrisguttandin/vitest-webdriverio.
It ultimately fails with the following error:
Failed to execute WebDriver Bidi command "send" as no Bidi session was established. Make sure you enable it by setting "webSocketUrl: true" in your capabilities and verify that your environment and browser supports it.But I do not set the webSocketUrl in the capabilities and I even use 'wdio:enforceWebDriverClassic' to make sure it doesn't use WebDriver Bidi.
What is your expected behavior?
It would expect it to run the tests on GitHub Actions as well as on a MacBook.
How to reproduce the bug.
The example repo can be used to reproduce the bug.
Relevant log output
RUN v4.0.15 /Users/runner/work/vitest-webdriverio/vitest-webdriverio
2025-12-10T09:08:19.632Z INFO webdriver: Initiate new session using the WebDriver protocol
2025-12-10T09:08:20.103Z INFO @wdio/utils: Started SafariDriver in 429ms on port 49184
2025-12-10T09:08:20.117Z INFO webdriver: [POST] http://localhost:49184/session
2025-12-10T09:08:26.293Z INFO webdriver: COMMAND getWindowHandle()
2025-12-10T09:08:26.294Z INFO webdriver: [GET] http://localhost:49184/session/4D4428E7-BF5D-45BB-BF23-2F0EA56D6CB6/window
2025-12-10T09:08:26.891Z INFO webdriver: RESULT page-956C6AE8-86C1-443D-8273-7945B2585DA0
2025-12-10T09:08:26.892Z INFO webdriver: COMMAND navigateTo("http://127.0.0.1:63315/__vitest_test__/?sessionId=92838a22-ea27-4ada-8506-cbb1681e469b")
2025-12-10T09:08:26.892Z INFO webdriver: [POST] http://localhost:49184/session/4D4428E7-BF5D-45BB-BF23-2F0EA56D6CB6/url
2025-12-10T09:08:26.892Z INFO webdriver: DATA {"url":"http://127.0.0.1:63315/__vitest_test__/?sessionId=92838a22-ea27-4ada-8506-cbb1681e469b"}
2025-12-10T09:08:28.638Z INFO webdriver: RESULT null
2025-12-10T09:08:28.640Z INFO webdriver: COMMAND getWindowHandle()
2025-12-10T09:08:28.640Z INFO webdriver: [GET] http://localhost:49184/session/4D4428E7-BF5D-45BB-BF23-2F0EA56D6CB6/window
2025-12-10T09:08:28.758Z INFO webdriver: RESULT page-956C6AE8-86C1-443D-8273-7945B2585DA0
⎯⎯⎯⎯⎯⎯ Unhandled Errors ⎯⎯⎯⎯⎯⎯
Vitest caught 1 unhandled error during the test run.
This might cause false positive tests. Resolve unhandled errors to make sure your tests are not affected.
Test Files (1)
Tests no tests
⎯⎯⎯⎯⎯⎯ Unhandled Error ⎯⎯⎯⎯⎯⎯⎯
Errors 1 error
Error: Failed to run the test /Users/runner/work/vitest-webdriverio/vitest-webdriverio/index.spec.ts.
Start at 09:08:19
❯ node_modules/vitest/dist/chunks/cli-api.C7sYjHmQ.js:7237:17
Duration 11.71s (transform 0ms, setup 0ms, import 0ms, tests 0ms, environment 0ms)
❯ processTicksAndRejections node:internal/process/task_queues:105:5
2025-12-10T09:08:31.330Z INFO webdriver: COMMAND deleteSession()
Caused by: Error: Failed to execute WebDriver Bidi command "send" as no Bidi session was established. Make sure you enable it by setting "webSocketUrl: true" in your capabilities and verify that your environment and browser supports it.
2025-12-10T09:08:31.331Z INFO webdriver: [DELETE] http://localhost:49184/session/4D4428E7-BF5D-45BB-BF23-2F0EA56D6CB6
❯ Browser.protocolCommand node_modules/webdriver/build/node.js:1341:13
2025-12-10T09:08:31.399Z INFO webdriver: RESULT null
❯ Browser.wrapCommandFn node_modules/@wdio/utils/build/index.js:982:32
2025-12-10T09:08:31.399Z INFO webdriver: Kill driver process with PID 1317
❯ Browser.<anonymous> node_modules/@wdio/utils/build/index.js:1097:20
❯ WebdriverBrowserProvider.setViewport node_modules/@vitest/browser-webdriverio/dist/index.js:463:22
❯ Object.viewport [as __vitest_viewport] node_modules/@vitest/browser-webdriverio/dist/index.js:367:25
❯ ProjectBrowser.triggerCommand node_modules/@vitest/browser/dist/index.js:2440:30
❯ Proxy.triggerCommand node_modules/@vitest/browser/dist/index.js:3109:34
❯ WebSocket.onMessage node_modules/@vitest/browser/dist/index.js:2839:29
❯ processTicksAndRejections node:internal/process/task_queues:105:5
⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯
Error: Process completed with exit code 1.Code of Conduct
- I agree to follow this project's Code of Conduct
Is there an existing issue for this?
- I have searched the existing issues