Cypress hanging on circleCI but pass locally

[goldylucks]

Current behavior

we have a test the works 100% locally, but on circle CI with docker it sometimes pass, sometimes hang forever.

Attaching here a txt file with the output of running cypress with DEBUG, after 2.5 hours we let the test run on the CI

I'd appreciate any insights to help tackle this, and do let me know if there's anything I can do on our end to make it easier for you to know what's going on.

cypress circle ci hang.txt

Desired behavior

should work on the CI like it works locally.

Test code to reproduce

I don't know how to reproduce this, it happens on one of our test suits but not the same test every time, i.e. it's a describe block with many its, and sometimes the first one hangs, someone the first one pass and the second one hangs.

Cypress Version

9.5.2

Other

No response

[CaiqueCoelho]

Hey @goldylucks I had the same problem some weeks ago and in my case was two problems:

1. Locally my tests were running in Chrome, but on the CI they were running in Electron
2. I don't know why, but on CI same Cypress configuration params were ignored

So I fix my problem by passing the Browser and some Cypress configuration directly in my npm script command like:
"test:chrome": "cypress run --config pageLoadTimeout=60000,retries=3,defaultCommandTimeout=4000 --browser chrome"

[goldylucks]

the problem is cypress hangs, not only fails. And it's just on one test suite, so it's not a config issue IMO.

Also, we also do npx run cypress --browser chrome

[nezlobnaya]

I am having a somewhat similar issue. MY CYPRESS tests pass locally but are hanging on circleCI. I am getting this error:
Too long with no output (exceeded 10m0s): context deadline exceeded

[nezlobnaya]

Tests started to hang after --env USERNAME=$USERNAME, PASSWORD=$PASSWORD flag was added to CMD in Dockerfile

[nezlobnaya]

So, in my case adding --browser chrome flag was a game changer. Obviously using the default Electron is not the best option to run Cypress in a container on circleCI

[TarekAlQaddy]

@nezlobnaya That was a game changer for me too. using --browser chrome brought the tests from 20m down to 2m only! Thanks

[ParadoxTwo]

I updated the config to use chrome but that didn't stop the hangs. Now trying the latest orb with chrome.

[AakrritiJain]

Using --browser chrome to run the tests, still hanging on circleci but passing on my local. Any solution?

[emilyrohrbough]

@goldylucks In the logs you provided, can you share which debug log you enabled? Also, is this a log set from a job you had to manually end in CI after several minutes/hours of this being non-responsive?

@goldylucks / @AakrritiJain / @ParadoxTwo Can you provide debug logs with DEBUG=cypress-verbose:server:browsers enabled? This might give additional browser log insights to take a peak at what is happening. Based on what you are describing, I suspect you are experiencing a browser hang.

[hyungjunk]

For me, I added experimentalModifyObstructiveThirdPartyCode: true to config and the hanigng goes away.

[mjhenkes]

Right now there doesn't seem to be enough information to reproduce the problem on our end. Unless we receive a reliable reproduction, we'll eventually have to close this issue until we can reproduce it. This does not mean that your issue is not happening - it just means that we do not have a path to move forward.

Please provide a reproducible example of the issue you're encountering. Here are some tips for providing a Short, Self Contained, Correct, Example and our own Troubleshooting Cypress guide.